Merge branch 'master' into feature/gh_actions

19 files changed, 818 insertions, 81 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f4867fb..d7030fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,33 @@
 # Changelog
 
+## Version 0.8.6
+
+* Rename default configuration file
+
+## Version 0.8.5
+
+* Handle the case where the configuration file doesn't contain all sections.
+
+## Version 0.8.4
+
+* Add support for using a configuration file to avoid having to use command 
+  line flags.
+
+## Version 0.8.3
+
+* Add support for providing custom styling for HTML output (closes 
+  [#82](https://github.com/GjjvdBurg/paper2remarkable/issues/82)).
+
+## Version 0.8.2
+
+* Add provider for ScienceDirect
+* Add man page to package
+* Add short flag, -f, for --filename
+
+## Version 0.8.1
+
+* Add experimental fix for lazy loaded images in HTML
+
 ## Version 0.8.0
 
 * Add provider for Nature
diff --git a/MANIFEST.in b/MANIFEST.in
index 1de226b..038a56f 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,7 +1,10 @@
 include README.md
+include p2r.1
 recursive-include tests *.py
 exclude Makefile
 exclude .gitignore
 exclude Dockerfile
 exclude make_release.py
+exclude pyproject.toml
 prune old
+prune tests
diff --git a/Makefile b/Makefile
index bcbc420..6a4a460 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ PACKAGE=paper2remarkable
 DOC_DIR='./docs/'
 VENV_DIR=/tmp/p2r_venv/
 
-.PHONY: help dist venv
+.PHONY: help dist venv docs
 
 .DEFAULT_GOAL := help
 
@@ -35,22 +35,15 @@ clean: ## Clean build dist and egg directories left after install
 	rm -rf ./$(PACKAGE).egg-info
 	rm -rf $(VENV_DIR)
 	rm -f MANIFEST
+	rm -f ./p2r.1
 	find . -type f -iname '*.pyc' -delete
 	find . -type d -name '__pycache__' -empty -delete
 
-dist: ## Make Python source distribution
+dist: docs ## Make Python source distribution
 	python setup.py sdist bdist_wheel
 
-docs: doc
-doc: install ## Build documentation with Sphinx
-	source $(VENV_DIR)/bin/activate && m2r README.md && mv README.rst $(DOC_DIR)
-	source $(VENV_DIR)/bin/activate && m2r CHANGELOG.md && mv CHANGELOG.rst $(DOC_DIR)
-	cd $(DOC_DIR) && \
-		rm source/* && \
-		source $(VENV_DIR)/bin/activate && \
-		sphinx-apidoc -H 'Paper2Remarkable API Documentation' -o source ../$(PACKAGE) && \
-		touch source/AUTOGENERATED
-	$(MAKE) -C $(DOC_DIR) html
+docs:
+	$(MAKE) -C $(DOC_DIR) clean && $(MAKE) -C $(DOC_DIR) man
 
 venv: $(VENV_DIR)/bin/activate
 
diff --git a/README.md b/README.md
index 70efbf2..d212549 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ reMarkable from any of the following sources:
 * [PMLR](http://proceedings.mlr.press/)
 * [PubMed Central](https://www.ncbi.nlm.nih.gov/pmc/)
 * [SagePub](https://journals.sagepub.com/)
+* [ScienceDirect](https://www.sciencedirect.com/)
 * [SemanticScholar](https://www.semanticscholar.org/)
 * [SpringerLink](https://link.springer.com/)
 * [Taylor & Francis](https://www.tandfonline.com/)
@@ -148,40 +149,71 @@ Github][github-url].
 ## Usage
 
 The full help of the script is as follows. Hopefully the various command line 
-flags are self-explanatory, but if you'd like more information, please open an 
-issue [on GitHub][github-url].
+flags are self-explanatory, but if you'd like more information see the [man 
+page](docs/man.md) (``man p2r``) or open an issue [on GitHub][github-url].
 
 ```
-usage: p2r [-h] [-b] [-c] [-d] [-n] [-p REMARKABLE_DIR] [-r] [-k] [-v] [-V]
-           [--filename FILENAME] [--gs GS] [--pdftoppm PDFTOPPM] [--pdftk PDFTK]
-           [--qpdf QPDF] [--rmapi RMAPI]
+usage: p2r [-h] [-b] [-c] [-d] [-e] [-n] [-p REMARKABLE_DIR] [-r] [-k] [-v]
+           [-V] [-f FILENAME] [--gs GS] [--pdftoppm PDFTOPPM] [--pdftk PDFTK]
+           [--qpdf QPDF] [--rmapi RMAPI] [--css CSS] [--font-urls FONT_URLS]
+           [-C CONFIG]
            input [input ...]
 
-Paper2reMarkable version 0.7.3
+Paper2reMarkable version 0.8.6
 
 positional arguments:
-  input                 One or more URLs to a paper or paths to local PDF files
+  input                 One or more URLs to a paper or paths to local PDF
+                        files
 
 optional arguments:
   -h, --help            show this help message and exit
   -b, --blank           Add a blank page after every page of the PDF
   -c, --center          Center the PDF on the page, instead of left align
   -d, --debug           debug mode, doesn't upload to reMarkable
-  -n, --no-upload       don't upload to the reMarkable, save the output in current working dir
+  -e, --experimental    enable experimental features
+  -n, --no-upload       don't upload to reMarkable, save the output in current
+                        directory
   -p REMARKABLE_DIR, --remarkable-path REMARKABLE_DIR
-                        directory on reMarkable to put the file (created if missing, default: /)
+                        directory on reMarkable to put the file (created if
+                        missing, default: /)
   -r, --right           Right align so the menu doesn't cover it
   -k, --no-crop         Don't crop the pdf file
   -v, --verbose         be verbose
   -V, --version         Show version and exit
-  --filename FILENAME   Filename to use for the file on reMarkable
+  -f FILENAME, --filename FILENAME
+                        Filename to use for the file on reMarkable
   --gs GS               path to gs executable (default: gs)
   --pdftoppm PDFTOPPM   path to pdftoppm executable (default: pdftoppm)
   --pdftk PDFTK         path to pdftk executable (default: pdftk)
   --qpdf QPDF           path to qpdf executable (default: qpdf)
   --rmapi RMAPI         path to rmapi executable (default: rmapi)
+  --css CSS             path to custom CSS file for HTML output
+  --font-urls FONT_URLS
+                        path to custom font urls file for HTML output
+  -C CONFIG, --config CONFIG
+                        path to config file (default: ~/.paper2remarkable.yml)
 ```
 
+By default ``paper2remarkable`` makes a PDF fit better on the reMarkable by 
+changing the page size and removing unnecessary whitespace. Some tools for 
+exporting a PDF with annotations do not handle different page sizes properly, 
+causing annotations to be misplaced (see 
+[discussion](https://github.com/GjjvdBurg/paper2remarkable/issues/77)). If 
+this is an issue for you, you can disable cropping using the 
+``-k``/``--no-crop`` option to ``p2r``.
+
+For HTML sources (i.e. web articles) you can specify custom styling using the 
+``--css`` and ``--font-urls`` options. The default style in the [HTML 
+provider](https://github.com/GjjvdBurg/paper2remarkable/blob/a6e50d07748c842f1f0a09e4b173c87850c6ddee/paper2remarkable/providers/html.py#L36) 
+can serve as a starting point.
+
+A configuration file can be used to provide commonly-used command line 
+options. By default the configuration file at ``~/.paper2remarkable.yml`` is 
+used if it exists, but an alternative location can be provided with the 
+``-C/--config`` flag. Command line flags override the settings in the 
+configuration file.  See the [config.example.yml](./config.example.yml) file 
+for an example configuration file and an overview of supported options.
+
 ## Alfred Workflow
 
 On MacOS, you can optionally install [this Alfred workflow][workflow]. Alfred 
@@ -229,19 +261,31 @@ docker build -t p2r .
 
 ### Authorization
 
-If you already have a `~/.rmapi` file, you can skip this section. Otherwise 
-we'll use `rmapi` to create it.
+``paper2remarkable`` uses [rMapi](https://github.com/juruen/rmapi) to sync 
+documents to the reMarkable. The first time you run ``paper2remarkable`` you 
+will have to authenticate rMapi using a one-time code provided by reMarkable. 
+By default, rMapi uses the ``${HOME}/.rmapi`` file as a configuration file to 
+store the credentials, and so this is the location we will use in the commands 
+below. If you'd like to use a different location for the configuration (for 
+instance, ``${HOME}/.config/rmapi/rmapi.conf``), make sure to change the 
+commands below accordingly.
+
+If you already have a `~/.rmapi` file with the authentication details, you can 
+skip this section. Otherwise we'll create it and run ``rmapi`` in the docker 
+container for authentication:
 
 ```bash
-touch ${HOME}/.rmapi
-docker run --rm -i -t -v "${HOME}/.rmapi:/home/user/.rmapi:rw" --entrypoint=rmapi p2r version
+$ touch ${HOME}/.rmapi
+$ docker run --rm -i -t -v "${HOME}/.rmapi:/home/user/.rmapi:rw" --entrypoint=rmapi p2r version
 ```
 
-which should end with output like
+This command will print a link where you can obtain a one-time code to 
+authenticate rMapi and afterwards print the rMapi version (the version number 
+may be different):
 
 ```bash
 ReMarkable Cloud API Shell
-rmapi version: 0.0.5
+rmapi version: 0.0.12
 ```
 
 ### Usage
@@ -257,7 +301,7 @@ docker run --rm -v "${HOME}/.rmapi:/home/user/.rmapi:rw" p2r --help
 docker run --rm -v "${HOME}/.rmapi:/home/user/.rmapi:rw" p2r -v https://arxiv.org/abs/1811.11242
 
 # to transfer a local file in the current directory
-docker run --rm -v "${HOME}/.rmapi:/home/user/.rmapi:rw" -v "$(pwd):/home/user:r" p2r -v localfile.pdf
+docker run --rm -v "${HOME}/.rmapi:/home/user/.rmapi:rw" -v "$(pwd):/home/user:ro" p2r -v localfile.pdf
 ```
 
 For transferring local files using the Docker image, you may find [this helper 
@@ -273,7 +317,8 @@ your ``~/.bashrc`` file to abstract away the Docker commands:
 alias p2r="docker run --rm -v \"${HOME}/.rmapi:/home/user/.rmapi:rw\" p2r"
 ```
 
-Then you can use ``paper2remarkable`` from the command line as ``p2r``!
+After running ``source ~/.bashrc`` to activate the alias, you can then use 
+``paper2remarkable`` through Docker by calling ``p2r`` from the command line.
 
 # Notes
 
diff --git a/config.example.yml b/config.example.yml
new file mode 100644
index 0000000..52d3ac4
--- /dev/null
+++ b/config.example.yml
@@ -0,0 +1,26 @@
+---
+core:
+  crop: 'left'          # options: 'none', 'left', 'center', 'right'
+  blank: false          # options: true, false
+  upload: true          # options: true, false
+  verbose: true         # options: true, false
+  experimental: true    # options: true, false
+
+# System settings are all optional, but can be used if executables are not on 
+# the PATH. Options in this section include: gs, pdftk, pdftoppm, qpdf, and 
+# rmapi.
+system:
+  gs: /usr/bin/gs
+
+# Settings for styling HTML sources. This section has support for a css field 
+# and a font_urls field. The former is expected to be a multiline string and 
+# the latter a list of urls.
+html:
+  css: |
+    @page { size: 702px 936px; margin: 1in; }
+    img { display: block; margin: 0 auto; text-align: center; max-width: 70%; }
+    h1,h2,h3 { font-family: 'Montserrat'; }
+    p, li { font-size: 12pt; line-height: 2; font-family: 'Montserrat'; }
+
+  font_urls:
+    - https://fonts.googleapis.com/css2?family=Montserrat&display=swap
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..ae82c87
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,72 @@
+# Makefile for paper2remarkable documentation
+#
+# Author: G.J.J. van den Burg
+# Copyright (c) 2020 G.J.J. van den Burg
+# License: See LICENSE file
+#
+
+SHELL := bash
+.SHELLFLAGS := -eu -o pipefail -c
+MAKEFLAGS += --no-builtin-rules
+
+VENV_DIR=/tmp/p2r_docs/
+OUTPUT_DIR=./output
+
+PACKAGE       = p2r
+SPHINXBUILD   = sphinx-build
+ALLSPHINXOPTS = -d .build/doctrees .
+
+.PHONY: all
+
+all: man
+
+############
+# Man page #
+############
+
+.PHONY: man output-dir clean_output
+
+man: $(OUTPUT_DIR)/$(PACKAGE).1
+	cp $< ../$(PACKAGE).1
+	@echo "Generated man page copied to ../$(PACKAGE).1"
+
+$(OUTPUT_DIR)/$(PACKAGE).1: man.rst | output-dir
+	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(OUTPUT_DIR)
+
+man.rst: man.md venv
+	source $(VENV_DIR)/bin/activate && m2r man.md
+
+output-dir:
+	mkdir -p $(OUTPUT_DIR)
+	mkdir -p _static
+
+clean_output:
+	rm -f man.rst
+	rm -rf $(OUTPUT_DIR)
+	rm -rf _static
+	rm -rf .build
+
+#######################
+# Virtual environment #
+#######################
+
+.PHONY: venv clean_venv
+
+venv: $(VENV_DIR)/bin/activate
+
+$(VENV_DIR)/bin/activate:
+	test -d $(VENV_DIR) || python -m venv $(VENV_DIR)
+	source $(VENV_DIR)/bin/activate && pip install m2r
+	touch $(VENV_DIR)/bin/activate
+
+clean_venv:
+	rm -rf $(VENV_DIR)
+
+############
+# Clean up #
+############
+
+.PHONY: venv
+
+clean: clean_venv clean_output
+	rm -f ../$(PACKAGE).1
diff --git a/docs/conf.py b/docs/conf.py
new file mode 100644
index 0000000..92961c1
--- /dev/null
+++ b/docs/conf.py
@@ -0,0 +1,62 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = "paper2remarkable"
+copyright = "2020, G.J.J. van den Burg"
+author = "Gertjan van den Burg"
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = []
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ["_templates"]
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = "alabaster"
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ["_static"]
+
+# Man page
+man_pages = [
+    (
+        "man",
+        "p2r",
+        "Fetch an academic paper or web article and send it to the reMarkable tablet",
+        author + " & other helpful contributors.",
+        1,
+    )
+]
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/docs/index.rst
diff --git a/docs/man.md b/docs/man.md
new file mode 100644
index 0000000..9c331f1
--- /dev/null
+++ b/docs/man.md
@@ -0,0 +1,195 @@
+# paper2remarkable
+
+## SYNOPSIS
+
+```
+p2r [OPTION]... [INPUT]...
+```
+
+## DESCRIPTION
+
+Fetch an academic paper, local pdf file, or any web article and send it to the 
+reMarkable tablet. The input to the script can be a URL to a PDF file or 
+article on a website, or a local file. For supported scientific outlets, the 
+program will collect the metadata for the paper and create a nice filename 
+(unless ``--filename`` is specified). See [SUPPORTED 
+SOURCES](#supported-sources) for an overview of supported scientific paper 
+sources.
+
+By default, paper2remarkable crops the unnecessary whitespace from a PDF file 
+to make the paper fit better on the reMarkable. The default setting yields a 
+left-aligned document on the reMarkable which can be useful for taking margin 
+notes. Alternatively, the program supports the ``--center``, ``--right``, and 
+``--no-crop`` options to change this crop setting.
+
+## OPTIONS
+
+Basic options:
+
+-b, --blank
+      Add a blank page after every page of the PDF document. This can be 
+      useful for taking notes on papers.
+
+-C, --config=FILENAME
+      Read options from a configuration file. A YAML file is supported, see 
+      [CONFIGURATION FILE](#configuration) for further details. By default the 
+      file at ``~/.paper2remarkable.yml`` is used if it exists.
+
+-e, --experimental
+      Enable the experimental features of paper2remarkable. See below under 
+      [EXPERIMENTAL FEATURES](#experimental-features) for an overview.
+
+-f, --filename=FILENAME
+      Filename to use for the file on reMarkable. If you specify multiple 
+      ``INPUT`` files and want to use a specific filename for each, you can 
+      specify ``--filename`` for each ``INPUT`` source by repeating it.
+
+-h, --help
+      Show help message and exit.
+
+-v, --verbose
+      Enable verbose mode of paper2remarkable. By default the program prints 
+      no output.
+
+-V, --version
+      Show the version and exit.
+
+Crop options:
+
+-c, --center
+      Center the PDF on the page.
+
+-k, --no-crop
+      Don't crop the document at all.
+
+-r, --right
+      Right-align the document on the reMarkable so the menu doesn't cover it.
+
+reMarkable options:
+
+-n, --no-upload
+      Don't upload the document to the reMarkable, save the output in the 
+      current working directory.
+
+-p, --remarkable-path=DIR
+      The directory on the reMarkable where the document will be uploaded to. 
+      If the target directory does not exist it will be created. If not 
+      specified, the root directory will be used.
+
+Output customization:
+
+--css=FILENAME
+      Path to a CSS file with custom styling for the HTML output. This option 
+      is ignored for any of the other providers. The code for the HTML 
+      provider contains the default CSS style, which can be used as a starting 
+      point.
+
+--font-urls=FILENAME
+      Path to a file with font urls (one per line) for the HTML output. This 
+      will generally be used in combination with the ``--css`` option.
+
+System settings:
+
+You'll only need to specify these options if the programs are not available on 
+the PATH variable.
+
+--gs=GS
+      Path to the GhostScript executable.
+
+--pdftoppm=PDFTOPPM
+      Path to pdftoppm executable (default: pdftoppm). Note that pdftoppm is 
+      optional.
+
+--pdftk=PDFTK
+      Path to PDFtk executable (default: pdftk). Either pdftk or qpdf is 
+      needed.
+
+--qpdf=QPDF
+      Path to qpdf executable (default: qpdf). Either pdftk or qpdf is needed.
+
+--rmapi=RMAPI
+      Path to rmapi executable (default: rmapi).
+
+Developer options:
+
+-d, --debug
+      Debug mode, when used the program doesn't upload the document to the 
+      reMarkable by default and leaves the temporary directory with 
+      intermediate files.
+
+## SUPPORTED SOURCES
+
+The following scientific sources are currently supported and paper2remarkable 
+will create a filename based on the authors, title, and publication year of 
+the work. For the sources below the program is generally flexible with regards 
+to whether a URL to the PDF or to the abstract page is provided.
+
+- arXiv
+- ACM Digital Library
+- CiteSeerX
+- CVF
+- JMLR
+- Nature
+- NBER
+- NeurIPS
+- OpenReview
+- PMLR
+- PubMed Central
+- SagePub
+- ScienceDirect
+- SemanticScholar
+- SpringerLink
+- Taylor & Francis
+
+paper2remarkable also supports a generic URL to a PDF file or a local file, in 
+which case no "nice" filename will be generated.
+
+- A generic URL to a PDF file. This can be considered a fallback option for 
+  when a PDF source is not supported (yet).
+- A local PDF file.
+
+Finally, paper2remarkable supports extracting articles from websites. In this 
+case an effort is done to detect the main content of the article and clean up 
+the HTML before sending the file to the reMarkable.
+
+## CONFIGURATION FILE
+
+To avoid having to provide frequently-used command line flags, a configuration 
+file can be created for paper2remarkable. By default it is a YAML file located 
+at ``~/.paper2remarkable.yml``, but an alternative location can be provided 
+with the ``--config`` option to the script.
+
+The configuration file consists of three sections: ``core``, ``system``, and 
+``html``. In the ``core`` section options for cropping, verbosity, and blank 
+pages can be added, among others. The ``system`` section allows setting paths 
+to executables such as ``rmapi``, ``pdftk``, etc.  Finally, the ``html`` 
+section allows you to provide custom CSS and font urls for formatting the 
+output of web articles.
+
+Options provided on the command line overwrite those in the configuration 
+file. So, for instance, if the configuration file has the setting ``crop: 
+'left'`` in the ``core`` section and the command line flag ``-c`` is provided, 
+the PDF will be centered.
+
+An example file is provided in the repository on 
+[GitHub](https://www.github.com/GjjvdBurg/paper2remarkable), which also 
+contains more information on the available options and their values.
+
+## EXPERIMENTAL FEATURES
+
+Occassionally, experimental (beta) features will be included in 
+paper2remarkable and they will be listed here. You can enable the experimental 
+features by using the ``-e`` flag to paper2remarkable.
+
+- The HTML provider currently has an experimental feature to handle lazy 
+  loading of images. Certain websites use a small placeholder image and load 
+  the main image using Javascript, with the actual image source stored in a 
+  ``data-src`` attribute in the ``img`` tag. The experimental feature uses the 
+  ``data-src`` attribute as the image source instead of that in the ``src`` 
+  attribute.
+
+## BUGS
+
+Please report bugs to:
+
+https://www.github.com/GjjvdBurg/paper2remarkable
diff --git a/paper2remarkable/__version__.py b/paper2remarkable/__version__.py
index 2b9f826..5f406ca 100644
--- a/paper2remarkable/__version__.py
+++ b/paper2remarkable/__version__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
 
-VERSION = (0, 8, 0)
+VERSION = (0, 8, 6)
 
 __version__ = ".".join(map(str, VERSION))
diff --git a/paper2remarkable/log.py b/paper2remarkable/log.py
index fb9d8a3..8240a62 100644
--- a/paper2remarkable/log.py
+++ b/paper2remarkable/log.py
@@ -9,8 +9,8 @@ Copyright: 2019, G.J.J. van den Burg
 """
 
 # NOTE: I know about the logging module, but this was easier because one of the
-# dependencies was using that and it became complicated. This one is obviously
-# not thread-safe and is very simple.
+# dependencies was using that and it interfered with our logging. The logger
+# class below is obviously not thread-safe and is very simple.
 
 import datetime
 import sys
diff --git a/paper2remarkable/providers/__init__.py b/paper2remarkable/providers/__init__.py
index 371ab82..2be218f 100644
--- a/paper2remarkable/providers/__init__.py
+++ b/paper2remarkable/providers/__init__.py
@@ -15,6 +15,7 @@ from .pdf_url import PdfUrl
 from .pmlr import PMLR
 from .pubmed import PubMed
 from .sagepub import SagePub
+from .science_direct import ScienceDirect
 from .semantic_scholar import SemanticScholar
 from .springer import Springer
 from .tandfonline import TandFOnline
@@ -33,6 +34,7 @@ providers = [
     PMLR,
     PubMed,
     SagePub,
+    ScienceDirect,
     Springer,
     SemanticScholar,
     TandFOnline,
diff --git a/paper2remarkable/providers/_base.py b/paper2remarkable/providers/_base.py
index 57774d6..0453c7a 100644
--- a/paper2remarkable/providers/_base.py
+++ b/paper2remarkable/providers/_base.py
@@ -38,29 +38,34 @@ class Provider(metaclass=abc.ABCMeta):
         verbose=False,
         upload=True,
         debug=False,
-        center=False,
-        right=False,
+        experimental=False,
+        crop="left",
         blank=False,
-        no_crop=False,
         remarkable_dir="/",
         rmapi_path="rmapi",
         pdftoppm_path="pdftoppm",
         pdftk_path="pdftk",
         qpdf_path="qpdf",
         gs_path="gs",
+        css=None,
+        font_urls=None,
         cookiejar=None,
     ):
         self.upload = upload
         self.debug = debug
+        self.experimental = experimental
         self.remarkable_dir = remarkable_dir
         self.rmapi_path = rmapi_path
         self.pdftoppm_path = pdftoppm_path
         self.pdftk_path = pdftk_path
         self.qpdf_path = qpdf_path
         self.gs_path = gs_path
-        self.informer = Informer()
+        self.css = css
+        self.font_urls = font_urls
         self.cookiejar = cookiejar
 
+        self.informer = Informer()
+
         self.pdftool = check_pdftool(self.pdftk_path, self.qpdf_path)
 
         # wait time to not hit the server too frequently
@@ -72,11 +77,11 @@ class Provider(metaclass=abc.ABCMeta):
 
         # Define the operations to run on the pdf. Providers can add others.
         self.operations = [("rewrite", self.rewrite_pdf)]
-        if center:
+        if crop == "center":
             self.operations.append(("center", self.center_pdf))
-        elif right:
+        elif crop == "right":
             self.operations.append(("right", self.right_pdf))
-        elif not no_crop:
+        elif crop == "left":
             self.operations.append(("crop", self.crop_pdf))
 
         if blank:
diff --git a/paper2remarkable/providers/html.py b/paper2remarkable/providers/html.py
index e050ea3..c22cac4 100644
--- a/paper2remarkable/providers/html.py
+++ b/paper2remarkable/providers/html.py
@@ -13,12 +13,12 @@ Copyright: 2020, G.J.J. van den Burg
 
 import html2text
 import markdown
+import re
 import readability
 import titlecase
 import unidecode
 import urllib
 import weasyprint
-import weasyprint.fonts
 
 from ._base import Provider
 from ._info import Informer
@@ -33,7 +33,6 @@ from ..log import Logger
 logger = Logger()
 
 CSS = """
-@import url('https://fonts.googleapis.com/css?family=EB+Garamond|Noto+Serif|Inconsolata&display=swap');
 @page { size: 702px 936px; margin: 1in; }
 a { color: black; }
 img { display: block; margin: 0 auto; text-align: center; max-width: 70%; max-height: 300px; }
@@ -47,6 +46,13 @@ pre { font-family: 'Inconsolata'; padding-left: 2.5%; background: #efefef; }
 code { font-family: 'Inconsolata'; font-size: .7rem; background: #efefef; }
 """
 
+# NOTE: For some reason, Weasyprint no longer accepts the @import statement in
+# the CSS to load the fonts. This may have to do with recent changes they've
+# introduced. Providing the font urls separately does seem to work.
+FONT_URLS = [
+    "https://fonts.googleapis.com/css2?family=EB+Garamond&family=Noto+Serif&family=Inconsolata"
+]
+
 
 def url_fetcher(url):
     if url.startswith("//"):
@@ -133,6 +139,41 @@ class HTML(Provider):
     def get_abs_pdf_urls(self, url):
         return url, url
 
+    def fix_lazy_loading(self, article):
+        if not self.experimental:
+            return article
+
+        # This attempts to fix sites where the image src element points to a
+        # placeholder and the data-src attribute contains the url to the actual
+        # image. Note that results may differ between readability and
+        # Readability.JS
+        regex = '<img src="(?P<src>.*?)" (?P<rest1>.*) data-src="(?P<datasrc>.*?)" (?P<rest2>.*?)>'
+        sub = '<img src="\g<datasrc>" \g<rest1> \g<rest2>>'
+
+        article, nsub = re.subn(regex, sub, article, flags=re.MULTILINE)
+        if nsub:
+            logger.info(
+                f"[experimental] Attempted to fix lazy image loading ({nsub} times). "
+                "Please report bad results."
+            )
+        return article
+
+    def preprocess_html(self, pdf_url, title, article):
+        article = self.fix_lazy_loading(article)
+
+        h2t = html2text.HTML2Text()
+        h2t.wrap_links = False
+        text = h2t.handle(article)
+
+        # Add the title back to the document
+        article = "# {title}\n\n{text}".format(title=title, text=text)
+
+        # Convert to html, fixing relative image urls.
+        md = markdown.Markdown()
+        md.treeprocessors.register(ImgProcessor(pdf_url), "img", 10)
+        html_article = md.convert(article)
+        return html_article
+
     def retrieve_pdf(self, pdf_url, filename):
         """Turn the HTML article in a clean pdf file
 
@@ -152,27 +193,17 @@ class HTML(Provider):
             request_html = get_page_with_retry(pdf_url, return_text=True)
             title, article = make_readable(request_html)
 
-        h2t = html2text.HTML2Text()
-        h2t.wrap_links = False
-        text = h2t.handle(article)
-
-        # Add the title back to the document
-        article = "# {title}\n\n{text}".format(title=title, text=text)
-
-        # Convert to html, fixing relative image urls.
-        md = markdown.Markdown()
-        md.treeprocessors.register(ImgProcessor(pdf_url), "img", 10)
-        html_article = md.convert(article)
+        html_article = self.preprocess_html(pdf_url, title, article)
 
         if self.debug:
             with open("./paper.html", "w") as fp:
                 fp.write(html_article)
 
-        font_config = weasyprint.fonts.FontConfiguration()
         html = weasyprint.HTML(string=html_article, url_fetcher=url_fetcher)
-        css = weasyprint.CSS(string=CSS, font_config=font_config)
-
-        html.write_pdf(filename, stylesheets=[css], font_config=font_config)
+        css = CSS if self.css is None else self.css
+        font_urls = FONT_URLS if self.font_urls is None else self.font_urls
+        style = weasyprint.CSS(string=css)
+        html.write_pdf(filename, stylesheets=[style] + font_urls)
 
     def validate(src):
         # first check if it is a valid url
diff --git a/paper2remarkable/providers/science_direct.py b/paper2remarkable/providers/science_direct.py
new file mode 100644
index 0000000..704a3b0
--- /dev/null
+++ b/paper2remarkable/providers/science_direct.py
@@ -0,0 +1,106 @@
+# -*- coding: utf-8 -*-
+
+"""Provider for ScienceDirect
+
+Author: G.J.J. van den Burg
+License: See LICENSE file
+Copyright: 2020, G.J.J. van den Burg
+
+"""
+
+import re
+import bs4
+import urllib
+import json
+
+from ._base import Provider
+from ._info import Informer
+from ..exceptions import URLResolutionError
+from ..log import Logger
+from ..utils import get_page_with_retry, follow_redirects
+
+logger = Logger()
+
+
+class ScienceDirectInformer(Informer):
+
+    meta_date_key = "citation_publication_date"
+
+    def get_authors(self, soup):
+        surname_tags = soup.find_all("span", attrs={"class": "text surname"})
+        if not surname_tags:
+            logger.warning(
+                "Couldn't determine author information, maybe provide the desired filename using '--filename'?"
+            )
+            return ""
+        authors = [x.text for x in surname_tags]
+        return authors
+
+
+class ScienceDirect(Provider):
+
+    re_abs = (
+        "https?:\/\/www.sciencedirect.com/science/article/pii/[A-Za-z0-9]+"
+    )
+    re_pdf = "https://pdf.sciencedirectassets.com/\d+/([0-9a-zA-Z\-\.]+)/(?P<data>[0-9a-zA-Z\-\.]+)/main.pdf\?.*"
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.informer = ScienceDirectInformer()
+
+    def get_abs_pdf_urls(self, url):
+        m1 = re.match(self.re_abs, url)
+        m2 = re.match(self.re_pdf, url)
+        if m1:
+            abs_url = url
+            pdf_url = self._get_pdf_url(abs_url)
+        elif m2:
+            pdf_url = url
+            data = m2.group("data")
+            paper_id = data.split("-")[-1]
+            abs_url = (
+                f"https://www.sciencedirect.com/science/article/pii/{paper_id}"
+            )
+        else:
+            raise URLResolutionError("ScienceDirect", url)
+        return abs_url, pdf_url
+
+    def _get_pdf_url(self, url):
+        page = get_page_with_retry(url)
+        soup = bs4.BeautifulSoup(page, "html.parser")
+
+        # For open access (and maybe behind institution?) the full text pdf url
+        # is currently in the json payload of a script tag.
+        scripts = soup.find_all("script", attrs={"data-iso-key": "_0"})
+        if not scripts:
+            raise URLResolutionError("ScienceDirect", url)
+        json_data = scripts[0].string
+        data = json.loads(json_data)
+        if not "article" in data:
+            raise URLResolutionError("ScienceDirect", url)
+        data = data["article"]
+        if not "pdfDownload" in data:
+            raise URLResolutionError("ScienceDirect", url)
+        data = data["pdfDownload"]
+        if not "linkToPdf" in data:
+            raise URLResolutionError("ScienceDirect", url)
+        link = data["linkToPdf"]
+        tmp_url = urllib.parse.urljoin("https://sciencedirect.com/", link)
+
+        # tmp_url gives a page with a ten second wait or a direct url, we need
+        # the direct url
+        page = get_page_with_retry(tmp_url)
+        soup = bs4.BeautifulSoup(page, "html.parser")
+        noscript = soup.find_all("noscript")
+        if not noscript:
+            raise URLResolutionError("ScienceDirect", url)
+        a = noscript[0].find_all("a")
+        if not a:
+            raise URLResolutionError("ScienceDirect", url)
+        pdf_url = a[0].get("href")
+        return pdf_url
+
+    def validate(src):
+        return re.match(ScienceDirect.re_abs, src) or re.match(
+            ScienceDirect.re_pdf, src
+        )
diff --git a/paper2remarkable/ui.py b/paper2remarkable/ui.py
index ea24403..6f95e30 100644
--- a/paper2remarkable/ui.py
+++ b/paper2remarkable/ui.py
@@ -9,7 +9,10 @@ Copyright: 2019, G.J.J. van den Burg
 """
 
 import argparse
+import copy
+import os
 import sys
+import yaml
 
 from . import __version__, GITHUB_URL
 
@@ -41,9 +44,15 @@ def parse_args():
         action="store_true",
     )
     parser.add_argument(
+        "-e",
+        "--experimental",
+        help="enable experimental features",
+        action="store_true",
+    )
+    parser.add_argument(
         "-n",
         "--no-upload",
-        help="don't upload to the reMarkable, save the output in current working dir",
+        help="don't upload to reMarkable, save the output in current directory",
         action="store_true",
     )
     parser.add_argument(
@@ -73,32 +82,47 @@ def parse_args():
         version=__version__,
     )
     parser.add_argument(
+        "-f",
         "--filename",
         help="Filename to use for the file on reMarkable",
         action="append",
     )
     parser.add_argument(
-        "--gs", help="path to gs executable (default: gs)", default="gs"
+        "--gs", help="path to gs executable (default: gs)", default=None
     )
     parser.add_argument(
         "--pdftoppm",
         help="path to pdftoppm executable (default: pdftoppm)",
-        default="pdftoppm",
+        default=None,
     )
     parser.add_argument(
         "--pdftk",
         help="path to pdftk executable (default: pdftk)",
-        default="pdftk",
+        default=None,
     )
     parser.add_argument(
         "--qpdf",
         help="path to qpdf executable (default: qpdf)",
-        default="qpdf",
+        default=None,
     )
     parser.add_argument(
         "--rmapi",
         help="path to rmapi executable (default: rmapi)",
-        default="rmapi",
+        default=None,
+    )
+    parser.add_argument(
+        "--css", help="path to custom CSS file for HTML output", default=None
+    )
+    parser.add_argument(
+        "--font-urls",
+        help="path to custom font urls file for HTML output",
+        default=None,
+    )
+    parser.add_argument(
+        "-C",
+        "--config",
+        help="path to config file (default: ~/.paper2remarkable.yml)",
+        default=None,
     )
     parser.add_argument(
         "input",
@@ -171,6 +195,72 @@ def choose_provider(cli_input):
     return provider, new_input, cookiejar
 
 
+def load_config(path=None):
+    if path is None:
+        path = os.path.join(os.path.expanduser("~"), ".paper2remarkable.yml")
+    if not os.path.exists(path):
+        return {"core": {}, "system": {}, "html": {}}
+    with open(path, "r") as fp:
+        config = yaml.safe_load(fp)
+    return config
+
+
+def merge_options(config, args):
+    # command line arguments always overwrite config
+    opts = copy.deepcopy(config)
+    opts.setdefault("core", {})
+    opts.setdefault("system", {})
+    opts.setdefault("html", {})
+
+    def set_bool(d, key, value):
+        if value:
+            d[key] = True
+        elif not key in d:
+            d[key] = False
+
+    def set_path(d, key, value):
+        if not value is None:
+            d[key] = value
+        elif not key in d:
+            d[key] = key
+
+    set_bool(opts["core"], "blank", args.blank)
+    set_bool(opts["core"], "verbose", args.verbose)
+    set_bool(opts["core"], "upload", not args.no_upload)
+    set_bool(opts["core"], "experimental", args.experimental)
+
+    if args.center:
+        opts["core"]["crop"] = "center"
+    elif args.right:
+        opts["core"]["crop"] = "right"
+    elif args.no_crop:
+        opts["core"]["crop"] = "none"
+    elif not "crop" in opts["core"]:
+        opts["core"]["crop"] = "left"
+
+    set_path(opts["system"], "gs", args.gs)
+    set_path(opts["system"], "pdftoppm", args.pdftoppm)
+    set_path(opts["system"], "pdftk", args.pdftk)
+    set_path(opts["system"], "qpdf", args.qpdf)
+    set_path(opts["system"], "rmapi", args.rmapi)
+
+    if args.css and os.path.exists(args.css):
+        with open(args.css, "r") as fp:
+            contents = fp.read()
+        opts["html"]["css"] = contents
+    else:
+        opts["html"]["css"] = None
+
+    if args.font_urls and os.path.exists(args.font_urls):
+        with open(args.font_urls, "r") as fp:
+            urls = [l.strip() for l in fp.readlines()]
+        opts["html"]["font_urls"] = urls
+    else:
+        opts["html"]["font_urls"] = None
+
+    return opts
+
+
 def set_excepthook(debug):
     sys_hook = sys.excepthook
 
@@ -201,6 +291,9 @@ def main():
             "When providing --filename and multiple inputs, their number must match."
         )
 
+    config = load_config(path=args.config)
+    options = merge_options(config, args)
+
     filenames = (
         [None] * len(args.input) if not args.filename else args.filename
     )
@@ -208,19 +301,20 @@ def main():
     for cli_input, filename in zip(args.input, filenames):
         provider, new_input, cookiejar = choose_provider(cli_input)
         prov = provider(
-            verbose=args.verbose,
-            upload=not args.no_upload,
+            verbose=options["core"]["verbose"],
+            upload=options["core"]["upload"],
             debug=args.debug,
-            center=args.center,
-            right=args.right,
-            blank=args.blank,
-            no_crop=args.no_crop,
+            experimental=options["core"]["experimental"],
+            crop=options["core"]["crop"],
+            blank=options["core"]["blank"],
             remarkable_dir=args.remarkable_dir,
-            rmapi_path=args.rmapi,
-            pdftoppm_path=args.pdftoppm,
-            pdftk_path=args.pdftk,
-            qpdf_path=args.qpdf,
-            gs_path=args.gs,
+            rmapi_path=options["system"]["rmapi"],
+            pdftoppm_path=options["system"]["pdftoppm"],
+            pdftk_path=options["system"]["pdftk"],
+            qpdf_path=options["system"]["qpdf"],
+            gs_path=options["system"]["gs"],
+            css=options["html"]["css"],
+            font_urls=options["html"]["font_urls"],
             cookiejar=cookiejar,
         )
         prov.run(new_input, filename=filename)
diff --git a/setup.py b/setup.py
index 54a8cb1..e529cc2 100644
--- a/setup.py
+++ b/setup.py
@@ -19,17 +19,18 @@ VERSION = None
 
 # What packages are required for this module to be executed?
 REQUIRED = [
+    "PyPDF2>=1.26",
     "beautifulsoup4>=4.8",
-    "requests>=2.21",
+    "html2text>=2020.1.16",
+    "markdown>=3.1.1",
     "pdfplumber>=0.5",
-    "unidecode>=1.1",
-    "titlecase>=0.12",
-    "PyPDF2>=1.26",
-    "regex>=2018.11",
+    "pyyaml>=5.1",
     "readability-lxml>=0.7.1",
-    "html2text>=2020.1.16",
+    "regex>=2018.11",
+    "requests>=2.21",
+    "titlecase>=0.12",
+    "unidecode>=1.1",
     "weasyprint>=51",
-    "markdown>=3.1.1",
 ]
 
 full_require = ["readabilipy"]
@@ -86,6 +87,7 @@ setup(
     install_requires=REQUIRED,
     extras_require=EXTRAS,
     include_package_data=True,
+    data_files=[("man/man1", ["p2r.1"])],
     license=LICENSE,
     ext_modules=[],
     entry_points={"console_scripts": ["p2r = paper2remarkable.__main__:main"]},
diff --git a/tests/test_html.py b/tests/test_html.py
new file mode 100644
index 0000000..41f6b83
--- /dev/null
+++ b/tests/test_html.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Additional tests for the HTML provider
+
+This file is part of paper2remarkable.
+
+"""
+
+import os
+import pdfplumber
+import unittest
+
+from paper2remarkable.providers.html import HTML
+from paper2remarkable.providers.html import make_readable
+from paper2remarkable.utils import get_page_with_retry
+
+
+class TestHTML(unittest.TestCase):
+    def test_experimental_fix_lazy_loading(self):
+        url = "https://www.seriouseats.com/2015/01/tea-for-everyone.html"
+        prov = HTML(upload=False, experimental=True)
+        page = get_page_with_retry(url, return_text=True)
+        title, article = make_readable(page)
+        html_article = prov.preprocess_html(url, title, article)
+        expected_image = "https://www.seriouseats.com/images/2015/01/20150118-tea-max-falkowitz-3.jpg"
+        self.assertIn(expected_image, html_article)
+
+    def test_custom_css(self):
+        test_css = """
+        @page { size: 702px 936px; margin: 1in; }
+        img { display: block; margin: 0 auto; text-align: center; max-width: 70%; max-height: 300px; }
+        h1,h2,h3 { font-family: 'Montserrat'; }
+        p, li { font-size: 12pt; line-height: 2; font-family: 'Montserrat'; text-align: left; }
+        """
+
+        test_font_urls = [
+            "https://fonts.googleapis.com/css2?family=Montserrat&display=swap"
+        ]
+
+        url = "https://hbr.org/2019/11/getting-your-team-to-do-more-than-meet-deadlines"
+        prov = HTML(upload=False, css=test_css, font_urls=test_font_urls)
+        filename = prov.run(url)
+        with pdfplumber.open(filename) as pdf:
+            self.assertEqual(8, len(pdf.pages))
+
+        os.unlink(filename)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tests/test_providers.py b/tests/test_providers.py
index 9b2f24d..db616e9 100644
--- a/tests/test_providers.py
+++ b/tests/test_providers.py
@@ -28,6 +28,7 @@ from paper2remarkable.providers import (
     PdfUrl,
     PubMed,
     SagePub,
+    ScienceDirect,
     SemanticScholar,
     Springer,
     TandFOnline,
@@ -392,6 +393,27 @@ class TestProviders(unittest.TestCase):
         filename = prov.run(url)
         self.assertEqual(exp, os.path.basename(filename))
 
+    def test_sciencedirect_1(self):
+        prov = ScienceDirect(upload=False, verbose=VERBOSE)
+        url = "https://www.sciencedirect.com/science/article/pii/S0166354220302011"
+        exp = "Caly_et_al_-_The_FDA-approved_Drug_Ivermectin_Inhibits_the_Replication_of_SARS-CoV-2_in_Vitro_2020.pdf"
+        filename = prov.run(url)
+        self.assertEqual(exp, os.path.basename(filename))
+
+    def test_sciencedirect_2(self):
+        prov = ScienceDirect(upload=False, verbose=VERBOSE)
+        url = "https://www.sciencedirect.com/science/article/pii/S0047235220302543"
+        exp = "Bolger_Lytle_Bolger_-_What_Matters_in_Citizen_Satisfaction_With_Police_a_Meta-Analysis_2021.pdf"
+        filename = prov.run(url)
+        self.assertEqual(exp, os.path.basename(filename))
+
+    def test_sciencedirect_3(self):
+        prov = ScienceDirect(upload=False, verbose=VERBOSE)
+        url = r"https://pdf.sciencedirectassets.com/272398/1-s2.0-S0022039616X00095/1-s2.0-S0022039616001029/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjELf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJIMEYCIQCRRFGFc7b02V86pkMeqytyBK%2BR8I%2BfdsIpYbjfXSpIBwIhAORxDxLYdr4EoSyn1P7wlhG%2F1RnX8tIG0IRGOidKKm69KrQDCDAQAxoMMDU5MDAzNTQ2ODY1IgwzsYwSRMjSfdr4cbUqkQOPUxG702LEv3POe5ESC9FBVVHGeUF%2BB46FTtWqkhHgjkRIpuoFiavu1cuBWHQ9FwCZjcocan56LfXiySYBfl259MC8ieSYor9FKZLBaAhDCEblkiTdW2%2Fk4nfogp6fwWVdckC8gGVbu3wQ9Mdh%2FE91ZEix%2FIftmJ6IpAZkm0l0AFFt%2BngI7geWoZDeku5iImEUw6JJPgFz5Yw9cKa%2FuGM3hi29JsuI30qzBqZC9nGRCIx%2FLYeiDfF1v0QjFLmT%2FE5xpaNxMt%2FoWLiazRcconSQCCax6%2Bw9SR4NvWg2illOrLMEPuRYacIFRNhV9zj7Y06Bf%2BfG%2FTQxXdnDLH0VMkUWx%2BgjwRAqSvIb0JRg9q5gErPB1cZLCuCd3ybFSmtj7aQmfl7uhMAjQwnCcN6fhtlVK6Xb3Us7YglDaHekzf8RDv9stbxBWFGMPVmDUXHWOsUo89LY%2F9IbtQTs5Uu3ieMGePUVMY4ox3FPYAb5jWjaOFqs54LqfQ5nqjkLMiAY%2F11zCVyOAoPiDnDs6Wjuj52iszCtuc%2F9BTrqATkmIC%2Bu2w6MEow0zbPVAaqNF%2BjUh8Tv%2BWTInq9G3Q4PXIqL3CNNiISPDvuUggRwWGJDgXtr0C%2B4Gtv1bfs3BGHHgWOD261c6O0LHQuP11BLN8GCr7bFO1hjVAqHhC06vyhGQRmRzN32CPwo8pUM2gWw9xXGUioUiSJ%2FgRpDaszsW4Yr8Wm7L9Q7jAOYxEf7WLxPwAWO69o8JbJoouxwL4qeTEGMJ5IpUk3x3xPQIlawOlqY%2FHi0s4E1DE4ZMjH21hc3PrQ%2FiwI%2BTqY9Rg5sjLCBJ4vRCiqb3dpOWLsR5LFOTySXWoqIdO7b9Q%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20201117T155020Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTY7OS7PK7A%2F20201117%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=03abad117208b684a1a4ca2ffdcbe5b9a40a19e6c841c609e299315a2f2234ce&hash=24f71da9f05f6835c9797841d1462d11eea85c49e9655dde043ed9f748edf17e&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S0022039616001029&tid=spdf-6b78a4fa-826e-4267-8ce6-43c814fa51b2&sid=776192553463724f1a4b56613fcf5e514b72gxrqb&type=client"
+        exp = "Kristiansen_Wulff_-_Exponential_Estimates_of_Symplectic_Slow_Manifolds_2016.pdf"
+        filename = prov.run(url)
+        self.assertEqual(exp, os.path.basename(filename))
+
 
 if __name__ == "__main__":
     unittest.main()