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linkbak is a web page archiver : it reads a list of links and dumps the corresponding pages in HTML and PDF.

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What is linkbak

linkbak is a web page archiver : it reads a list of links and dumps the corresponding pages in HTML and PDF. It is somewhat similar to bookmark-archiver, but lighter (no UI) and faster.

The HTML content is extracted with python's requests/readability, PDFs are generated with chromium in headless mode. For an even better readability, the DOM (extracted by chromium, again in headless mode) is parsed by Mozilla's readability and processed by Pandoc to produce MOBI, EPUB, Markdown and a cleaner PDF output.

Moreover, links can be processed in parallel. Previous failed attempts can be either ignored or retried, and a custom timeout is supported.

Input

  • Atom (URL or local)
  • RSS (URL or local)
  • HTML (local)
  • text file containing a list of URLs (one per line)

Output

Pages (HTML/PDF) are stored in output directories identified by the sha256 of the links to avoid collisions. An additional JSON index is also written to keep track of which links are stored in which directory.

Downloaded files can be browsed with your browser:

  • start python's integrated web server: cd output && python -m http.server
  • open your browser at http://localhost:8000

Installation

The easy way, with Docker:

  • Retrieve from docker hub: docker pull aurelg/linkbak
  • Or create your image locally: git clone https://github.com/aurelg/linkbak.git && docker build -t linkbak linkbak/

If you want to install it manually, just clone this repository and make sure you have the following dependencies installed:

  • chromium (or google-chrome)
  • texlive
  • pandoc
  • nodejs (and a few packages than can be installed with npm install ...: fs, jsdom and https://github.com/mozilla/readability)

Example

Example: lnk2bak.py -v -j10 https://github.com/shaarli/Shaarli/releases.atom

Or with docker:

docker run \
  -v $(pwd):/workdir \
  -u $(id -u):$(id -g) \
  --rm -ti linkbak \
  /linkbak/src/linkbak/lnk2bak.py -j1 -vvv links.txt

You may want to define an alias like:

alias linkbak='docker run -v \$(pwd):/workdir -u $(id -u):$(id -g) --rm -ti aurelg/linkbak /linkbak/src/linkbak/lnk2bak.py'

This command downloads HTML and generates PDFs for each of the links found in the Shaarli atom feed on Github, allowing up to 10 downloads in parallel.

Output:

.
├── 394a30c14c9f36....
│   ├── index.html
│   ├── metadata.json
│   └── output.pdf
├── 4357bbfb8b7788....
│   ├── index.html
│   ├── metadata.json
│   └── output.pdf
├── 51ec955a6fe728....
│   ├── index.html
│   ├── metadata.json
│   └── output.pdf
...

10 directories, 31 files

If the HTML, metadata or PDF cannot be retrieved, an error message is written in a logfile named {index.html,metadata.json,output.pdf}.log, respectively.

In each link directory, a metadata.json file containing the sha156 and the URL is written:

{
 "id": "394a30c14c9f36830d77dca945ed6d558ea3ede08b9009bbffa3b6e92dc68f30",
 "link": "https://github.com/shaarli/Shaarli/releases/tag/v0.9.6"
}

All these metadata.json files are eventually merged in results.json once all links are processed:

[
 {
  "id": "51ec955a6fe728451be9c8ae654f1012e376e77ae45ad8235ef9dd67b3f016d8",
  "link": "https://github.com/shaarli/Shaarli/releases/tag/v0.8.7"
 },
 {
  "id": "ea2cf19731ad7a1378e6d7d1b4dc84c65ee8808328db98dd80cc17cce6728bb3",
  "link": "https://github.com/shaarli/Shaarli/releases/tag/v0.9.3"
 },
 {
  "id": "394a30c14c9f36830d77dca945ed6d558ea3ede08b9009bbffa3b6e92dc68f30",
  "link": "https://github.com/shaarli/Shaarli/releases/tag/v0.9.6"
 },
 ...
]

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linkbak is a web page archiver : it reads a list of links and dumps the corresponding pages in HTML and PDF.

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