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Another piece of your extended mind
Python JavaScript CSS HTML Shell
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CircleCI (just started configuring CI)

Has it ever occured to you that you were reading an old bookmark or some lengthy blog post and suddenly realized you had read it already before? It would be fairly easy to search in chrome history, however it is only stored locally for three months.

Or perhaps you even have a habit of annotating and making notes elsewhere? And you wanna know quickly if you have the current page annotated. Then this tool is for you.

The Chrome extension consumes a JSON file with history. It may be generated from:

  • local sqlite history database backups
  • Google Takeout/Activity backups
  • custom shell command
  • [todo] file system link indexers
  • in general, it's super extendable. It's JSON, after all!

See more in

Demo (as of v 0.5)

Demo screenshot

Apologies for design, I'm not great at it and it's a screenshot of the first (as of v 0.5) version of sidebar :)

Some explanations:

  • green eye indicates that the link was visited, so after you click it, you get the sidebar with more information

  • Visits: I have this link added in my Pinboard, and visited it few times from different computers.

  • Contexts

    • I chatted with some of my friends and sent them the link at some point. If I click the context, my Emacs will jump right at the point where the link was in the Telegram backup file. Json is clearly not the most convenient way to go through conversations with friends, but that's a matter of representing chats in a plaintext form. The benefit though is that once you have any sort of grepable source it's super easy to feed it into the plugin.
    • I had this link stored somewhere in my org mode notes in file.
    • I also have this link annotated via Hypothesis!


  • generator: TODO cp, edit, run python3 -m wereyouhere then, see the comments in the for more information on using various history sources.
  • extension: choose the generated JSON in the extension settings


To generate the URL database, run:


To use chrome extension, just 'load unpacked' on chrome://extensions/

Dev dependencies

  • npm install -g web-ext for extension signing and Android testing
  • firefox dev edition (standard wouldn't let you install unsigned extensions)
  • gechodriver
  • pip3 install pyautogui for end to end tests


  • [in progress] be more informative; show full history or at least last visit and potentially sources (e.g. hypothesis)
    • maybe icons for mobile/desktop?
  • use some sort of smarter matching, e.g. no difference between http and https; normalise, remove trailing slash, etc, ignore some schemas/urls
    • use some python lib to extract normalised urls? there must be something.. however normalisation has to be simple enough, so JS site could use it too.
  • handle url-decoding propely
  • merge chrome db backups to avoid duplication
  • update map daily/hourly?
  • web service? so you don't have to carry the generated json file around
  • better regex fox url extraction eh, urls can have commas... e.g.,_applicatives,_and_monads_in_pictures.html so, for csv need a separate extractor.
  • describe why and what for each permission used
  • timestamps seem wrong either in JS or in sqlite backup (most likely in sqlite)
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