Show HN: Reveal top HN articles, a privacy preserving Chrome extension (chrome.google.com)

Hey HN, I would like to share this hobby project and get feedback.

I am a frequent reader of HN, to a point that I am often interested to know if the website I am reading is an HN hit article or not. A year ago, I wanted to build a chrome extension that would reveal the HN score of the website I am reading. A legitimate approach would be sending the site URL to HN search and then getting the score. That's not desirable as that leaks all my reading history to a 3rd party website.

I came up with the idea of building it in the opposite way. First I created compact indexes (via bloom filters) of HN articles with scores of more than 400. Then I created a cron job to create such an index every day. Last, I made an extension that downloads the index and then checks the history locally.

The end outcome is that there is no history leak to 3rd party site.

The extension has been working well for me over the last year, and I would like to share it and also get feedback. Thank you!