Notestark for Chrome

Select text, pick a colour or an underline, and it stays. Close the tab, restart the browser, come back a week later — the marks are still there.

What it does

Local .md and .html opened straight from disk: exported documentation, README files, API references, specs.

No account, no server, no network request anywhere in the extension. Marks are stored locally, and never in a cookie.

They combine — a passage can be yellow and underlined. Every colour keeps text at WCAG AAA contrast.

Each mark remembers the text around it, so it is found again when the document changes. Renaming a local file does not lose it.

Write a note on any mark. A small dot shows where one is, and the panel lists every note on the page beside the outline and the marks.

Translate a passage with the translator built into Chrome and keep the result as a note. Nothing is sent to a translation service.

Local files — Chrome keeps this behind its own switch. Open the extension's details page and turn on Allow access to file URLs. The extension cannot do this for you; only you can.
Websites — click the toolbar icon and choose Enable on this site or Enable on all sites. Revocable from the same place, at any time.

Because website access is optional, installing the extension shows no permission warning at all.

Chrome 105 or newer
Translation needs Chrome 138 or newer, on desktop
Chrome does not let any extension run on chrome:// pages, the Web Store, or other extensions' pages
Tags, and search across documents, do not exist yet — they are what the app is for
Some single-page applications rewrite their address after loading, which can make a mark harder to find again

Something not working, or an idea for it? The support page has the answers to the common questions and the address to write to.