Free tools
Tools that never see your files
Bookmark exports, Pocket CSVs, and messy URLs are processed in this tab. No account. No API. Import into Markwise only if you want a library you can ask.
Bookmarks
Inspect, convert, and clean the files browsers actually export.
Bookmark file analyzer
Open a Chrome, Firefox, or Safari bookmarks.html export in your browser. See folders, duplicates, domains, and tracking URLs. Nothing is uploaded.
Duplicate bookmark finder
Find duplicate bookmarks in a bookmarks.html export or a pasted URL list. Deduplicate in your browser and download a clean file.
Pocket export converter
Convert a saved Pocket CSV export to bookmarks HTML or JSON in your browser. Pocket shut down in 2025; the file you downloaded still works here.
Tab overload calculator
Estimate memory and attention cost of too many Chrome tabs, then park the window as a Focus Session instead of leaving it open.
Links
Strip tracking junk, encode text, and build campaign URLs.
Strip tracking parameters from a URL
Strip utm_*, fbclid, gclid, and 40+ other tracking parameters from URLs. Runs locally in your browser.
Build a UTM campaign URL
Build a campaign URL with correctly encoded utm_source, utm_medium, utm_campaign, utm_term, and utm_content. Free, no signup.
URL encoder and decoder
Percent-encode or decode text for URLs. Runs in your browser with no request to a server.
YouTube
Timestamp links and thumbnail URLs — no upload, no account.
Content
Reading time, HTML to Markdown, and a bookmarklet maker.
Reading time calculator
Count words and estimate silent reading and speaking time using 238 wpm (research average), not a marketing 200 wpm.
HTML to Markdown converter
Convert pasted HTML into Markdown in your browser. Headings, links, lists, code, and emphasis — no upload.
Bookmarklet maker
Turn a small JavaScript snippet into a javascript: bookmark you can drag to the bookmarks bar. Encoded in the browser.
Ranked alternatives, including when Markwise is not the pick: /alternatives. Feature matrices: /compare.