PureMark

8 free browser tools. No signup. Nothing leaves your browser

1 follower

8 free browser tools. No signup. Nothing leaves your browser

1 follower

8 browser-based developer tools. No signup, no install, nothing leaves your browser. - Annotate: arrows, text, shapes, blur on screenshots - JSON Formatter: auto-format via clipboard - Diff Checker: side-by-side/unified - Base64 / URL Encoder-Decoder - Timestamp Converter - JWT Decoder - Chrome Extension: auto-detect formats Everything runs locally. Privacy is the architecture.

Free

Launch tags:Productivity•Privacy•Developer Tools

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Maker

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Hey everyone! I'm Tommy, a solo developer from Japan. I built PureMark because I was tired of pasting sensitive data — JWTs, API responses, Base64 strings — into random online tools without knowing where it goes. PureMark processes everything locally in your browser. Nothing is ever sent to a server. No accounts, no tracking, no friction. It started as a simple JSON formatter, and grew into a suite of 8 tools over the past 2 months. The Chrome extension even auto-detects data formats on any page you visit. Would love to hear your feedback — what tools do you reach for daily that you wish were more privacy-respecting?

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7mo ago

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