6 free tools · run in your browser
Developer Tools
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Developer Tools
All developer tools
6 tools
UUID Generator
Generate version 4 (random) or version 7 (time-ordered) UUIDs in bulk, and inspect any UUID's version, variant, and embedded timestamp.
Open toolUnix Timestamp Converter
Convert Unix timestamps (seconds, milliseconds, microseconds or nanoseconds) to and from dates in any time zone, with exact precision and full DST handling -- all in your browser.
Open toolJWT Decoder
Decode a JWT's header and payload, check its expiry and issuer/audience claims, and verify its signature (HS/RS/PS/ES256-512 or EdDSA) -- entirely in your browser, nothing sent to a server.
Open toolRegex Tester
Test a JavaScript regular expression against your own text: live highlighted matches, a numbered/named capture-group table, and a replace preview -- all in your browser, with a built-in 1-second timeo
Open toolHash Generator
Hash text with MD5, SHA-1, SHA-256, SHA-384 and SHA-512 at once, or compute an HMAC with a key -- all in your browser.
Open toolHMAC Generator
Compute an HMAC of a message with a secret key (SHA-256/1/384/512 or MD5), and check a received webhook signature from GitHub, Stripe or Shopify -- all in your browser.
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Runs on your device
The work happens in your browser. Nothing you type or upload is sent to us.
No account needed
Open a tool and use it. No sign-up, no email, no waiting.
Works everywhere
Phone, tablet or desktop, in any modern browser.
About Developer Tools
Developer Tools on Toolipi are built for quick, repeatable browser workflows. Each utility has a clean URL, focused metadata, structured data, and a mobile-friendly interface so users and search engines can understand exactly what the page does.
Most tools process input directly in the browser for speed and privacy. Bookmark this category to keep the full developer tools collection close at hand.
Need something else?
More free tools across 9 categories, all running in your browser.