toolspace

Free, open source developer tools that run in your browser

#3 in Developer tools
Developer tools
Productivity
Utilities
Free
Launched 31 Oct 2026

Verified clicks, 30 days: 0
Votes: 0
Score: 14.9 pts
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About

toolspace is a collection of everyday developer tools for working with text, data and code. It includes a diff checker, JSON tools (formatter, validator, diff, converter), encoders and decoders (Base64, URL, JWT, HTML entity), text tools (word counter, case converter, slug generator), code tools (beautifier, regex tester), generators (QR codes, passwords, UUIDs, mock data), and utilities for colors, images, web metadata and networking.

Every tool runs entirely in your browser. When you paste text, open files, or work with tokens and passwords, the processing happens in your tab and never leaves your device. Most tools keep your last input in browser storage for convenience, and you can clear it with the Forget Input button. Files are read locally and never uploaded. Share links encode input in the URL fragment, which browsers don't send to servers.

The site works offline after your first visit. There is no account to create, no login required, and no usage limits. The code is MIT licensed and available on GitHub.

Toolspace sets itself apart by running entirely in your browser with no server uploads, no account required and no usage limits. Every tool processes data locally on your device, so passwords, tokens and sensitive text never leave your computer. The site works offline after the first visit, and share links keep input in the URL fragment that browsers don't transmit to servers. Being free and open source under the MIT license, with over 50 developer tools from diff checkers to regex testers, it offers a self-contained alternative to web services that require logins or store your data.

Problem: Developers often need quick access to encoding, formatting, and conversion tools, but many online tools require accounts, upload files to servers, or have usage limits.
Solution: toolspace provides 50+ free tools that run locally in your browser, process data without uploading, and require no account or login.

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