Every developer has that collection of "I know there's a tool for this" moments. Here are five free, no-signup tools I use constantly — all at tooly.work:
- Regex tester — write a pattern, paste test strings, see matches live with capture groups highlighted. Saves the "deploy to production to test my regex" workflow.
- JSON formatter & validator — paste messy API output, get clean formatted JSON with syntax checking. Works offline in the browser.
- UUID generator — bulk-generate UUIDs (v4) for test data, with count and format options.
- SHA-256 / hash tools — generate hashes for API signatures, webhooks and file checksums without installing anything.
- Base64 encoder/decoder — for when you're debugging tokens or embedding data in URLs.
The whole toolkit is 53+ free tools and counting — no signup, no tracking, files stay in your browser. If there's a tool you wish existed, the contact page is open.
I'm the founder of Tooly — free online work tools for freelancers & small businesses. 53+ free tools, no signup, your data stays yours.
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