JSON Formatter
Format, validate, and minify JSON locally in your browser.
Free Developer Tools
Free browser developer utilities—encoding, hashing, JWT inspection, regex, UUIDs, and more. Curated wowTools landing with local browser utilities—no account
Introduction
wowTools’s free developer tools cover the chores that interrupt coding: encode and decode strings, hash values, generate UUIDs and passwords, inspect JWTs, test regexes, and format JSON—without an account. This curated landing points to the essentials collection and flagship utilities so you can jump straight into local workflows.
Featured tools
Base64 Encode/Decode
Unicode-safe Base64 encode/decode for text and files locally.
JWT Decoder
Inspect JWT header and payload locally—no signature verify.
Hash Generator
SHA-256/512 hashing for text and files via Web Crypto.
UUID Generator
Generate UUID v4 and v7 IDs locally with bulk output.
Regex Tester
Test regex patterns with flags, highlights, and safe timeout protection.
Password Generator
Secure local password generator with strength meter.
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Frequently asked questions
- Are wowTools developer tools really free?
- Yes. The listed utilities are free to use in your browser. Ads and analytics remain off until a later consent-gated phase.
- Do I need to create an account?
- No. Favorites and optional history stay on your device when enabled.
- Which developer tool should I try first?
- If you work with APIs, start with JSON Formatter. For auth debugging, open JWT Decoder with sample tokens you own. For identifiers, try UUID Generator.
- Are my secrets uploaded?
- These tools are designed to process data locally. Sensitive tools keep history off until you opt in. Avoid shared computers when pasting production secrets.
- Where is the full list of developer tools?
- Browse the Developer category and the Developer Essentials collection for the curated set.