Free Developer Tools
Free browser developer utilities—encoding, hashing, JWT inspection, regex, UUIDs, and more.
Introduction
ToolHub’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
JSON Formatter
Format, validate, and minify JSON locally in your browser.
- json
- formatter
- validator
- developer
Base64 Encode/Decode
Unicode-safe Base64 encode/decode for text and files locally.
- base64
- encode
- decode
- developer
JWT Decoder
Inspect JWT header and payload locally—no signature verify.
- jwt
- token
- decode
- security
Hash Generator
SHA-256/512 hashing for text and files via Web Crypto.
- hash
- sha256
- sha512
- checksum
UUID Generator
Generate UUID v4 and v7 IDs locally with bulk output.
- uuid
- guid
- random
- generator
Regex Tester
Test regex patterns with flags, highlights, and safe timeout protection.
- regex
- developer
- pattern
- replace
Password Generator
Secure local password generator with strength meter.
- password
- security
- random
- generator
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Frequently asked questions
- Are ToolHub 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.