Developer Tools
Format JSON, encode Base64, minify HTML/CSS, beautify JavaScript. Daily essentials for devs.
Developers live in a world of formats: JSON, Base64, JWT, hex, URL-encoded strings, regex patterns, and minified bundles. WebToolCenter's developer tools cover all of them — fast, locally, with zero data ever sent to a server. Format messy JSON from an API response, decode a JWT to inspect its claims, generate a UUID for a new database row, convert hex to RGB, validate a regex against sample input. The kind of utilities that live permanently in your bookmarks bar.
All Developer Tools
JSON Formatter
Format, validate, and minify JSON instantly.
Base64 Encoder / Decoder
Encode or decode Base64 — text and files.
HTML Minifier
Strip whitespace, comments, and reduce HTML size.
CSS Minifier
Compress CSS files for production performance.
JavaScript Beautifier
Format minified JavaScript back into readable code.
Hash Generator (SHA-1/256/384/512)
Generate cryptographic hashes for any text in your browser.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Regex Tester
Test regular expressions against any text with live match highlights.
Why these tools matter
Most dev work involves five-second tasks that interrupt flow: pretty-print this JSON, base64 this string, generate a UUID, decode this token. Having all of them one tab away — instead of in a CLI or a heavyweight IDE plugin — keeps you focused on the actual work.
100% client-side
Decode tokens and inspect payloads without worrying about sensitive data leaving your machine.
Instant feedback
Format-as-you-type for JSON, regex matching live as you edit, real-time previews everywhere.
No installs needed
Skip the npm-install dance for one-off conversions. Open the tab, paste, done.
Built by developers
Sensible defaults, dark mode, keyboard-friendly UI, and copy-on-click on every output.
Common use cases
- • Backend devs inspecting JWT tokens during debugging
- • Frontend devs formatting API responses
- • DevOps engineers generating secure secrets and UUIDs
- • QA testers validating regex patterns against test data
- • Anyone converting between Base64, hex, and binary
Frequently asked questions
Is it safe to paste production tokens?
Yes — all decoders run locally in your browser. Tokens, payloads, and secrets are never sent anywhere.
Do these tools work offline?
Once loaded, most tools continue to work even if your connection drops, because they're pure client-side JavaScript.
Can I integrate these into my own app?
These tools are meant for ad-hoc developer use. For programmatic use, every conversion has a well-known npm library.
Do you support YAML, TOML, and XML?
JSON is covered today. YAML, TOML, and XML formatters are on the roadmap.