The Ultimate Developer Utility Suite
Format, validate, and convert data instantly in your browser—100% client-side and blazing fast. Privacy-focused tools for modern engineers.
Most Popular
View all categoriesJSON Formatter
Make messy, minified JSON readable with customizable indentation.
JSON Validator
Check JSON validity with precise line/column errors.
Base64 Decoder
Decode Base64 text back to readable Unicode instantly.
URL Encoder
Safely percent-encode text for use in URLs and query strings.
JSON to YAML
Convert JSON documents to clean, indented YAML.
JSON to XML
Convert JSON into well-formed XML markup.
JWT Decoder
Inspect JWT header, payload, and signature with syntax highlighting.
Your data never leaves your browser
Paste a production config, a customer record, a legal contract, a secret key — whatever you're working with. It's processed locally and never transmitted, so there's nothing to intercept, log, or leak in the first place.
Zero network requests
Every format, validate, convert, and decode operation runs entirely in your browser. Nothing you paste is ever sent anywhere — there is no server-side processing of tool content to send it to.
We literally can't see it
This isn't a policy we could quietly change later — it's how the site is built. No API, no backend, no logging pipeline exists to receive what you paste, so there's nothing for us (or anyone else) to see.
No accounts, nothing stored
No sign-up, no login, no database. Your theme preference is the only thing saved locally in your own browser — never your data.
Blazing Fast
Optimized algorithms powered by Web Workers ensure UI responsiveness, even on massive inputs.