A toolkit for your everyday workflow
Developer tools,
right in your browser.
Fast, free tools for the small tasks that keep your work moving. No account, no install, no upload.
JSON
5 toolsJSON Formatter
Format, validate, and minify JSON in your browser. Choose two spaces, four spaces, or tabs for indentation.
Open tool JSONJSON Validator
Check JSON syntax and see a useful error location without sending your data to a server.
Open tool JSONJSON Minifier
Remove unnecessary JSON whitespace and compare original and minified sizes instantly.
Open tool JSONJSON ↔ YAML
Convert JSON to YAML or YAML to JSON locally in your browser.
Open tool JSONJSON ↔ CSV
Convert arrays of JSON objects to CSV and CSV tables back to JSON. Copy or download the result.
Open toolEncoding
1 toolsSecurity / Data
3 toolsJWT Decoder
Decode a JSON Web Token header and payload locally. Decoding does not verify the signature.
Open tool Security / DataUUID Generator
Generate random UUID v4 values with the browser Web Crypto API. Create one or many at once.
Open tool Security / DataHash Generator
Generate SHA-256, SHA-384, or SHA-512 digests from text or a local file using Web Crypto.
Open toolTime
1 toolsDevelopment
4 toolsRegex Tester
Test JavaScript regular expressions, inspect matching text, and review capture groups in your browser.
Open tool DevelopmentCron Expression Helper
Understand five-field Unix cron expressions with field explanations, common examples, and a plain-language summary.
Open tool DevelopmentText Diff
Compare two text blocks with an inline line-by-line diff. Text stays in your browser.
Open tool DevelopmentCase Converter
Convert text between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, lowercase, uppercase, and Title Case.
Open toolPrivate by design
Every tool runs in your browser. Your JSON, tokens, files, and text stay on your device and are not sent to our server.