Developer tools
Small, fast utilities for everyday development work. Everything runs in your browser, so your data never leaves your machine.
JSON
JSON Formatter & Validator
Paste JSON to pretty-print it, validate it or minify it. Errors point to the exact line and column, and nothing you paste ever leaves your browser.
JSON Validator
Paste JSON to check whether it is valid. If it is not, you get a plain-language error with the line and column where parsing failed.
JSON Minifier
Paste JSON to strip every unnecessary space and line break. The data is unchanged, and invalid JSON is reported with its line and column.
Encoders & Decoders
Text & String Utilities
Text Diff Checker
Paste an original and a modified text to see line-by-line differences, with the changed words highlighted inside each changed line.
Case Converter
Type or paste text and see it in every common case at once, from Title Case to camelCase and snake_case. Copy the one you need.
Word & Character Counter
Paste or type text to count words, characters, sentences, paragraphs and lines, with reading time, top words and character limit checks.