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Text & data tools
JSON formatter, Base64, URL encoder, hash / UUID / password generators, case converter, Markdown preview, diff.
100% client-side processing
Works offline once loaded
Commercial use OK
Free forever
13 tools
JSON Formatter & Validator
Format, validate and pretty-print JSON in your browser.
Base64 Encoder
Encode text to Base64 with full UTF-8 support.
Base64 Decoder
Decode Base64 back to text with full UTF-8 support.
URL Encoder
Percent-encode strings for safe use in URLs and query strings.
URL Decoder
Decode percent-encoded URL strings back to readable text.
Word & Character Counter
Count words, characters, sentences, paragraphs and reading time.
Lorem Ipsum Generator
Generate placeholder text — words, sentences or paragraphs.
UUID Generator
Generate UUID v4 identifiers — single or bulk.
Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text.
Password Generator
Generate strong random passwords with cryptographic randomness.
Text Case Converter
Convert text between lower, UPPER, Title, Sentence, camelCase, PascalCase, snake_case and kebab-case.
Markdown Preview
Live Markdown to HTML preview with CommonMark + GFM support.
Text Diff Checker
Compare two blocks of text with word-by-word diff highlighting.