Tools that run in your browser.

No accounts, no uploads, no waiting. Open, use, done.

Private by design

Data & code

JSON Formatter & ValidatorPretty-print, validate, and minify JSON instantly.CSV to JSON ConverterConvert CSV to JSON with automatic delimiter detection.Base64 Encode / DecodeEncode and decode Base64 with full UTF-8 support.URL Encode / DecodePercent-encode or decode URLs and query strings.Unix Timestamp ConverterConvert Unix epochs to human dates and back.JSON ↔ YAML ↔ TOML ConverterConvert between JSON, YAML, and TOML in any direction.JWT DecoderDecode a JWT’s header, payload, and expiry instantly.Regex TesterTest JavaScript regular expressions with live highlighting and groups.Cron Expression ParserExplain any crontab schedule and preview its next run times.Number Base ConverterConvert between binary, octal, decimal, hex, and any base up to 36.HTML Entity Encoder / DecoderEscape or unescape HTML entities instantly as you type..env ↔ JSON ConverterConvert dotenv files to JSON and back, quotes and comments included.

Text

Case ConverterUPPER, lower, Title, camelCase, snake_case, kebab-case.Word CounterWords, characters, sentences, and reading time — live.URL Slug GeneratorTurn any title into a clean, SEO-friendly URL slug.Remove Accents from TextStrip accents and diacritics: á→a, ñ→n, ü→u.Text Diff CheckerCompare two texts line by line and spot every change.Remove Duplicate Lines & SortDeduplicate, sort, shuffle, and clean up any list of lines.Markdown to HTML ConverterConvert Markdown to clean HTML with a live, sandboxed preview.

Generators

Hash Generator (SHA-256, SHA-512)Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes.UUID GeneratorGenerate one or hundreds of random UUIDs (v4).Password GeneratorStrong random passwords, generated locally.QR Code GeneratorCreate QR codes locally — no tracking, no expiration.Lorem Ipsum GeneratorGenerate placeholder text by paragraphs, sentences, or words.Mock Data GeneratorGenerate realistic fake data as JSON, CSV, or SQL.

Web & design

Color Converter (HEX, RGB, HSL)Convert any CSS color between HEX, RGB, and HSL with a live preview.Color Palette ExtractorPull the dominant colors from any image — right in your browser.Meta Title & Description CheckerCheck title and description length in pixels, with a live Google preview.User-Agent ParserDetect browser, engine, OS, and device from any user-agent string.