Welcome to the Code Tower · 29 rooms
Developer Tools
Encoders, decoders, generators and formatters for everyday coding.
🔒 Every tool here runs in your browser · No upload
UUID GeneratorGenerate random UUID v4 / v7 identifiers in bulk.Base64 Encoder / DecoderEncode or decode text and files to and from Base64.URL Encoder / DecoderPercent-encode or decode URLs and query strings.JSON FormatterFormat, validate and minify JSON.Hash GeneratorCompute MD5, SHA-1, SHA-256/384/512, SHA-3, CRC32 and xxHash64 of text or files — even multi-GB files.JWT DecoderDecode JSON Web Token header and payload.Unix Timestamp ConverterConvert Unix timestamps to dates and back.Password GeneratorGenerate strong random passwords and passphrases, with strength check.Regex TesterTest regular expressions with live match highlighting and replace.Cron Expression ExplainerExplain crontab expressions in plain English and list next run times.Bcrypt Generator & CheckerHash passwords with bcrypt and verify hashes.TOTP / 2FA Code GeneratorGenerate and verify time-based one-time passwords from a secret.HTML Entity Encoder / DecoderEscape and unescape HTML entities.User Agent ParserParse a user-agent string into browser, OS and device.Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences or words.Fake Data GeneratorGenerate realistic test data as JSON, CSV or SQL.JSON to YAMLConvert JSON to YAML.YAML to JSONConvert YAML to JSON.JSON to XMLConvert JSON to XML.XML to JSONConvert XML to JSON.JSON to CSVConvert a JSON array to CSV, and CSV back to JSON.TOML ⇄ JSON ConverterConvert between TOML and JSON.XML FormatterPretty-print, minify and validate XML.JSON to TypeScriptGenerate TypeScript, Go, Python, Java, C# and Rust types from JSON.SQL FormatterFormat SQL for MySQL, PostgreSQL, SQLite and more.Code Formatter (Prettier)Format JavaScript, TypeScript, CSS, HTML, Markdown, YAML and GraphQL.JavaScript MinifierMinify JavaScript with Terser.CSS MinifierMinify and optimize CSS.HTML MinifierMinify HTML including inline CSS and JS.