All Tools
27 developer tools, all free and running locally in your browser.
4
2
Base64 Encode/Decode
Encode text to Base64 or decode Base64 to textURL Encode/Decode
Encode or decode URL components and full URLsJWT Decoder
Decode and inspect JSON Web Tokens (JWT). View the header, payload, and expiry information without verification.Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text inputHTML Entity Encode/Decode
Encode special characters to HTML entities or decode HTML entities back to charactersRegex Tester
Test and debug regular expressions with real-time match highlighting and named group supportMarkdown Preview
Live markdown editor with instant HTML preview. Supports GitHub Flavored Markdown including tables, task lists, and fenced code blocks.Text Diff
Compare two blocks of text line by line and highlight additions, removals, and unchanged linesTimestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds, milliseconds, ISO 8601, and relative time formats.Cron Parser
Parse and explain cron expressions. See a human-readable breakdown of each field, a plain-English summary, and the next scheduled run times.Color Converter
Convert between HEX, RGB, and HSL color formats. Automatically detects input format and shows all conversions with a live color preview.Number Base Converter
Convert numbers between Decimal, Hexadecimal, Octal, and Binary bases. Supports large numbers via BigInt and validates input digits for each base.3
3
1