Developer Tools

Decode and inspect JSON Web Tokens — view header, payload, and verify signature integrity.

Generate MD5, SHA-1, SHA-256, and other hash digests from any text or file input.

Encode and decode Base64 strings instantly — supports text, files, and URL-safe variants.

Write and test regular expressions with real-time matching, capture groups, and explanation.

Parse and validate cron expressions — see the next scheduled runs in a human-readable format.

Write Markdown and see a live-rendered preview — supports GFM, tables, and syntax highlighting.

Format, minify, and validate JSON with configurable indentation, depth stats, and error highlighting.

Compare two texts and see additions, deletions, and changes highlighted — line, word, or character level.

Look up any HTTP status code — meaning, usage, and when to use each response code.

Format, validate, and minify XML data with configurable indentation and error reporting.

Beautify and minify SQL queries with support for MySQL, PostgreSQL, T-SQL, and more.

Beautify and minify HTML, CSS, and JavaScript code instantly with configurable options.

Calculate IPv4 subnet details — network, broadcast, hosts, masks from CIDR notation.

Generate HTML meta tags, Open Graph, and Twitter Card tags with live SERP and social previews.

Compare two JSON objects and see structural differences — added, removed, and changed keys.

Generate time-based one-time passwords from Base32 secrets. Parse otpauth:// URIs with countdown timer.

See your public IP address and detailed browser, screen, and system information instantly.

Search and copy emojis. Unicode code points, HTML entities, and shortcodes included.

Minify CSS code by removing whitespace, comments, and redundant syntax for smaller file sizes.

Minify HTML by removing whitespace, comments, and optional tags to reduce page load times.

Minify JavaScript code with variable mangling, dead code removal, and compression.

Minify JSON by removing all whitespace and formatting for compact data transfer.

Format and validate YAML with configurable indentation, sorting, and error detection.

Check foreground and background color contrast against WCAG 2.1 AA and AAA accessibility standards.

Analyze text readability with Flesch-Kincaid scores, grade levels, and detailed text statistics.

Parse any URL into its components — protocol, host, port, path, query parameters, and hash.

Search and replace text with regex support, case-sensitive matching, and batch processing.

Escape and unescape strings for JSON, HTML, SQL, URL, and more formats.

Strip extra spaces, tabs, line breaks, and trailing whitespace from text.

Repeat any text or string a specified number of times with custom separators.

Remove HTML tags, fix encoding issues, normalize whitespace, and clean up text.

Apply ROT13 cipher to encode or decode text instantly.

Convert between symbolic and numeric Unix file permission formats.

Hash passwords with bcrypt and verify existing hashes online.

Create HMAC signatures using SHA-256, SHA-384, SHA-512, and more.

Validate TOML syntax and format your configuration files.

Create and format Markdown tables with a visual editor.

Evaluate JSONPath expressions against JSON data and see results instantly.

Validate JSON data against a JSON Schema definition.

Create and sign JSON Web Tokens with custom claims and algorithms.