Developer & Webmaster Tools

Format, prettify, or minify JSON data.

Compress your HTML code to reduce file size.

Minify your CSS stylesheets to optimize rendering.

Minify your JavaScript code to reduce payload size.

Parse a URL into its constituent parts (protocol, host, path, params).

Decode JSON Web Tokens securely in your browser.

Test regular expressions against target text.

View raw server HTTP response headers for any URL.

Detect tech stack, web server, and underlying OS of a site.

Check the SEO and ranking metrics for a specific domain.

Analyze all internal and external links on a webpage.

Simulate how your site appears in Google search results.

Encode or decode HTML entities in text.

Calculate Unix file permission values visually.

Build cron expressions visually with plain English descriptions.

Generate random UUIDs (v4) for development and testing.

Query JSON data using dot notation paths.

Beautify and format SQL queries for readability.

Convert JSON to YAML format and back.

Convert HTML code to Markdown format.

Generate .htaccess rules for redirects, caching, compression.

Calculate subnet mask, network, broadcast, and host range.

Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes.

Calculate download speed from file size and time.

Calculate file transfer time based on connection speed.

Generate markdown table syntax with rows and columns.

Quick reference for common regex patterns.

Minify JSON by removing whitespace.

Paste CSV data and view as formatted table.

Quick reference for HTML entities with copy.

Quick reference for HTTP status codes.

Escape strings for JSON, HTML, URL, CSV, Regex.

Convert JSON arrays to CSV format.

Calculate network, broadcast, host range from CIDR.

Quick reference for DNS record types.

Write markdown with live HTML preview.