Free Developer Tools
Fast browser utilities for developers, webmasters and creators.
Format & Convert
JSON Formatter
Format, validate and minify JSON instantly.
Format →Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
Encode →URL Encoder / Decoder
Encode or decode URL components safely in your browser.
Encode →JSON XML Converter
Convert JSON to XML and XML to JSON.
Convert →JSON CSV Converter
Convert JSON arrays to CSV and CSV to JSON.
Convert →HTML Encoder Decoder
Encode and decode HTML entities instantly.
Encode →Timestamp Converter
Convert Unix timestamps to readable dates and back.
Convert →Code & Text
HTML Minifier
Minify HTML by removing unnecessary whitespace and comments.
Minify →HTML Validator
Validate HTML and find markup errors, warnings and common page issues.
Validate →CSS Minifier
Reduce CSS size by removing comments and extra whitespace.
Minify →JavaScript Minifier
Lightly minify JavaScript for quick browser-based optimization.
Minify →SQL Formatter
Format common SQL statements for easier reading.
Format →Code Beautifier
Beautify HTML, CSS and JavaScript for easier reading.
Beautify →Markdown Previewer
Preview common Markdown formatting in your browser.
Preview →Diff Checker
Compare two texts line by line and find differences.
Compare →Regex Tester
Test regular expressions with live matches and flags.
Test →Web & HTTP
HTTP Status Code Checker
Check the HTTP response status of a public URL.
Check →HTTP Header Analyzer
Inspect and analyze HTTP response headers from a public URL.
Analyze →User-Agent Parser
Parse browser, operating system and device hints from a user-agent string.
Parse →URL Parser
Parse a URL into protocol, host, path, query and other components.
Parse →URL Shortener
Turn long URLs into short eko24.net links for easier sharing.
Shorten →Open Graph Preview
Preview Open Graph title, description and image from a public webpage.
Preview →Redirect Checker
Follow 301, 302 and other redirects to inspect the full redirect chain.
Check →Link Extractor
Extract and separate internal and external links from any public webpage.
Extract →DNS Propagation Checker
Check DNS records across Google, Cloudflare and the server resolver.
Check →Website Technology Checker
Detect visible CMS, server, CDN, analytics and frontend technology clues.
Check →Website Performance Checker
Check website speed, Lighthouse performance and Core Web Vitals for mobile or desktop.
Check →Website Screenshot Tool
Capture desktop, tablet or mobile screenshots of public webpages.
Capture →Robots.txt Generator
Create a robots.txt file for search engine crawlers.
Generate →Htaccess Generator
Generate common .htaccess rules for Apache websites.
Generate →Schema Markup Generator
Create structured data markup for common schema types.
Generate →Generators & Security
UUID Generator
Generate random UUID v4 identifiers instantly.
Generate →JWT Decoder
Decode JWT header and payload locally in your browser.
Decode →Hash Generator
Generate SHA-256, SHA-384 and SHA-512 hashes locally.
Generate →Cron Expression Generator
Build common cron expressions quickly.
Generate →Unix Permissions Calculator
Convert chmod numbers and rwx permissions.
Calculate →QR Code Generator
Generate a QR code from text or a URL.
Generate →