Syed Waleed
Developer Tools
Browse 21 developer tools. Choose a tool to get started.
Base64 Encoder/Decoder
Encode text to Base64 or decode it back.
Chmod Calculator
Chmod numeric and symbolic permissions, explained simply.
Color Contrast Checker
WCAG contrast ratio with AA/AAA pass-fail verdicts.
Cron Expression Generator
Build cron schedules visually, decode them too.
CSS Gradient Generator
Linear, radial & conic gradients with copy-ready CSS.
CSS Minifier
Compress and optimize CSS instantly — see exact bytes saved.
DNS Lookup Tool
Look up A, MX, TXT and more DNS records for any domain instantly.
Email Validator
Check email syntax, catch domain typos, and flag disposable inboxes.
Image to Base64 Converter
Images to base64: data URI, HTML tag & CSS snippet.
JSON Formatter & Validator
Format, validate and minify JSON instantly.
JSON to CSV Converter
Convert JSON to CSV instantly — nested objects, custom delimiters, live preview.
JWT Decoder
Decode JWT header, payload, expiry — verify HS256 signatures.
Markdown to HTML Converter
Markdown to clean HTML with live preview.
MD5 & SHA Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
PX to REM Converter
Convert px to rem and em for responsive CSS.
Regex Tester
Test patterns live, free.
SQL Formatter
Paste messy SQL and get clean, readable queries with consistent indentation and keyword casing.
Subnet Calculator
IP subnet math: network, broadcast, and host ranges
URL Encoder & Decoder
Encode or decode URLs and URI components instantly.
UUID Generator
Generate v4 and v7 UUIDs in bulk, right in your browser.
YAML to JSON Converter
Paste YAML or upload a .yaml file and get clean, pretty JSON instantly.
New tools to try
JSON Escape and Unescape
Escape plain text into a JSON string, or decode a JSON string safely.
XML Formatter
Format and validate XML while preserving text and CDATA.
JSON Compare
Compare two JSON documents by value, with readable difference paths.
URL Parser
Inspect URL components and every query parameter, including duplicates.
More tools for developer tools
See all 50 new tools ↗Base32 Encoder and Decoder
Encode UTF-8 text using RFC 4648 Base32.
Developer ToolsCSV Structure Preview
Inspect CSV rows, columns and quoted fields.
Developer ToolsHTML Entity Encoder and Decoder
Encode HTML special characters or decode character entities.
Developer ToolsJSON Key Extractor
List unique object property names throughout a JSON document.
Developer ToolsJSON Leaf Path Explorer
List the paths and values of JSON leaves.
Developer ToolsNumber Base Converter
Convert whole numbers between bases 2 through 36.
Developer ToolsText to Hex Converter
Convert UTF-8 text to hexadecimal bytes and back.
Developer ToolsUnicode Escape Converter
Convert text to JavaScript Unicode escapes and back.
Developer ToolsURL Query String Builder
Encode name/value lines into a URL query string.
Developer ToolsUTF-8 Byte Counter
Compare UTF-8 byte length, code points and UTF-16 units.
More useful developer tools
Browse the latest 100 ↗301 Redirect Rule Generator
Generate a conservative Apache Redirect directive for one path.
Developer ToolsNew · 8 NovCSS Border Radius Generator
Set each corner radius separately.
Developer ToolsNew · 8 NovCSS Box Shadow Generator
Create a reusable box-shadow declaration.
Developer ToolsNew · 8 NovCSS Button Generator
Create button markup and CSS with consistent spacing and focus styles.
Developer ToolsNew · 8 NovCSS Flexbox Generator
Build a clear flex container declaration from common options.
Developer ToolsNew · 8 NovCSS Grid Generator
Generate a responsive equal-column grid.
Developer ToolsNew · 8 NovFluid Font Size Clamp Generator
Generate a fluid CSS clamp between two viewport widths.
Developer ToolsNew · 8 NovHTML Heading Outline Checker
Inspect heading levels and spot skipped levels in HTML.
Developer ToolsNew · 8 NovHTML Link Extractor
Extract anchor destinations and link text from pasted HTML.
Developer ToolsNew · 8 NovHTML Meta Tag Inspector
Read titles, canonical links and meta tags from pasted HTML.
Developer ToolsNew · 8 NovHTTP Status Code Lookup
Look up standard HTTP status names and response classes.