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Developer Tools

JSON, SQL, HTML, regex & code tools

data_object

JSON Formatter

Format, validate & minify JSON data

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fingerprint

Hash Generator

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

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preview

Markdown Preview

Preview Markdown in real-time

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preview

Live Markdown Preview

Write Markdown with live side-by-side preview

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search

Regex Tester

Test regular expressions

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key

JWT Decoder

Decode JSON Web Tokens

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compress

CSS Minifier

Minify CSS code

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compress

JS Minifier

Minify JavaScript code

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compress

HTML Minifier

Minify HTML code

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schedule

Cron Parser

Parse cron expressions

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code

JSON to TS

Convert JSON to TypeScript interfaces

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database

SQL Formatter

Format and beautify SQL queries

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code

XML Formatter

Format, validate and minify XML

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swap_horiz

YAML to JSON

Convert YAML to JSON format

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swap_horiz

HTML to JSX

Convert HTML to React JSX syntax

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straighten

CSS Units Converter

Convert between px, em, rem, vh, vw, %

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info

HTTP Status Codes

Complete reference of HTTP status codes

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table_chart

Markdown Table

Generate Markdown tables from data

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grid_view

ASCII Table

Complete ASCII character reference

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translate

Unicode Lookup

Search and explore Unicode characters

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mark_email_read

Email Validator

Validate email address format

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credit_card

Credit Card Validator

Validate credit card numbers with Luhn algorithm

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link

URL Parser

Parse URL into components

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preview

HTML Preview

Live HTML preview in iframe

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terminal

JavaScript Runner

Run JavaScript code in browser

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preview

CSS Preview

Live CSS preview with HTML

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fact_check

JSON Validator

Validate and analyze JSON structure

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swap_horiz

Markdown to HTML

Convert Markdown to HTML code

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query_stats

JSONPath Tester

Test JSONPath expressions against JSON

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query_stats

XPath Tester

Test XPath expressions against HTML

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key

JWT Generator

Create JWT tokens with custom payload

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contrast

Color Contrast Checker

Check WCAG color contrast accessibility

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rule

CSS Specificity

Calculate CSS selector specificity

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commit

Git Cheatsheet

Common Git commands reference

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menu_book

Regex Cheatsheet

Regular expression syntax reference

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shapes

SVG Optimizer

Optimize and minify SVG code

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html

HTML Formatter

Format and beautify HTML code

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compress

JSON Minifier

Minify JSON by removing whitespace

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compress

XML Minifier

Minify XML by removing whitespace

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edit_note

Markdown Live

Live markdown editor with real-time preview

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account_tree

JSON Tree Viewer

View JSON as an expandable tree structure

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fact_check

YAML Validator

Validate YAML syntax and check for errors

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menu_book

Markdown Cheatsheet

Complete Markdown syntax reference

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swap_vert

HTTP Methods

HTTP methods reference (GET, POST, PUT, etc.)

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description

MIME Types

Look up MIME types by file extension

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share

OG Tag Preview

Preview Open Graph social media tags

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view_column

Flexbox Playground

Visual CSS flexbox builder with live preview

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settings_applications

.htaccess Generator

Generate Apache .htaccess rules for redirects and security

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dns

Nginx Config Generator

Generate Nginx server configuration files

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deployed_code

Docker Compose Generator

Generate docker-compose.yml files visually

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grid_view

CSS Grid Generator

Visual CSS Grid layout builder with code output

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compare

JSON Diff

Compare two JSON objects and find differences

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verified

JSON Schema Validator

Validate JSON data against a JSON Schema

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table_chart

HTML Table Generator

Create HTML tables visually with row/column editor

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translate

Regex to English

Translate regex patterns into plain English explanations

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select_all

CSS Selector Generator

Build CSS selectors visually and test them

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schedule

Crontab Generator

Build cron expressions visually with human-readable output

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calculate

CSS Specificity Calculator

Calculate CSS selector specificity scores

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preview

Open Graph Preview

Preview how your page looks when shared on social media

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code

Markdown to HTML Preview

Convert Markdown to HTML with live preview and copy output

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fact_check

Markdown Lint

Check Markdown files for common style issues and errors

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key

JWT Encoder

Create signed JWT tokens with HMAC-SHA256

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fact_check

Robots.txt Validator

Validate robots.txt syntax and check for errors

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flatten

JSON Flattener

Flatten nested JSON to dot-notation keys

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ads_click

CSS Cursor Reference

Preview all CSS cursor types with live demo

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brush

WordPress Theme Detector

Detect what WordPress theme a website uses

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monitor

Screen Resolution Simulator

Preview and compare common screen resolutions

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panorama

YouTube Banner Downloader

Get YouTube channel banner URLs and specs

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play_circle

YouTube Video Statistics

Extract video info and embed code from YouTube

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settings_applications

.htaccess Redirect Generator

Generate Apache .htaccess redirect rules

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build

YouTube Title Extractor

Extract video ID, thumbnails, and embed info from YouTube URLs

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build

YouTube Channel Search

Search YouTube channels with generated links and suggestions

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build

YouTube Channel Statistics

Analyze YouTube channel performance metrics and earnings

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build

URL Rewriting Tool

Generate Apache and Nginx URL rewrite rules

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build

Find Facebook ID

Extract numeric ID or username from Facebook profile URLs

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build

JavaScript Deobfuscator

Deobfuscate and beautify obfuscated JavaScript code

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About Developer Tools

JSON, SQL, HTML, regex & code tools. Our collection of 76 developertools is designed for developers, designers, and creators who need fast, accurate results. Every tool on this page runs entirely in your browser — your data is never uploaded to any server. Whether you're working on a quick conversion or processing complex data, these tools deliver professional-grade output instantly.

Why Use Our Developer Tools?

  • All developer tools process data locally in your browser — complete privacy
  • Instant results with no waiting for server responses
  • Works on any device: desktop, tablet, or mobile phone
  • Free forever with no usage limits or premium features

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