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Free Developer Tools | Discover curated free developer tools, converters, generators, and utilities to enhance your development workflow. Find the best tools for web development, programming, and software engineering.

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100% Free - Essential Tools for Developers

Featured Tools

LLM API Pricing Calculator

Calculate and compare costs for different LLM providers and models. Estimate your AI API expenses based on token usage.

aiOpen Tool

JSON Formatter Validator

Format, validate, and beautify JSON data. Minify JSON or convert between JSON and other formats.

text dataOpen Tool

Base64 Encoder Decoder

Encode text, strings, or files to Base64 format, or decode Base64 strings back to their original content.

text dataOpen Tool

UUID Generator

Generate random UUIDs (v4) or create UUIDs based on namespaces (v5). Copy with one click.

generatorsOpen Tool

Password Generator

Generate secure, random passwords with customizable length and character types.

generatorsOpen Tool

Hash Generator

Generate MD5, SHA-1, SHA-256, and other hash values for text or files. Compare hashes for verification.

securityOpen Tool

Categories

Discover curated free developer tools, converters, generators, and utilities to enhance your development workflow.

AI & LLM Tools

Database & Backend

Design & Visual Utilities

DevOps & Cloud

Framework Specific

Frontend & CSS

Generators & Randomizers

JavaScript & Code

Security & Hashing

SEO & Social Media

Text & Data Formatters

Latest Additions

Aspect Ratio Calculator
Base64 Encoder Decoder
Binary/Decimal Converter
Box Model Visualizer
Box Shadow Generator
Canonical Tag Generator
Character Encoding Converter
Checksum Calculator
Chmod Calculator
CIDR Calculator
Clamp() Calculator
Code Block Comparator
Color Contrast Checker
Color Picker Converter
Cron Expression Editor
CSS Triangle Generator
CSS Variables Generator
CSV Column Analyzer
CSV to SQL Insert
Curl to Fetch Converter
Cursor CSS Previewer
Date Calculator
Email Obfuscator
Emoji Picker
ENV File Generator
Fake User Generator
Favicon Generator
File Size Calculator
Gitignore Generator
Glassmorphism Generator
Gradient Generator
Hash Generator
HTAccess Redirect Generator
HTML Beautifier
HTML Entity Encoder
HTTP Header Parser
HTTP Status Reference
JSON Formatter Validator
JSON Path Finder
JSON Schema Generator
JSON to CSV Converter
JSON to TypeScript Interface
JSON to Zod Schema
JWT Decoder
License Header Generator
LLM API Pricing Calculator
Lorem Ipsum Generator
Markdown to HTML Converter
Meta Tag Generator
MIME Type Finder
Minifier (JS/CSS)
MongoID Generator
Morse Code Translator
Neumorphism Generator
Next.js Config Validator
Number Base Converter
Open Graph Preview
Package.json Validator
Password Generator
Percentage Calculator
Pixel to REM Converter
Placeholder Image Generator
Port Number Reference
QR Code Generator
Random Number Generator
React Hooks Generator
Robots.txt Generator
Roman Numeral Converter
Schema Markup Generator
Shadcn Theme Generator
Slug Generator
SQL Formatter
SQL to JSON Converter
String Case Converter
SVG Optimizer
SVG Pattern Maker
Text Diff Checker
TODO Comment Extractor
Token Counter Visualizer
Twitter Thread Preview
Unix Timestamp Converter
URL Encoder/Decoder
User Agent Parser
UTM Builder
UUID Generator
Viewport Size Checker
Word Counter
XML Formatter
XML Sitemap Generator
YAML to JSON Converter

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