Free Developer Tools for Coding - 27 Utilities to Boost Productivity

A collection of essential tools for developers, designers, and creators. No signup required, 100% free.

Income Tax Calculator

Calculate take-home pay for UK & Ireland. Full breakdown of tax, NI, USC, and PRSI.

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Baggage Rules Checker

Check carry-on & checked baggage rules for 45+ airlines instantly.

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Internet Slow Diagnostic

Diagnose latency, jitter & packet loss — beyond just raw speed.

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AI Prompt Optimizer

Enhance prompts for ChatGPT & Midjourney instantly.

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Glassmorphism Generator

Generate trendy frosted glass CSS effects.

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Citation Generator

Create APA, MLA & Chicago citations for students.

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Image Optimizer

Compress images by up to 80% without losing quality.

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Regex Tester

Test and debug regular expressions with live matching.

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SQL Query Builder

Build and format SQL queries visually.

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API Response Tester

Test REST APIs and format responses.

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Markdown to PDF

Convert Markdown to beautifully formatted PDF documents.

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Code Minifier

Minify HTML, CSS, and JavaScript to reduce file size.

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XML Formatter

Format, minify, and validate XML documents.

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JWT Decoder

Decode and inspect JSON Web Tokens instantly.

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Diff Checker

Compare two text files and find differences.

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

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CSV to JSON

Convert CSV to JSON and vice versa instantly.

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JSON Formatter

Format and validate JSON data.

Base64 Converter

Encode and decode Base64 strings.

URL Encoder

Encode and decode URL components.

Cron Job Generator

Create cron expressions easily.

AI Code Explainer

Understand complex code snippets.

Password Generator

Generate secure, random passwords.

UUID Generator

Generate Version 4 UUIDs.

Lorem Ipsum

Generate placeholder text.

Color Converter

HEX, RGB, and HSL converter.

PX to REM

Responsive unit converter.