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Image Cropper

Crop images visually with aspect ratio presets and social media sizing.

QR Code Generator

Generate QR codes from text, URLs, emails, or phone numbers with custom colours and sizes.

JSON Formatter

Format, beautify, and minify JSON data instantly in your browser.

Password Generator

Generate strong, random passwords with customisable length and character sets.

PNG to JPG Converter

Convert PNG images to JPG format instantly in your browser.

What Is My IP

Discover your public IP address with ISP, location, and timezone details.

Word Counter

Count words, characters, sentences, and paragraphs with reading time estimates.

Colour Contrast Checker

Check WCAG colour contrast ratios between foreground and background colours instantly.

Base64 Encoder/Decoder

Encode or decode Base64 strings in real time, entirely in your browser.

Image Compressor

Compress PNG, JPG, and WebP images to reduce file size without losing clarity.

Timezone Converter

Convert times between timezones and compare up to four zones side by side.

Categories

Image Tools 7
Image Cropper PNG to JPG Converter WebP Converter JPG to PNG Converter Image Compressor EXIF Remover +1 more
Text Tools 2
Word Counter Lorem Ipsum Generator
Developer Tools 8
JSON Formatter Base64 Encoder/Decoder UUID Generator Hash Generator HTTP Status Code Reference Cron Expression Generator +2 more
Security & Privacy 2
Password Generator Password Breach Checker
Math & Numbers 25
Fraction Calculator Ratio Calculator Exponent & Power Calculator Square Root Calculator Logarithm Calculator GCD & LCM Calculator +19 more
Time & Date 6
Timezone Converter Date Difference Calculator Age Calculator Countdown Timer Stopwatch Pomodoro Timer
Colour Tools 2
Colour Contrast Checker Colour Picker
Data & Files 1
QR Code Generator
Finance 4
Mortgage Calculator Loan Calculator Compound Interest Calculator Tip Calculator
Network & IP 9
What Is My IP WebRTC Leak Checker Subnet Calculator MAC Address Generator DNS Lookup MX Lookup +3 more
Calculators 1
BMI Calculator

From the blog

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developer

Best Free Online Developer Tools in 2026

A curated list of the best free browser-based developer tools for 2026. JSON formatters, regex testers, hash generators, UUID tools, and more — all running in your browser.

 calculators

BMI Calculator: How to Calculate and Understand Your Body Mass Index

Calculate your BMI instantly with our free online calculator. Learn what BMI means, its categories, limitations, and when to consult a doctor.

 image

Convert Images to WebP Format (And Why You Should)

Learn why WebP is the best image format for the web. Convert PNG and JPG to WebP instantly. Compare file sizes, quality, and browser support across all major formats.

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87+ free online tools for developers, designers, and anyone who needs to get things done. Every tool runs in your browser — your data never leaves your device.

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