Free Online Toolbox
15 handy tools for images, text, encoding, passwords, dates and units. Everything runs locally in your browser — your data is never uploaded, fast and secure.
All Tools
Image
Image Compressor
Compress JPG, PNG and WebP images online by up to 90% with almost no visible quality loss.
Image Resizer
Resize images by pixels or percentage, with aspect-ratio lock and size presets.
Image Cropper
Crop images online with free or fixed aspect ratios (1:1, 4:3, 16:9 and more).
Watermark Image
Add text or logo watermarks with 9-grid positioning, tiled pattern and opacity control to protect your copyright.
Text
Encode
Utilities
QR Code Generator
Create QR codes for URLs, text, WiFi and contacts, with custom colors and sizes.
Password Generator
Create strong random passwords with custom length and character sets, generated locally.
Date Calculator
Find the days between two dates, or add and subtract days from any date.
BMI Calculator
Calculate your Body Mass Index from height and weight, with healthy-range reference.
Unit Converter
Convert length, weight and temperature units — meters to feet, kg to pounds, °C to °F.
Why Choose ImgToolBox?
Privacy First
All processing happens locally in your browser. Your images are never uploaded to any server.
Fast & Efficient
No uploading or downloading waits — local processing is instant and supports batch workflows.
100% Free
All tools are free forever, no sign-up required, no watermarks.
Guides & Tips
How to Compress Images Without Losing Quality (2026 Guide)
Learn how to compress JPG, PNG and WebP images to the smallest file size with minimal quality loss. Quality settings, format choice and per-scene recommendations — all explained simply.
PNG vs JPG vs WebP: Which Image Format Should You Use?
A complete comparison of PNG, JPG and WebP: compression, transparency, file size and best use cases — so you always save images in the right format.
How to Watermark Photos to Protect Your Copyright
Stop image theft: where to place watermarks, the ideal opacity, tiled and diagonal patterns that can't be cropped out, plus a free way to watermark photos online.
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