Reduce image file size with optimized compression.
Resize images by exact pixels, percentage, or fit box.
Crop an image by drawing a custom bounding selection.
Rotate or flip images vertically/horizontally in-browser.
Remove image backgrounds automatically and 100% locally.
Image Compressor Tool: Reduce File Size Without Quality Loss: practical Tools guide with use cases, quality checks, and next steps on AltFTool.
1,100+ browser utilities for files, images, text, data, and more.
Set a page weight budget, subtract code and fonts, and see how many images of a given size and format still fit.
Reduce file size dramatically while keeping crisp quality. Batch process and compare before/after instantly.
Work out amp-img dimensions, retina source sizes and estimated file weight against the 200 KB AMP for Email limit.
Compare learning platforms and build skills.
Finance, health, math, and everyday calculators.