Free Online Image Tools
Compress images to any file size, convert between JPG/PNG/WebP, crop, resize, and rotate — all in your browser. 100% free, no upload, no signup.
Drop your image here
or click to browse · Supports JPEG, PNG, WebP, GIF, BMP, TIFF
Or try a sample image
Landscape
Portrait
Food
Gradient
100% Private
Your images never leave your browser. No upload, no servers, no tracking.
Image Compressor
Compress JPEG, PNG, WebP to exactly 1MB, 500KB, 200KB, or any size. Smart binary search algorithm.
Crop & Resize
Crop any area with drag selection. Resize to exact dimensions with aspect ratio lock.
Your Complete Online Image Toolkit
CompressIO is a free, browser-based image processing suite. No matter what you need to do with your images — compress them to a specific file size, convert between formats, crop out unwanted areas, resize dimensions, or rotate at any angle — you can do it all here. Every tool runs 100% in your browser, so your files never leave your computer.
All Tools at a Glance
- Image Compressor — Reduce image file size to exactly 1MB, 500KB, 200KB, or 100KB using smart binary search
- Format Converter — Convert between JPG, PNG, and WebP formats instantly
- Image Cropper — Drag to select and crop any area of your image
- Image Resizer — Change dimensions to any width and height with aspect ratio lock
- Image Rotator — Rotate by any angle with quick presets for 90°, 180°, and 270°
Why Use Browser-Based Image Tools?
Traditional online image editors require uploading your files to a server, which raises privacy concerns and imposes file size limits. Our tools process everything locally using HTML5 Canvas and JavaScript — your images stay on your device. This means unlimited file sizes, instant processing, and zero privacy risk.
Common Use Cases
- Website optimization — Compress and resize images for faster page loads and better SEO
- Email attachments — Reduce image sizes to fit within email attachment limits
- Social media — Convert, resize, and crop images to each platform's specifications
- E-commerce — Prepare product images with consistent dimensions and formats
- Personal projects — Edit photos for printing, sharing, or archiving
Frequently Asked Questions
No! All image processing happens entirely in your browser using JavaScript. Your images never leave your computer. This means it's 100% private and secure — ideal for sensitive or personal photos.
CompressIO includes five free image tools: Image Compressor (compress to exact file size), Format Converter (JPG/PNG/WebP), Image Cropper (drag-select crop), Image Resizer (custom dimensions), and Image Rotator (any angle).
The compressor uses a binary search algorithm to find the optimal quality level. It typically hits within 2% of your target size. Choose from 100KB, 200KB, 300KB, 500KB, 1MB, 2MB, or 5MB targets.
You can upload JPEG, PNG, WebP, GIF, BMP, and TIFF files. The compressor and format converter output in the format you choose (JPEG, PNG, or WebP).
No! Since everything runs in your browser, there are no server-side limits. The only limit is your computer's memory. Most modern browsers can handle images up to 100MB without issues.