Image Compressor
Compress images to reduce file size while maintaining visual quality.
100% Client-Side • Privacy ProtectedDrop an image here or click to select
Supports JPEG, PNG, WebP
Features
- Compress JPEG, PNG, and WebP images with smart optimization
- Set target file size in KB for precise control
- Optional maximum width to resize large images
- Preview compressed result with before/after comparison
- Zero-knowledge processing — your images stay on your device
How to Use the Image Compressor
- 1Drop an image file into the upload area or click to select from your device
- 2Optionally set a target file size (KB) or maximum width (px)
- 3Click "Compress" to start compression
- 4Compare original and compressed sizes, then click "Download" to save
Frequently Asked Questions
How does the compression work?
It automatically reduces file size by adjusting image quality and resolution — similar to how Instagram compresses photos when you upload them. For JPEG and WebP, we use "lossy" compression (some quality loss, much smaller file). For PNG, we use "lossless" compression (no quality loss, smaller savings). Technical note: We use browser-native APIs + the browser-image-compression library, all running in your browser.
Will compression affect image quality?
Some quality loss is inherent in lossy compression (JPEG, WebP), but the algorithm is designed to maintain visual quality as much as possible. For typical web use, the difference is usually imperceptible. PNG compression is lossless — quality is preserved.
Is there a file size limit?
There's no hard limit. The tool works well with images up to about 50MB. All processing happens in your browser, so larger images may take a bit longer. Most web images (under 10MB) compress in seconds.