Compress Images Online, Free and Private
Our image compressor shrinks JPG, PNG, WebP and AVIF files without uploading anything. Everything runs on your own device using the HTML5 Canvas API, so your photos stay exactly where they belong - on your computer. You can set the output format, choose a quality level, cap the maximum width, or use the auto-fit button to find the quality that hits a specific target file size.
When to compress an image
- Shrink photos before emailing them or sending them by messenger.
- Reduce file size so pages and galleries load faster.
- Meet upload limits on forms, stores, and portals.
- Free up storage space while keeping images usable.
Tips for the best results
- Use WebP or AVIF for photos and graphics - they give the best size-to-quality ratio.
- Use PNG when you need transparency.
- For screens, quality 70-85 usually looks identical to the original at half the size.
- Cap the width at the largest size the image will ever be displayed at.
Compression never touches your original file. You always download a new, optimized copy, and nothing is stored on any server. See our About page to learn how we keep Image Tools private by design.