Compress Images Without Losing Quality
Smart compression runs in your browser. Batch up to 50 files, no size limits. Compare before & after.
Drop your images here
Up to 50 images, no size limits
100% Private
Files never leave your device.
Before & After
Slide to compare. See the difference.
Works Offline
Install as PWA. No internet needed.
Batch + ZIP
Compress 50 files at once. ZIP download.
How Image Compression Works
Image compression reduces file size by removing redundant data while preserving visual quality. Lossless compression preserves every pixel exactly (typically 10-30% savings). Lossy compression achieves 50-90% savings by discarding information the human eye won't miss. Our tool finds the sweet spot where files shrink dramatically but you can't see the difference.
Why Compress Images?
- Faster websites: Images are 60%+ of most web pages. Smaller images = faster load times = better SEO.
- Email attachments: Many email servers reject files over 25MB. Compression makes images sendable.
- Save storage: Free gigabytes without deleting anything.
- Upload faster: Smaller files upload in seconds, not minutes.
Frequently Asked Questions
Is this really free?
Yes — completely free. No registration, no payment, no hidden limits. We support the site through advertising. The compression engine costs nothing to run because all processing happens on your device.
Do my files get uploaded?
No. All processing happens locally in your browser using the Canvas API. Your files never leave your device. Disconnect from the internet and the tool still works.
How much can I compress?
JPG and WebP images typically compress 50-85% at our default 80% quality setting. PNG images compress 10-30% losslessly, or much more when converted to lossy formats. Use the quality slider to find your balance.
What formats are supported?
Input: PNG, JPG, WebP, AVIF, GIF, BMP, and more. Output: Auto (keeps original format), PNG (lossless), JPG (smallest), or WebP (best compression-to-quality ratio).