Image Compressor
Compress JPEG, PNG, and WebP images instantly in your browser — private, free, no upload needed.
Drop images here or browse files
JPEG · PNG · WebP · GIF — max 30 MB each
How to Compress Images Online — Free & Private
This tool reduces image file sizes by re-encoding them at your chosen quality using your browser's built-in Canvas API. No image is ever uploaded to a server — everything runs locally on your device.
JPEG vs WebP
- 📷JPEG — maximum compatibility. Works in every app, browser, and social platform.
- 🌐WebP — 25–35% smaller at equal quality. Best choice for websites and web performance.
Common use cases
- ⚡Speed up websites — large images are the #1 cause of slow page loads
- 📧Shrink email attachments to stay under file-size limits
- 📱Prepare images for social media uploads
- 💾Free up storage on your device or cloud drive
Frequently asked
Is my data private? Yes — 100%. Compression runs entirely in your browser via the HTML5 Canvas API. Your images never leave your device.
What quality setting should I use? 75–85% is ideal for web images. Below 60% you'll notice visible artifacts. For email attachments, 60–70% is usually fine.
Can I compress PNG files? Yes — this tool converts them to JPEG or WebP, which typically achieves 60–80% size reduction. Note: PNG transparency becomes a white background in JPEG output.
Why didn't my file get smaller? Already-compressed JPEGs at high quality may not reduce much further. Try lowering the quality slider or switching to WebP.
Frequently Asked Questions
Is my image uploaded anywhere?
No. Compression runs entirely in your browser using the Canvas API. Nothing is sent to a server.
What image formats are supported?
JPEG, PNG, and WebP.
Will compression make my image look worse?
At the default quality setting (80%), quality loss is nearly invisible. Adjust the slider to find your balance.
Can I compress multiple images at once?
Yes. Drag and drop multiple images and download them individually or all at once.
Is there a file size limit?
No server limit. Very large images (50MB+) may be slow depending on your device.