Image Compressor
How to Use
- Select or drop an image file (JPEG, PNG, or WebP).
- Adjust the quality slider — lower values produce smaller files.
- Set maximum width and height to resize the image if needed.
- Choose the output format (JPEG, PNG, or WebP).
- Click Compress, then download the result.
What Is Image Compression?
Image compression reduces file size by removing redundant data. Lossy compression (JPEG, WebP) discards some visual detail for much smaller files, while lossless compression (PNG) preserves every pixel. This tool uses the Canvas API built into your browser to re-encode images at your chosen quality level.
Common Use Cases
- Optimizing images for websites and blogs to improve page load speed.
- Reducing photo file size before uploading to social media or email.
- Converting between image formats (e.g., PNG to WebP for better compression).
- Resizing images for thumbnails, avatars, or profile pictures.
- Preparing images for mobile apps where bandwidth is limited.
Tips
- JPEG quality 60-80 provides a good balance between file size and visual quality.
- WebP typically achieves 25-35% smaller files than JPEG at the same visual quality.
- PNG is best for images with text, sharp edges, or transparency.
- Reducing dimensions has the biggest impact on file size — try halving the width and height.
- Preview the compressed image before downloading to check for visible artifacts.
Privacy
All image processing happens entirely in your browser using the Canvas API. Your images are never uploaded to any server. No data leaves your device.