Image Compressor
Reduce image file size with adjustable quality. 100% client-side — nothing is uploaded.
Drag & drop an image here
or click to select a file (JPG, PNG, WebP)
What Is Image Compression and How Does It Work?
Image compression reduces the file size of photos and graphics by adjusting the encoding quality. Our tool uses the HTML5 Canvas API to re-encode your image at a quality level you choose. Lower quality settings produce dramatically smaller files, while higher settings preserve more detail. This lossy compression is ideal for web images, email attachments, and social media uploads.
How Do I Compress an Image Online for Free?
Select or drag a JPG, PNG, or WebP image onto the upload area. Adjust the quality slider to your preferred balance of size and sharpness, then click Compress. The tool renders your image on a hidden canvas and exports it at the target quality. Download the result instantly. No signup, no server upload, no daily limits.
How Much Can I Reduce an Image File Size?
Results vary by image content and original quality, but typical JPEG photos can be reduced by 50 to 80 percent at medium quality with minimal visible difference. Screenshots and graphics with flat colors compress even more efficiently. The tool shows you the original and compressed sizes so you can compare before downloading.
Is My Image Data Kept Private?
Yes. The entire compression process happens in your browser using JavaScript and the Canvas API. Your image data is never sent to any server, making this tool safe for personal photos, proprietary designs, and confidential screenshots.
What Is the Ideal Image Size for Websites?
For web use, aim for images under 200 KB for inline content and under 100 KB for thumbnails. Hero images can be up to 500 KB if necessary. Use this compressor to reduce file sizes before uploading to your website. Combined with modern formats and responsive image techniques, compressed images significantly improve page load times and Core Web Vitals scores.