Image Compressor
Compress images directly in your browser. Adjust quality, see size savings instantly, and download the compressed file.
About Image Compressor
Our free Image Compressor allows you to reduce the file size of your images directly in your browser without uploading them to any server. Using the HTML5 Canvas API, this tool compresses JPEG and PNG images while letting you control the quality level, so you can find the perfect balance between file size and visual quality.
Image compression is essential for faster website loading times, reduced storage usage, and meeting file size limits on platforms like email, social media, and web forms. Even a modest reduction in quality (from 100% to 80%) can cut file size by 50% or more with minimal visible difference.
Your images never leave your device — all processing happens locally in your browser using the Canvas API. This ensures complete privacy and instant results without waiting for uploads or downloads from a remote server. The tool works with all common image formats including JPEG, PNG, WebP, and BMP.
Frequently Asked Questions
Q How does image compression work?
This tool uses lossy compression via the Canvas API. When you set a quality value (1-100%), the browser's image encoder reduces the file size by discarding some image data. Lower quality values result in smaller files but may introduce visible artifacts. Most photos look virtually identical at 70-85% quality while being significantly smaller in file size.
Q What quality setting should I use?
For web use, 70-85% quality is usually ideal — it provides a great balance between file size and visual quality. For photos shared on social media, 75% is typically sufficient. If you need higher quality for printing or professional use, use 85-95%. Only use 95-100% when quality is critical, as the file size reduction will be minimal.
Q Is my image data private?
Yes, absolutely. All image processing happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to any server, never stored anywhere, and never shared with anyone. When you close the page, all image data is gone. Your privacy is fully protected.