Image Compressor
Compress images to reduce file size with adjustable quality. Compare before and after. All processing in your browser.
Click or drag images here
JPG, PNG, WebP
About Image Compression
Image compression reduces file size by removing less noticeable image data. Lossy compression, used in JPEG and WebP, can achieve 50-70% size reduction at 80% quality with minimal visible difference. This makes it essential for web performance and storage optimization.
Upload your images, adjust the quality slider to balance between file size and visual fidelity, and optionally set maximum dimensions to resize large images. Click Compress to process, then compare original and compressed file sizes side by side before downloading.
Image compression is critical for improving website page load speed, meeting upload size limits on social media and email, reducing cloud storage costs, and optimizing mobile app assets. Google's Core Web Vitals rank page speed as a key SEO factor, and image size is often the largest contributor to slow pages.
The tool uses the Canvas API to re-encode images at your chosen quality level. For photos, JPEG and WebP compression work best because they exploit how human vision is less sensitive to certain color and detail changes. Optionally setting max width or height downscales the image first, combining dimension reduction with compression for maximum file size savings.