Free Online Image Compressor
Reduce image file size up to 80% with zero visible quality loss. PSNR/SSIM validated compression.
How to Compress an Image Online
Upload Your Image
Drag and drop or click to browse. Supports JPEG, PNG, GIF, HEIC, and WebP input formats. Your image is uploaded securely over HTTPS and processed on our servers. Files are automatically deleted after download.
Choose Output Format
Select WebP for maximum compression (default) or keep your original format. You can also resize or crop before compressing to further reduce file size. All editing tools are available on this page.
Download Compressed Image
Click convert and download your compressed image. The exact file size reduction is displayed so you can see exactly how much space you saved. Expect 25-80% smaller files depending on format and content.
Frequently Asked Questions
File size reduction depends on the input format and image content. Converting JPEG to WebP typically saves 25-34%. Converting PNG to WebP saves 26% or more for lossless, and up to 80% when switching from lossless PNG to lossy WebP. Photographs with smooth color gradients compress more effectively than images with sharp text or fine geometric detail. SharpWebP shows you the exact file size before and after every conversion so you can see the savings immediately.
SharpWebP uses lossless compression by default, which reduces file size without any quality loss -- every pixel remains identical. Even in near-lossless mode, the quality difference is imperceptible to the human eye, with SSIM scores above 0.99. Every compression is validated with PSNR (peak signal-to-noise ratio) and SSIM (structural similarity index) metrics to guarantee quality preservation. You get smaller files without visible degradation.
SharpWebP accepts JPEG, PNG, GIF, HEIC, and WebP as input formats. For maximum compression, we recommend converting to WebP (the default output format), which provides the best balance of file size reduction and browser compatibility with 97% global support. Free users can output WebP; paid plans unlock AVIF (even smaller than WebP) and JPEG XL output formats for maximum compression.
Free users can compress images up to 10 MB per file with up to 5 conversions per day. Paid plans support larger files (up to 50 MB on Pro and Business plans) and higher daily limits. There is no minimum file size -- even small images benefit from format conversion to WebP. Batch compression for processing multiple images at once is available on paid plans.
Yes, completely free with no catches. SharpWebP's image compressor requires no account, no signup, and applies no watermarks or quality restrictions. Free users can compress up to 5 images per day with WebP output. Paid plans (starting at 499 INR/month) unlock batch compression for processing dozens of images at once, higher daily limits, larger file sizes, and additional output formats including AVIF and JPEG XL.