Image Compressor
Compress JPG, PNG, and WebP images with adjustable quality to reduce file size.
Compress images for websites, email, and storage
Large image files can slow down web pages, exceed attachment limits, and consume unnecessary storage. This free image compressor reduces JPG, PNG, and WebP file sizes directly in your browser. You can adjust the quality setting before processing, compare the original and compressed sizes, and download one result or a ZIP archive for a batch. The source file is not overwritten, so you can keep the original while choosing the smaller version that fits your use case.
How image quality and file size interact
JPG and WebP commonly use lossy compression, which removes some visual information to create a smaller file. A high quality value usually keeps photographs looking close to the original while delivering useful savings. Lower values can reduce the size further but may introduce softness or block artifacts. PNG behaves differently because it is normally used for lossless graphics and transparency. Results therefore vary with the image format, dimensions, detail, and the amount of noise in the source image.
Practical compression tips
Start with a high quality setting and lower it gradually while checking text, faces, gradients, and sharp edges. Resize oversized photos before compressing them when the final display area is much smaller than the original dimensions. For photographs, JPG or WebP usually provides a better size-to-quality balance; for logos, screenshots, or graphics that require transparency, PNG may be the safer choice. Always review the downloaded result at its intended display size before replacing an important production asset.
Plan a repeatable image optimization workflow
For a website, record the maximum display width for each image type before processing anything. Export the source at that size, compress a representative sample, and compare the results on both standard and high-density screens. A hero photograph, product thumbnail, and text-heavy screenshot may need different formats or quality settings. Consistent decisions are more reliable than choosing the smallest result without looking at it, especially when many assets share the same publishing template.
Keep meaningful filenames and preserve an untouched master copy outside the download folder. After compression, check dimensions, format, transparency, orientation, and visible artifacts before uploading the result. Measure the real page afterward because image weight is only one part of performance; responsive markup, lazy loading, caching, and layout stability also matter. Browser-based compression is convenient for preparation, but the final delivery setup determines what each visitor actually downloads on representative mobile and desktop connections.