Image Compressor

The Image Compressor is an online image compressor that shrinks file sizes by re-encoding an image as WebP or JPEG at a quality level you choose — often cutting 60–90% off a photo's size with little visible difference at normal viewing sizes. The before/after byte sizes and the percentage saved are shown live as you adjust quality, so finding the right balance between file size and visual fidelity is a matter of dragging a slider and watching the numbers, not guessing and re-exporting repeatedly.

Smaller images translate directly into a faster site: quicker page loads, less bandwidth for visitors on mobile connections, faster uploads to a CMS, and lower storage costs if you're archiving a large photo library. It's the kind of pass every image should go through before it ships to production, especially photos straight out of a phone or DSLR that are often 3–10x larger than they need to be for web display.

WebP is worth defaulting to when you're not sure: it typically beats JPEG by 25–35% at equivalent visual quality and every modern browser supports it, so there's rarely a reason to compress image online output as JPEG unless a specific downstream system requires it. Compression runs entirely on your device using the HTML5 canvas's built-in re-encoding — private, unpublished photos are never uploaded to a server, and there's no file-count limit or processing queue, so batches of images can be compressed one after another with no waiting.

A quality setting of 70–80 is visually near-lossless for most photographs — the compression artifacts exist but aren't perceptible at normal zoom. Push lower (50–60) for thumbnails, previews or background images where small size matters more than fine detail, and stay aware that JPEG output always drops transparency (alpha channels get filled with white), so logos or graphics that need to stay transparent should be compressed as WebP instead.