Image Compressor

An image compressor shrinks the file size of a JPG, PNG or WebP image without changing its format, using a quality slider for JPG and WebP, and shows the before-and-after size and percentage saved. It runs in your browser, so the photo is never uploaded.

This tool re-encodes your image at an adjustable quality level, cutting file size while keeping the picture visually indistinguishable at any reasonable quality setting. A photo straight off a phone camera can easily run 3-5 MB — far more than any website, email attachment or WhatsApp share actually needs, and often the reason a page loads slowly or an email bounces for being too large.

Drag the quality slider and compress — higher settings (80-95%) preserve near-original detail with modest savings, useful for photography you'll print or zoom into; lower settings (40-70%) shrink file size dramatically with a barely noticeable quality trade-off, ideal for web images and email attachments. The tool reports the before-and-after size so you can see exactly what you gained before committing to the download.

Compression happens entirely in your browser using the canvas API — your photos are never uploaded to a server, which matters for anything personal or sensitive. For website images specifically, pairing a compressed JPEG with the right dimensions (via the image resizer) typically cuts page weight far more than compression alone, since an oversized image wastes bytes regardless of compression level.

A quick way to judge the right setting: compress at 80%, look closely at fine detail like text or hair strands, and only drop further if the size still isn't small enough for your purpose. Photos with lots of flat colour (product shots on white, screenshots) compress far more forgivingly than busy, high-detail photography, so don't assume one quality number suits every image in a batch.