Image Compressor

Your image is drawn onto an invisible HTML5 Canvas element, then re-exported at the quality level you choose using the browser’s built-in canvas.toBlob() API. For JPEG and WebP, the quality parameter controls lossy compression — lower values mean smaller files with some visual loss. PNG is lossless through the Canvas API, so for maximum PNG compression, converting to WebP is recommended.

You can upload JPEG, PNG, and WebP images. For output, you can keep the original format or convert to any of the three. WebP typically produces the smallest files at equivalent visual quality. JPEG is widely compatible. PNG is best for images that need transparency or lossless quality.

No. All compression happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device and no network requests are made during processing. You can verify this by disconnecting from the internet — the tool will still work perfectly.

80% is a good default — it typically reduces file size by 40–70% with minimal visible quality loss. Below 60%, compression artifacts become noticeable. Settings above 90% produce diminishing returns with large files. For web use, 70–80% is generally ideal. For print or archival purposes, stay at 90% or above.

Yes. Select or drop multiple files at once and they will all be queued for compression with the same quality and format settings. Each result shows a before/after preview with file sizes and savings. You can download files individually or use the Download All button.