Every image tool here runs entirely in your browser using the Canvas API — your files are never uploaded to a server. That means instant conversions, no file-size limits beyond your device's memory, and complete privacy for sensitive images.

Which image format should you use?

Use WebP for most web images — it's typically 25–35% smaller than JPEG or PNG at the same quality and is supported by every modern browser. Keep PNG for graphics that need transparency or pixel-perfect edges, JPEG for photographs where a small quality trade-off is acceptable, and reach for AVIF when you need the smallest possible files and can accept slightly slower encoding.

How to optimize images for Core Web Vitals

Large images are the most common cause of a poor Largest Contentful Paint (LCP) score. Convert hero and content images to WebP, resize them to the maximum dimensions they'll actually be displayed at, and compress to around 80% quality — usually indistinguishable from the original. These three steps alone often cut image weight by 60–80% and noticeably speed up page loads.

Frequently asked questions

Are my images uploaded to a server?

No. All image tools process files locally in your browser using the Canvas API. Nothing is uploaded, stored, or transmitted — your images never leave your device.

What's the best free image format for the web?

WebP is the best all-round choice: it's lossless or lossy, supports transparency, and is 25–35% smaller than PNG/JPEG. Use AVIF for maximum compression and PNG when you need guaranteed compatibility or transparency.

Is there a file size limit?

There's no server-imposed limit because processing happens in your browser. Very large files (over ~50 MB) may be slow depending on your device's memory, but typical web images convert instantly.