Convert images to WebP
Drop images in, get WebP out. The conversion happens entirely in your browser using the canvas API - your images are never uploaded to a server, which is the whole point. Most alternatives want an account and quietly keep a copy.
Why WebP
WebP is a modern image format that is typically 25–35% smaller than a JPEG at the same visible quality, and much smaller than PNG for photos. On a website, that difference is the gap between a page that loads instantly and one that makes a visitor wait. Google measures loading speed as a ranking signal, and images are the single most common reason a site is slow - a photographer uploads a 6MB JPEG straight from the camera where a 200KB WebP would look identical.
How to use it
- Drop in one or many images - JPEG, PNG, or others your browser can read.
- Set the quality. 80–85 is the sweet spot for photos; go higher for graphics with hard edges.
- Download each file, or all of them at once. Nothing leaves your machine.
For a website, convert everything to WebP, size each image to how it actually displays, and lazy-load anything below the fold. That trio fixes most slow sites.
FAQ
Are my images uploaded anywhere?
No. Conversion runs locally in your browser with the canvas API. Nothing is sent to a server.
What quality should I use?
80–85 is ideal for photographs. For logos and graphics with sharp edges, push it higher.
Is there a watermark or a limit?
No watermark, no signup, no limit. It's free.
Which formats can I convert from?
Anything your browser can decode - typically JPEG, PNG, GIF, and BMP.