Free · Private · In-Browser

Image to WebP Converter — Free, Smaller Files, In-Browser

Open the converter

This image to WebP converter turns JPG, PNG, GIF, BMP, and HEIC files into modern WebP images that are typically 25–35% smaller than the equivalent JPG. Conversion happens inside your browser — no uploads, no signup, no rate limit.

WebP is Google's modern image format and is now supported by every major browser. For a website, switching from JPG to WebP can shave megabytes off a single page load without a visible quality difference. For an email newsletter or a Notion doc, WebP saves storage. For a portfolio, WebP keeps full visual quality at half the file size.

The tool re-encodes your source through the browser canvas at the quality slider value you choose. PNG and HEIC inputs with transparency keep their alpha channel — WebP supports transparency natively, unlike JPG. Animated GIFs convert to static WebP (the first frame); for animation preservation, look at a dedicated GIF tool.

WebP is read by Chrome, Firefox, Safari, Edge, and every modern OS. The one place it still struggles is older email clients and some Windows preview windows, where you may want JPG instead.

Frequently asked questions

Are my images uploaded?

No. WebP encoding runs inside your browser using the canvas toBlob API. Nothing is sent to any server.

How much smaller is WebP than JPG?

At the same perceived quality, WebP files are typically 25–35% smaller than JPG and 50–80% smaller than PNG.

Does WebP support transparency?

Yes. Unlike JPG, WebP has a full alpha channel. PNG and HEIC transparency is preserved when converting.

Will old browsers be able to open WebP files?

Every modern browser (Chrome, Firefox, Safari 14+, Edge) supports WebP. For very old environments, use the JPG converter instead.

Does this work offline?

Yes. After your first visit the app installs as a PWA and conversions work without an internet connection.

Related tools

Files stay on your device. No login. Installs as a PWA on iPhone, Android, and desktop.
← Back to Free File Converter