WebP vs. JPG: Which Format Should You Use?

WebP was built specifically to beat JPG at its own job — smaller files, similar or better quality — but that doesn't mean it's always the right choice.

Why WebP is usually smaller

WebP is a modern image format that, at similar visual quality, typically produces smaller files than JPG through more efficient compression. It also supports transparency and animation in a single format, which previously required switching between JPG, PNG and GIF depending on the need.

When WebP is the better choice

Web pages, where smaller images mean faster load times — a meaningful factor in both user experience and search ranking (docs/SEO.md's Performance Rules).
Any modern browser context — every current browser displays WebP natively.

When JPG is still the safer choice

Older software, printers, or apps that don't recognize WebP and expect a JPG or PNG specifically.
Contexts where you're not sure what will open the file later — email attachments to an unknown recipient, print shops, or older editing tools.

How to convert between them

Have a JPG you want smaller for the web? Use JPG to WebP.
Have a WebP that needs to work with older software? Use WebP to JPG — note this drops transparency (filled with white) and animation (only the first frame is kept), since standard JPG supports neither.

A practical approach

For a website, serve WebP for the performance benefit, but keep a JPG version on hand if the image also needs to go somewhere that might not support WebP — an email campaign, a printed flyer, or an older internal tool.

FAQ

Do all browsers support WebP now? Yes — every current major browser displays WebP images natively. The compatibility gap is almost entirely with non-browser software.

Does converting JPG to WebP lose additional quality? Any conversion between two lossy formats re-compresses the image, which can introduce a small amount of additional quality loss — for best results, convert from the original source file rather than a copy that's already been compressed once.

Is WebP always smaller than JPG? Usually, but not universally — for some specific images the difference is small. It's still worth using by default for web images given how often it does help.

Convert now

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