Web Image Optimization

What Is WebP?

Learn what WebP is, how it supports lossy, lossless, transparency, animation, metadata, and when converting JPG or PNG images to WebP is useful.

By Recipemoon Editorial

WebP is an image format designed for web delivery. It can store lossy images, lossless images, transparency, animation, color profiles, and metadata in a single modern format family.

In practical terms, WebP often sits between older JPG/PNG workflows and newer AVIF workflows. It is widely useful, easy to test, and supported by many browsers and publishing tools.

What WebP can store

WebP can be lossy, like JPG, when you want smaller photographic images. It can also be lossless, like PNG, when you need exact reconstruction of supported image data.

WebP can include alpha transparency, so it can replace some PNG use cases for icons, cutouts, and graphics. It can also store animations, which makes it an alternative to animated GIF in some workflows.

The WebP container is based on RIFF chunks. Depending on the file, those chunks may describe image data, animation frames, alpha data, color profile information, EXIF metadata, or XMP metadata.

When WebP is useful

WebP is useful for website photos, thumbnails, product images, article images, and some transparent graphics. If a page currently ships heavy JPG or PNG files, WebP is often a reasonable first modern format to test.

It is also useful when you need one format strategy that can handle several image types. A site may use lossy WebP for photos and lossless or alpha WebP for selected graphics.

When WebP is not the whole answer

WebP is not automatically smaller than every source. A file can grow if you choose an inappropriate mode or quality setting, especially when converting from one compressed format to another.

WebP is also not a source-editing format for every design workflow. Keep original photos, SVGs, layered design files, or clean PNG exports where needed. Treat WebP as a delivery format unless your workflow says otherwise.

WebP and metadata

WebP can carry metadata, but conversion tools differ. Some workflows strip metadata; others preserve selected fields. If metadata privacy matters, inspect the final WebP file rather than assuming conversion removed everything.

Recipemoon workflow

Use JPG to WebP for photos that need lighter website delivery. Use PNG to WebP when testing whether a graphic or screenshot can become smaller without visible damage. Use WebP to JPG or WebP to PNG when another app cannot open WebP.

Use WebP to AVIF only when you are comparing modern formats for a specific page or asset. Test the result visually; a newer format is useful only if it improves the real output.

Relevant Recipemoon Tools

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