WebP, a new image format for the Web
As part of Google's initiative to make the web faster, over the past few months we have released a number of tools to help site owners speed up their websites. We launched the Page Speed Firefox extension to evaluate the performance of web pages …
Context & Ripple Effects
WebP arrives mid-stream in Google's 2010 'make the web faster' campaign: the company had already shipped the Page Speed Firefox extension so site owners could measure what slows their pages down, and on the same day it gave its goo.gl URL shortener a dedicated home. A new image format is the heaviest-weight item yet in that sequence, because images dominate page bytes and every other speed tool works around them.
The pickup pattern shows how the trade read it: CNET framed WebP not as an experiment but as a 'JPEG alternative', which is exactly the stakes — Google is proposing to displace a two-decade-old incumbent format rather than add another tool.
First-order effects
- Site owners already using Google's Page Speed tooling gain a concrete new lever: swapping heavy JPEGs for WebP encodes directly attacks the largest byte cost on a typical page, which is the metric those tools score.
- Browser vendors now face an adoption decision — a format renders nowhere until engines ship decoders, so outside Google's own Chromium base, WebP is invisible to readers on day one.
Second-order effects
- Rival browser makers must weigh whether supporting a Google-authored codec advances their users' interests or entrenches Google's speed agenda, while JPEG's universal compatibility becomes every holdout's default argument.
- Adoption pressure shifts downstream to the authoring and serving chain — photo software, publishing platforms, and hosts have to encode or transcode WebP before any reader benefit exists, making tool support the real gatekeeper.
Third-order effects
- If the pattern holds, core web formats stop emerging purely from standards bodies and start arriving as platform companies' bundled packages — a measurement tool, a format, and a browser shipped together by one player.
- Page speed hardens into a competitive axis of the open web itself, where whoever controls both the scoring methodology (like Page Speed) and the optimized assets (like WebP) shapes what 'fast' means industry-wide.
The trend: Platform companies are increasingly setting web infrastructure by pairing their own formats with their own measurement tools, turning raw page speed into a strategic lever rather than a shared standard.