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JPG/PNG ↔ WebP converter

Optimize web images: convert to WebP or re-export to PNG/JPEG. Local processing in the browser.

{{ imageWebpConverter.fileName }}

{{ imageWebpConverter.message }}

{{ t("imageHowToWebpTitle") }}

  1. {{ t("imageHowToWebp1") }}
  2. {{ t("imageHowToWebp2") }}
  3. {{ t("imageHowToWebp3") }}

PNG

{{ t("imageEduPngWebp") }}

JPEG

{{ t("imageEduJpgWebp") }}

WebP

{{ t("imageEduWebpLong") }}

SVG

{{ t("imageEduSvgWebp") }}

More image tools

Working with SVG icons or logos? Rasterize to PNG or JPEG at a chosen size with the SVG converter. Before or after WebP, tune crop and dimensions in the resizer to fit your layout. Want a black-and-white variant in your workflow? Create grayscale, then convert to WebP if needed.

Overview

In 2010, Google announced WebP — a new image format derived directly from the VP8 video codec, which the company had acquired along with On2 Technologies for 124 million dollars. The logic was straightforward: if video compression used extremely efficient intra-frames (I-frames), why not apply the same principle to static images? The result was a format capable of producing files 25% to 35% smaller than JPEG for photographs and about 26% smaller than PNG for images with transparency, with support for both lossy (VP8-based) and lossless (VP8L-based) compression, plus animations — all in a single container. Google's motivation was pragmatic: YouTube, Google Images, and Google Play serve billions of images per day. A 30% reduction in average file size means massive savings in bandwidth, CDN costs, and latency for users.

Despite launching in 2010, WebP took more than a decade to gain universal browser support. Firefox only added support in 2019, and Safari did not until 2020 with Safari 14 — over ten years after the format existed. That slow adoption is one reason the web is still full of JPEGs and PNGs. Today WebP matters primarily because of Google's Core Web Vitals: LCP (Largest Contentful Paint) measures how long it takes for the largest visible image to load, and lighter images load faster. Sites that migrate to WebP often gain points in PageSpeed Insights. The next generation has already arrived: AVIF (based on the AV1 codec, 2019) compresses even better than WebP but encodes more slowly and compatibility is still not universal.

In this tool, JPEG and PNG are decoded on an HTML5 canvas and re-exported to the chosen format. WebP encoding depends on the browser's canvas support — modern Chrome, Edge, and Firefox work well. If you have a WebP file and need a PNG or JPEG for compatibility with legacy systems, older image editors, or email clients, the reverse conversion is here too. No files are uploaded to any server.

Technical deep dive

Common questions summarized

  • Does every browser encode WebP?: WebP export uses the browser canvas. If it fails, update the browser or try another engine.
  • Does WebP replace PNG everywhere?: Not always. For maximum compatibility or lossless workflows, PNG is still common. WebP shines for optimized web delivery.
  • What is this tool for?: It runs fully in your browser: useful to validate, format, or convert data in everyday development.
  • Are my inputs sent to a server?: Processing happens locally with JavaScript. We do not store what you paste into the text areas.
  • Can I use this for real production data?: Use at your own risk. For secrets (passwords, tokens), prefer controlled environments and your company policies. And always review the generated contents. Never trust blindly things you see on the internet.

Sample payload to try

  • See also the larger "Code Snippets" sample; paste this excerpt to try locally: Use — Para WebP: escolha qualidade. De WebP: PNG mantém alpha; JPEG usa fundo branco.

Code Snippets

Code example
Para WebP: escolha qualidade. De WebP: PNG mantém alpha; JPEG usa fundo branco.

Use 

Para WebP: escolha qualidade. De WebP: PNG mantém alpha; JPEG usa fundo branco.

FAQ

Does every browser encode WebP?

WebP export uses the browser canvas. If it fails, update the browser or try another engine.

Does WebP replace PNG everywhere?

Not always. For maximum compatibility or lossless workflows, PNG is still common. WebP shines for optimized web delivery.

What is this tool for?

It runs fully in your browser: useful to validate, format, or convert data in everyday development.

Are my inputs sent to a server?

Processing happens locally with JavaScript. We do not store what you paste into the text areas.

Can I use this for real production data?

Use at your own risk. For secrets (passwords, tokens), prefer controlled environments and your company policies. And always review the generated contents. Never trust blindly things you see on the internet.

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