Multiconversor

Convert PNG to WebP

Free, no account, no watermark. Your PNG files are turned into WebP inside this browser tab — they are never uploaded to a server.

  • Nothing leaves your device
  • No account, no email
  • Free, and no watermark

Drop your files here

Tap to pick your photos

or

Choose files

Up to 30 files at a time · 60 MB per file

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Why convert PNG to WebP?

The standard optimisation for web graphics. WebP’s lossless mode keeps transparency and every pixel at typically 20–30% less weight than PNG, and its lossy mode goes a great deal further when the image is photographic.

WebP is the pragmatic choice for anything served on the web: meaningfully lighter pages and faster loads, without the support gaps AVIF still carries.

How to convert PNG to WebP

  1. Drop your PNG files into the box above, or click to pick them from your device.
  2. Adjust the quality slider if you want a smaller file or a sharper result.
  3. Hit convert. The work happens inside your browser, so it takes a second or two per image.
  4. Download each WebP file, or grab them all in one ZIP.

About the formats

PNG — Portable Network Graphics

PNG is lossless: what goes in comes back out pixel for pixel, no matter how many times you re-save it. Add a full alpha channel and you have the natural home for logos, screenshots, diagrams and anything with hard edges or text. The cost is weight — a photograph stored as PNG can be five times heavier than the same photo as JPG.

Strengths

  • Lossless — no compression artefacts, at any number of re-saves
  • Full alpha transparency, including soft anti-aliased edges
  • Universal support, and the default for screenshots and interface assets

Limitations

  • Far heavier than JPG or WebP for photographic content
  • No quality dial — you take the file size you are given
  • Slower to decode at very large dimensions

WebP

WebP is Google's attempt to replace both JPEG and PNG with a single format. It handles lossy and lossless, keeps transparency and animation, and typically comes in 25–35% smaller than an equivalent JPEG. Every browser released in the past several years supports it, which is why so much of the web now serves it.

Strengths

  • 25–35% smaller than JPEG at matched quality
  • Transparency and animation in one format
  • Supported by every current browser

Limitations

  • Desktop software from before 2020 often cannot open it
  • Print shops and photo labs frequently reject it
  • Its lossy mode smooths fine texture more aggressively than JPEG
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Frequently asked questions

Are my photos uploaded anywhere?

No. The conversion runs entirely in your browser using WebAssembly and the Canvas API. Your images are never sent over the network, never touch a server, and are dropped from memory as soon as you close the tab.

Will I lose quality?

WebP is a lossy format, so some data is discarded. At the default quality of 85% the difference is invisible on screen for most photos. Raise the slider if you plan to print or edit the result.

Is there a limit or a cost?

It is free and there is no account. The only limits are practical: 30 files at a time and 60 MB per file, so that the tab does not run out of memory on a phone.

Can I convert several files at once?

Yes — drop in up to 30 files and they are processed one after another, then downloaded individually or as a single ZIP.

Does it work offline?

Once the page has loaded, yes. The converter itself needs no network connection, so you can drop the connection and keep converting.

Does it work on a phone?

Yes, on iOS and Android. Large batches are slower on a phone because the decoding happens on the device, so stick to smaller groups if things feel sluggish.

Other conversions

Same tool, different formats.