File4Edit

PNG to WebP converter

Convert PNG images to WebP for free in your browser, with nothing uploaded. WebP keeps transparency and is usually much smaller than PNG, so pages load faster; the quality slider sets how much detail you trade for size.

Pick a target format. Quality applies to the lossy formats; the others are exact.

Lossy, lossless and transparency

PNG to WebP is the usual way to make images lighter for a website without giving up transparency. WebP has an alpha channel like PNG, so logos, icons and cut-outs keep their clear backgrounds, and every current browser displays it.

The quality slider starts at 0.82, which is lossy, and photographic PNGs shrink the most. For screenshots, diagrams and flat artwork, drag it to 1.00: Chrome and Edge, and File4Edit's own WebP encoder in Safari, then write lossless WebP, which keeps text and hard edges as crisp as in the PNG and is usually smaller than it. Safari and every browser on iPhone and iPad cannot create WebP from a web page themselves, so File4Edit downloads its own WebP encoder the first time one is needed there, and it runs in the tab like everything else.

PNG to WebP converter at a glance

Input
PNG images, including transparent ones
Output
WebP at the quality you set, with transparency kept
What it does
  • Transparency kept in the WebP
  • Quality from 0.05 to 1.00, starting at 0.82
  • Lossless WebP at 1.00 in Chrome, Edge and Safari
  • WebP in Safari and on iPhone through File4Edit's own encoder
  • Batch conversion with one ZIP download
  • The percentage saved shown before you download
Who it is for
Web developers, bloggers and store owners making pages load faster.
Limits
  • WebP cannot be wider or taller than 16,383 pixels.
  • In Safari and on iPhone and iPad, File4Edit's own WebP encoder downloads the first time it is needed, so that first image takes a moment longer.
  • Lossy WebP can soften fine text, so use 1.00 for screenshots.
Privacy
Encoded in your browser, even where File4Edit's own WebP encoder is used, so the PNGs are never uploaded.

How to convert PNG to WebP

  1. Add your PNG files Drop a batch of PNGs, such as the images for one page of your site. Each gets a row with its dimensions.
  2. Decide lossy or lossless WebP is preselected at quality 0.82, which suits photos and detailed art. For screenshots, charts and logos with text, drag the slider to 1.00, which Chrome, Edge and Safari write as lossless WebP.
  3. Compare the size The strip above the preview shows the WebP's size and the percentage saved on the first image, so move the slider until both the saving and the look suit you.
  4. Download the WebP files Press Apply, then Download. A single file saves directly and a batch arrives as one ZIP, ready to upload to your site.

PNG to WebP converter: common questions

Does PNG to WebP keep transparency?

Yes. WebP has its own alpha channel, so transparent backgrounds and soft edges come through at every quality setting.

Is WebP smaller than PNG?

Usually. A lossy WebP of a photographic PNG is far smaller, and a lossless WebP is typically smaller than the PNG as well, though by less.

Can I make WebP on an iPhone or in Safari?

Yes. Those browsers display WebP but cannot create it from a web page on their own, so File4Edit writes it with its own WebP encoder, which runs in the tab and downloads the first time you need it.

Will every browser show my WebP images?

Yes. Current versions of Chrome, Edge, Firefox and Safari all display WebP, so a website can use it without a fallback for today's browsers.