PNG to WebP converter
Convert PNG to WebP to cut file size while keeping transparency. Pick the quality, convert in batches and download the files. Nothing leaves your browser.
How to convert PNG to WebP
- Add your PNG filesDrag them onto the box, click it to browse, or paste an image from your clipboard. You can add up to 50 files at a time.
- Choose your WebP optionsSet the quality. Higher looks better, lower makes smaller files. Optionally limit the longest side of the image. Results update as you change the options, and you can see the file size before and after for every image.
- Download the resultSave files one by one, or use Download all as ZIP when you've converted several.
About PNG to WebP conversion
WebP was created by Google as a modern replacement for both PNG and JPG. It can store lossless images like PNG, lossy images like JPG, transparency, and animation, usually at a smaller size than either. Every current major browser can display it, which makes it a practical default for images on websites.
A lossy WebP with transparency can be dramatically smaller than the PNG it came from, which is why it suits product cutouts, hero graphics and UI assets. The trade-off is compatibility with older software: some image editors, print workflows and email clients still can't open WebP.
What happens to transparency
WebP keeps transparency. In lossy mode the color data is compressed while the alpha channel is preserved, so soft edges and shadows survive. That makes WebP a strong replacement for large transparent PNGs.
When WebP is the right choice
- Images on websites where page weight and load speed matter
- Transparent product photos and hero graphics that are too large as PNG
- App and game assets that need transparency at a smaller size
- Improving Core Web Vitals by shrinking the largest image on a page
When to use something else
- Files you send to people who may use older office, print or email software
- Master copies you plan to keep. Archive the PNG and publish the WebP.
- Workflows that require a specific format such as JPG or PDF
PNG and WebP compared
| PNG | WebP | |
|---|---|---|
| Compression | Lossless | Lossless or lossy |
| Transparency | Yes | Yes, in both modes |
| Animation | No (APNG is separate) | Yes |
| Typical size | Baseline | Usually noticeably smaller |
| Compatibility | Everywhere | All current browsers, some older apps can't open it |
Frequently asked questions
Is WebP better than PNG?
For delivering images on the web, usually yes: the files are smaller and transparency still works. PNG remains the safer choice for editing, archiving and sharing with software you don't control.
Does WebP support transparency?
Yes. Both lossless and lossy WebP can carry a full alpha channel, so a transparent PNG converts without losing its transparency.
What quality should I choose for WebP?
Around 80 to 85 is a good balance for most images. Setting quality to 100 produces lossless WebP in most Chromium-based browsers, which is useful for UI graphics and screenshots.
Why does this page say it used the server?
Some browsers, mostly older versions of Safari, can't create WebP files themselves. When that happens, the page converts the image on our server instead and tells you so. In browsers that can create WebP, nothing is uploaded.
Are my files uploaded?
Not when your browser can create WebP itself, which is the usual case. If it can't, the image is converted on our server instead, and the page tells you.
How many PNG files can I convert at once?
Up to 50 files, each up to 100 MB. Add them together and download everything as a ZIP.
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