PNG to WebP
Turn heavy PNG files into WebP and keep the transparency. Runs entirely in your browser, so your images are never uploaded.
Drop your PNG files here
or click to browse. Convert as many as you like at once.
PNG files are usually far bigger than they need to be
PNG is lossless, which is exactly right for screenshots with small text or diagrams with hard edges. It is the wrong choice for a photograph or a large decorative graphic, where it can easily be several times the size of an equivalent WebP.
WebP supports transparency too, which is what makes it a genuine PNG replacement rather than only a JPG one. You get the alpha channel and a much smaller file.
Transparency is preserved
Logos, icons, cut-out product shots and anything with a transparent background come through with the alpha channel intact. There is no white box behind your graphic and no halo around the edges.
Your files stay on your device
This converter runs on your own machine using the browser canvas. Nothing is transmitted, so nothing can be retained or leaked. Open developer tools, watch the Network tab, and convert. It stays empty.
That matters more than it sounds for design work. Client logos, unreleased product art and internal diagrams are exactly the sort of thing that should not be sitting on a stranger's server.
When to keep the PNG
Keep PNG when the pixels are the point: screenshots containing small text, technical diagrams with sharp edges, and source images you intend to edit again. For everything else, WebP is smaller for no meaningful loss.
Questions people ask
- Does PNG to WebP keep transparency?
- Yes. WebP supports an alpha channel, so transparent backgrounds are preserved exactly. This is the main advantage over converting to JPG.
- How much smaller are the files?
- For photographic or complex PNGs the saving is often large, commonly well over half. For simple flat graphics the difference is smaller. The tool shows the exact figure per file.
- Is anything uploaded to a server?
- No. The conversion happens in your browser. You can verify it by opening the Network tab in developer tools and watching it stay empty while you convert.
- Should I ever keep the PNG instead?
- Yes, for screenshots with small text, diagrams with hard edges, and any master file you plan to edit again. PNG is lossless, so nothing degrades.
- Can I convert a whole folder at once?
- You can select or drop many files together and convert them in one pass. Each file gets its own download link.
Worked example: shrinking a PNG for a web page
How to use it
- Drop your PNG files onto the converter, or click to browse and select them.
- Review the quality setting. Keep it higher for detailed images, and lower it only when a smaller file matters more.
- Click Convert to WebP and compare each result with its original size.
- Download the WebP files and test them on the page, email or document where they will actually be used.
- Keep the original PNG as your master file, especially if you may edit the image again.
Use cases / who it's for
- Website owners: a homepage hero saved as a large PNG can often become a much lighter WebP, helping the page load faster while keeping the same layout.
- Bloggers and creators: screenshots and graphics prepared for an article can be converted in a batch before uploading, rather than one by one in an editor.
- Designers with transparent graphics: logos and cut-out images can move to WebP while keeping transparency, unlike JPG.
- Freelancers handing over web assets: a developer can supply WebP versions for the live site while retaining PNG masters in the project folder.
Example
You have team-photo.png at 2.4 MB on a services page. Convert it, download team-photo.webp, and compare the two at the size the page displays. If faces, edges and text still look clean, replace the page image with the WebP and keep the PNG in your source folder. For a simple flat logo the saving may be modest; for a photographic PNG it is often substantial. The tool shows the result per file, so judge the actual file in front of you rather than relying on a promise.
Tips / common mistakes
- Keep PNG for tiny text and technical diagrams if WebP softens edges at your chosen quality.
- Do not convert the only copy of an image. WebP is a delivery format; the PNG master remains useful for editing.
- Test transparency after conversion by placing the WebP over a coloured background.
- Do not lower quality repeatedly on the same file. Always convert from the original PNG.
FAQ
Does PNG to WebP keep transparency?
Yes. WebP supports transparency, so a transparent PNG background can remain transparent after conversion.
Can I convert a batch of PNGs?
Yes. Drop or select multiple files and convert them in one pass, then download each WebP.
Should I delete the PNG after converting?
No. Keep it as the editable, lossless master and use the WebP where smaller file size matters.
Keep going: JPG to PNG converter · WebP to PNG converter · Image Compressor.