Optimize & Print
PNG to WebP Converter
Convert Portable Network Graphics (PNG) files to WebP right in your browser. Free, unlimited batch, and your photos never leave your device.
Your files never leave your device — conversion runs locally in your browser.
To convert PNG to WebP, drop your files above — encoding runs locally in your browser, nothing is uploaded. Transparency is preserved, and the quality slider drives the lossy WebP encoder: 90 looks identical at a fraction of the size. Note that WebP output doesn't carry EXIF metadata. Batch as many files as you like.
Honest limits
- WebP output is lossy (quality slider) — for pixel-perfect output use Compress PNG instead.
- EXIF metadata isn't carried into WebP files.
Need more than a browser can do? Desktop browsers go further than phones — and Media Moana converts at scale on hosted infrastructure.
How it works
Drop your files
Drag PNG files into the drop zone, click to browse, or paste from the clipboard. Whole folders work too.
Convert locally
Each file is decoded and re-encoded to WebP right in your browser — no upload, no queue. Adjust quality or size first if you like.
Download
Save converted files one by one, or download the whole batch as a ZIP. Originals stay untouched on your device.
About the formats
PNG — Portable Network Graphics
PNG is a lossless image format with full alpha transparency, supported everywhere since the late 1990s. It compresses graphics, screenshots, logos and text crisply with zero quality loss, making it the standard choice when you need pixel-perfect output or a transparent background. For photographs PNG files are larger than JPEG, but nothing is ever thrown away.
WebP — WebP
WebP is Google's web image format, supporting both lossy and lossless compression plus transparency and animation. It typically produces files 25–35% smaller than JPEG at the same quality, which is why so many websites serve it — and why images saved from the web often arrive as .webp files that desktop software and upload forms reject.
Frequently asked questions
Is this safe? Do my photos get uploaded?
No upload happens — ever. Converting PNG to WebP runs entirely inside your browser using WebAssembly. Your files never leave your device, nothing is stored on any server, and the tool even keeps working if you go offline after the page loads. That's also why there are no file size limits, no queues and no sign-up.
Does converting PNG to WebP lose quality?
WebP uses lossy compression, so technically yes — but at the default quality setting the difference is invisible for normal viewing and printing. You control the quality slider: higher values mean larger, more faithful files. Your original PNG files are never modified.
Can I convert multiple PNG files at once?
Yes — drop in as many files as you like. Because conversion happens on your own computer instead of a server, there is no per-file fee, no daily cap and no waiting in line. Files are processed one after another, and you can download each WebP file as it finishes or grab the whole batch as a single ZIP.
Is the WebP output lossy or lossless?
Lossy, controlled by the quality slider — at the default of 90 the result is visually identical to the PNG and dramatically smaller, which is the point of moving to WebP for the web. Transparency is preserved either way. If you need pixel-perfect output instead, keep the PNG and run it through the lossless PNG compressor.
Is there a file size or quantity limit?
There is no hard limit. Server-based converters cap uploads because your files consume their bandwidth and CPU; here converting PNG to WebP happens on your machine, so the only practical limit is your device's memory. Desktop browsers comfortably handle very large files and big batches.