How it works
- Drop your files in the zone above (or click it, or paste with Ctrl+V).
- They convert instantly, right in your browser — nothing is uploaded.
- Adjust quality or max width if needed; files reconvert automatically.
- Download files one by one, or everything at once as a ZIP.
About the formats
PNG
PNG is the standard lossless format: perfect quality, full transparency support, and universal compatibility. Its weakness is size — photographs saved as PNG are often 5–10× heavier than a visually identical JPG or WebP.
WebP
WebP is Google's image format for the web, offering smaller files than JPG and PNG with both lossy and lossless modes plus transparency. Browsers handle it well, but plenty of desktop software, older tools and upload forms still reject it — which is why images saved from the web often need converting.
What this conversion actually gives
Measured with the converter on this page, on a 2016 × 1512 px test image: the PNG file weighs 5.8 MB.
| Setting | Result | Change |
|---|---|---|
| Quality 85 % (default) | 621 KB | −90 % |
| Quality 60 % | 179 KB | −97 % |
| Max width 1600 px, quality 85 % | 293 KB | −95 % |
The drop is dramatic: −90 %. Turning a PNG into a WebP is the right move whenever file size matters.
For an email attachment, quality 60 % brings it down to 179 KB. Capping the width at 1600 px gives 293 KB — plenty for any screen.
- PNG is lossless, WebP is not: the conversion is one-way, so keep your original if you still need to edit it.
Your own files will differ — a photo full of detail compresses less well than a flat graphic. These figures come from one reproducible test image, not from an average.
Frequently asked questions
How big will my WebP file be?
On our 2016 × 1512 px test image, a PNG of 5.8 MB comes out at 621 KB at the default quality (−90 %). Lower the quality slider or set a maximum width and the figure drops further — the page shows the new size as soon as the file is reconverted.
Will I lose transparency when converting from PNG?
Converting to WebP keeps transparency. Converting to JPG replaces transparent areas with a white background, because JPG has no alpha channel — that's a limit of the format, not of this tool.
Why convert to WebP?
WebP gives the same visual quality as JPG or PNG at roughly 25–35% smaller file size, supports transparency, and is read by every modern browser — the best choice for fast-loading websites.
Are my files really private?
Yes. The conversion runs entirely in your browser using its built-in image engine. Your files are never uploaded, stored or seen by any server — you can even disconnect from the internet after the page loads and keep converting.
Is this free? Is there a file limit?
Completely free, no account, no watermark. Convert as many files as you like, up to 200 MB each — the only limit is your device's memory.
Can I convert many files at once?
Yes — drop a whole batch at once. Each file converts independently and you can grab everything in a single ZIP when done.