WebP Converter
Convert images between WebP and PNG or JPG right in your browser. Drop in a WebP to get a PNG or JPG when an app refuses to open WebP, or drop in a PNG or JPG to make a smaller WebP for the web. A quality slider and a live before-and-after size readout let you see WebP's space savings before you download. The picture is never uploaded, so private screenshots and client work stay on your device.
Drop an image here
or choose a file · or paste with Ctrl+V (Cmd+V)
🔒 Converted in your browser with a canvas. Never uploaded.
What is the WebP Converter?
This is a free, browser-based WebP converter that works in both directions. You can turn a WebP image into a PNG or JPG when an app, marketplace, or older program refuses to open WebP, and you can convert a PNG or JPG into a smaller WebP file when you want a lighter image for the web. Everything happens on your own device with an HTML canvas, so the picture is never uploaded, stored, or logged.
How to use it
- Add your image — click to choose a file, drag and drop it onto the drop zone, or paste with Ctrl+V (Cmd+V on Mac).
- Pick the direction. If you added a WebP file, choose PNG or JPG to convert out of WebP. If you added a PNG or JPG, choose WebP to make a smaller modern file. The tool preselects a sensible default for you.
- When the target is WebP or JPG, drag the quality slider to trade a little detail for a much smaller file. PNG is lossless and has no quality knob.
- Read the before-and-after sizes, then click Download. Answer in, answer out, done.
The method behind it
The converter decodes your image, draws it onto an HTML <canvas> at its
native resolution, then calls the browser's built-in encoder through
canvas.toBlob(mime, quality). To produce a WebP it asks for the
image/webp MIME type; to convert a WebP back out it asks for
image/png or image/jpeg. WebP and JPEG are lossy formats, so they
accept a quality number between 0.1 and 1.0 that controls how much fine detail is discarded;
PNG is lossless and ignores quality. Because the encoder is the same one your browser already
ships, the output is exactly what a browser would render — no proprietary algorithm and no
server round trip. When converting to JPG, transparent pixels are painted onto a white
background first, since JPG has no transparency.
Examples
- A 900 KB WebP product photo converted to JPG at quality 0.85 lands near 1.1 MB and opens in any image viewer that does not yet support WebP.
- A 2.4 MB JPG holiday photo converted to WebP at quality 0.8 drops to roughly 700 KB — about a 70 percent saving — while looking the same on screen.
- A flat PNG logo converted to WebP shrinks because WebP compresses solid UI colors far more efficiently than PNG, and you can keep transparency.
Common use cases
- Converting WebP images downloaded from the web into PNG or JPG so they upload to a form, marketplace, or design app that rejects WebP.
- Turning heavy JPG and PNG photos into smaller WebP files to speed up a website and improve Core Web Vitals.
- Making a quick PNG copy of a WebP graphic to drop into a slide deck or document.
- Light tasks where you want a smaller image but do not want to send private screenshots or client mockups to a stranger's server.
Why use this one
Most online WebP converters upload your file to their server before converting it. This one does not — the conversion runs entirely in your browser with a canvas, so the image never leaves your device. It is also a single two-way page rather than a maze of near-identical pages: you convert WebP to PNG or JPG and PNG or JPG to WebP in the same place. You get a live original-versus-output size readout instead of a vague badge, a real quality slider for the lossy formats, and no watermark, sign-up, or daily limit.
It is part of a small image toolkit. To shrink a file at its current format, use the Image Compressor; to change pixel dimensions, reach for the Image Resizer; and to inline a graphic directly in code, use Image to Base64.
Frequently asked questions
Are my images uploaded to a server?
No. The conversion runs entirely in your browser using an HTML canvas. Your image is decoded, redrawn, and re-encoded on your own device, so the file is never uploaded, stored, or logged. Closing the tab leaves nothing behind.
Can it convert both WebP to PNG/JPG and PNG/JPG to WebP?
Yes. This is a two-way converter. Drop in a WebP and choose PNG or JPG to convert out of WebP, or drop in a PNG or JPG and choose WebP to make a smaller modern file. The tool picks a sensible default direction based on what you add.
Will WebP really make my file smaller?
Usually, yes. WebP typically produces files 25 to 35 percent smaller than a comparable JPG and far smaller than PNG for photos and detailed images. The tool shows the original size next to the new size so you can confirm the saving before you download.
Why is the WebP version sometimes larger than the original?
If your source is an already tiny PNG (for example a flat icon) or a heavily compressed JPG, re-encoding it as a high-quality WebP can be slightly bigger. Lower the quality slider, or keep the original — the size readout tells you honestly which is smaller.