PNG to WebP converter
Convert PNG images to WebP in your browser.
Processed in your browser. This file is converted on your device and is never uploaded.
Converter
.png up to 50 MB. You can also drag a file here.
No file selected.
About this tool
PNG is what screenshots, logos, and exported graphics are usually saved as. WebP is typically 25 to 35 percent smaller than JPEG at the same visible quality, and unlike JPEG it keeps transparency.
This tool converts PNG to WebP entirely in your browser. The image is decoded, drawn, and re-encoded on your device, so nothing is uploaded and the size of the file costs you no waiting.
Supported formats and limits
- Input
- .png
- Output
- .webp (image/webp)
- Output name
- The original name with the new extension, for example photo.png becomes photo.webp.
- File size limit
- 50 MB
- Processing
- In your browser. The file is not uploaded.
PNG against WebP
| Feature | PNG | WebP |
|---|---|---|
| Compression | Lossless | Lossless or lossy |
| Colour | 8 bits per channel | 8 bits per channel |
| Transparency | Full alpha channel | Full alpha channel |
| Animation | No | Yes |
| Keeps EXIF | Yes | Yes |
| Browser support | Every browser since 1997 | Chrome 32, Firefox 65, Safari 14 |
| Size of a photograph | 3 to 5 times a JPG | 25 to 35 percent smaller than a JPG |
| Published | 1996 | 2010 |
When you would want this
The file has to be smaller
A photograph as WebP is roughly 0.65 to 0.75 times the size of the same picture as JPG, against 3 to 5 for PNG. On a page that matters twice: less to download, and a faster largest-contentful-paint, which is one of the things a search engine measures. For an email attachment or an upload limit it just matters once.
How to use it
- Choose a .png file, or drag one onto the page.
- Pick a quality level.
- Optionally set a width or height to resize at the same time.
- Select Convert, then download the WebP file.
Limitations
- The output is lossy WebP, so it is not a byte-exact copy of the original.
- A few older programs, email clients, and design tools still cannot open WebP.
- Metadata is not preserved. EXIF fields, including camera settings and GPS location, are dropped, which is a privacy benefit but worth knowing if you rely on them.
- Colour profiles are not preserved, so an image in a wide-gamut profile may shift slightly.
- The camera's EXIF orientation is applied, so a photo taken sideways comes out upright rather than rotated.
Common problems
The WebP will not open in an older program
WebP arrived long after PNG, and software written before it existed has no way to read it. Browsers gained support at Chrome 32, Firefox 65, Safari 14, and anything predating those versions sees a file it does not recognise.
Convert to JPG instead when the file has to open anywhere at all. Keep WebP for the web, where you know what is reading it.
The camera settings and GPS location are gone from the WebP
PNG carries an EXIF block and this conversion does not move it across. The image is decoded to pixels, drawn, and encoded again as WebP, and the metadata does not survive that round trip.
Keep the original PNG if you need those fields. If you were converting in order to strip location data before publishing, this is the behaviour you wanted.
Other ways to do this
The program already on your computer
GIMP, Photoshop 23 and later, recent versions of Preview will open a PNG and save it as WebP, and if you have one of them installed and only one file to convert, that is a perfectly good answer. It stays on your machine the same way this does. Where it stops being convenient is a folder of forty files, or a machine you do not own.
ImageMagick, from a terminal
One command converts a directory: magick mogrify -format WebP *.PNG. If you already have it installed this is the fastest way to do a hundred files, and it scripts. It is also a dependency to install and a syntax to learn, which is a poor trade for converting one image once.
An online converter that uploads
Most sites offering this send your file to a server, convert it there, and give you a link back. They can do formats a browser cannot, which is a real advantage. The cost is that your file was on somebody else's machine, governed by a retention policy you did not read. That is the whole difference here: this page converts PNG to WebP using code your browser already downloaded, so there is no server holding it afterwards.
Frequently asked questions
- Is my image uploaded?
- No. The conversion runs entirely in your browser. The image never leaves your device and no request carrying it is made.
- Which quality should I choose?
- 85% is a good default for photographs and is usually indistinguishable from the original at normal viewing size. Lower settings become visible on sharp edges and in smooth gradients such as skies.
- Will the WebP be bigger or smaller than the PNG?
- Smaller or larger depending on the pair, and here the arithmetic is public: a photograph as PNG runs 3 to 5 times the size of the same picture as JPG, and as WebP it runs 0.65 to 0.75. The comparison table above states both, so you can tell before converting rather than after.
- Will the WebP open everywhere?
- Not everywhere, and it is worth knowing before you send one. Browsers read WebP from the versions listed in the table above, and software older than that has no way to open it. For anything going to a person or a system whose tools you do not control, PNG or JPG remains the safe answer.
- Can I resize while converting?
- Yes. Set a width, a height, or both. With proportions kept, one dimension is derived from the other, and giving both fits the image inside that box rather than distorting it.
- Do I need to install anything or create an account to use PNG to WebP converter?
- No, to all of it. PNG to WebP converter runs inside the browser you already have, with no sign-up, no download, no watermark on the result, and no cap on how many files you convert. There is nothing to uninstall afterwards either, because nothing was installed.
- Does PNG to WebP converter work offline?
- Once the page has loaded, yes. The conversion runs on your device, so it needs no connection to do the work. The first visit fetches the page and the code that does the converting; after that a lost connection stops nothing, and a converted file appears exactly as it would online.
- How large a file can PNG to WebP converter handle?
- The limit is 50 MB. It is a deliberate one rather than a technical ceiling: the real constraint is memory, and a file that decodes to more than the device can hold fails in a way that is hard to explain. Phones run out well before laptops do, which is why the limit is set where it is.
- Can I convert several files at once with PNG to WebP converter?
- Not here: this tool takes one file at a time, because what it does depends on choices you make about that particular file. Convert them one after another, or look at the batch converters in the same category, which are built for a folder at a time.