PNG to WebP Converter
Drop in PNG images, set the quality and download much smaller WebP files in seconds.
WebP Settings
Lower is smaller. 75 to 85 suits most photos.
Quick answer: how to convert PNG to WebP
To convert PNG to WebP online, drop your PNG files into the box above, set the quality (80 is a good start) and click Convert to WebP. Each image is saved as a WebP, with transparency kept and the size saving shown beside it. It's free, needs no signup, and your files never leave your device.
- Drop or choose your PNG images.
- Set the quality slider.
- Click Convert to WebP.
- Compare sizes, then download each file or use Download all.
Shrink PNG images by converting to WebP
This PNG to WebP converter turns PNG files into WebP, a format built for smaller downloads and faster pages. PNG is lossless, which is why its files get big. WebP can store the same picture, including transparency, in far less space, and this tool lets you choose how much quality to trade for size. It then shows the PNG size next to the WebP size, so you can see what you saved. Everything runs in your browser. Nothing is uploaded.
Need to go the other way? Use the WebP to PNG Converter.
Why use this free online PNG to WebP converter
- You control the quality. A slider from 10 to 100 lets you pick the balance between size and detail.
- It shows the savings. Every result lists the PNG size, the WebP size and the percent change, even when WebP comes out larger.
- Transparency stays. Logos, icons and cut-outs keep their see-through areas.
- Batch friendly. Convert up to 30 PNGs in one run.
- Private. Files are processed on your device, with no upload wait.
- No signup, no watermark. Open the page and go.
How to convert PNG to WebP: step-by-step guide
Step 1: Add your PNG images
Drag files onto the dashed box, or click it to pick them. You can select up to 30. Click Add images in the sidebar to add more later. Files that aren't PNG, or are over 50 MB, are skipped, and the status line says how many.
Step 2: Set the quality
The slider starts at 80, which suits most photos and web graphics. Go lower, around 60 to 70, for small thumbnails or when file size matters most. Go higher, 90 or more, for screenshots, text and sharp-edged graphics where artifacts show easily.
Step 3: Convert
Click Convert to WebP. Images are processed one at a time, and each result appears with a checkerboard preview, its pixel size, and a PNG-to-WebP size comparison. If one file fails, the others still finish.
Step 4: Download
Click Download beside a result, or use Download all to save every file in turn. Names are kept, so logo.png becomes logo.webp.
Tips for best results
- Convert a single image first and zoom in. If edges look soft, raise the quality and run again.
- Too large in pixels? Reduce the dimensions first with Resize Image.
- Need maximum compatibility instead? Convert to JPG with PNG to JPG.
Key features and benefits
- Adjustable WebP quality from 10 to 100.
- Batch conversion of up to 30 PNG images.
- Transparency preserved through the alpha channel.
- Same width and height as the source image.
- PNG size, WebP size and percent change shown for each file.
- Checkerboard preview for transparent images.
- Per-file error messages, so one bad file doesn't stop the batch.
- Clear message if your browser can't create WebP files.
- Keyboard accessible, with labeled controls and large tap targets.
- Light theme with automatic dark mode.
Supported formats, specs and limits
| Item | Detail |
|---|---|
| Input | .png files, with or without transparency |
| Output | WebP, lossy, with alpha channel kept |
| Quality range | 10 to 100, default 80 |
| File size | Up to 50 MB per file |
| Batch | Up to 30 files per run |
| Animated PNG | First frame only |
| Browser requirement | A browser that can encode WebP, such as current Chrome, Edge or Firefox |
| Not supported | Metadata is not copied to the WebP; no ZIP download; no lossless WebP option |
For format background, see the Wikipedia pages on WebP and PNG.
Who uses a PNG to WebP converter
- Website owners: cut image weight to help pages load faster on slow connections.
- Bloggers and editors: shrink screenshots and graphics before publishing.
- Online sellers: trim product images for faster store pages.
- Developers: prepare icons, sprites and UI assets with transparency.
- Designers: deliver lighter exports to clients without opening an editor.
- Anyone short on storage: save space on a folder full of PNG screenshots.
Expert tips and common mistakes
Don't use WebP for everything
Tiny, flat graphics with few colors are already small as PNG. WebP can come out larger. The size comparison on each result tells you when to keep the PNG.
Keep your originals
WebP here is lossy. Once you save at a low quality, detail is gone for good, so keep the source PNG if you may need it later.
Check text and fine lines
Screenshots with small text show artifacts sooner than photos. If letters look fuzzy, raise the quality to 90 or higher.
Remember where WebP won't open
Some older software and a few upload forms still reject WebP. If you need a file that opens everywhere, convert back with the WebP to PNG Converter or use a JPG.
Shrink dimensions too
A 4000-pixel-wide image will stay heavy at any quality. Resize first, then convert, or run the result through Compress Image File.
Privacy and security
Your images are processed in your browser and are never uploaded. The page loads no external scripts, fonts or images, and it makes no network requests while you convert. The tool stores nothing in cookies or local storage. Closing or refreshing the tab clears your files and results from memory.
This tool vs. other ways to convert PNG to WebP
Each option has a place. Here's how they differ in practice:
| Factor | This browser tool | Desktop editors | Server-based sites |
|---|---|---|---|
| Setup | None, just open the page | Install an app; some need a plugin for WebP | None |
| Where files are processed | On your device | On your device | Usually on the site's server |
| Upload wait | None | None | Depends on file size and connection |
| Quality control | One slider | Detailed settings, including lossless | Varies |
| Batch conversion | Yes, up to 30 | Often, with actions or scripts | Varies, often limited on free plans |
| Cost | Free | Free or paid | Often free with limits or ads |
If you need lossless WebP or fine encoder settings, a desktop tool gives you more control. This page is faster for quick, private batch conversions.
Troubleshooting
"Your browser can't save WebP files"
Your browser's encoder doesn't support WebP. Open this page in current Chrome, Edge or Firefox and try again.
"Not a valid PNG image"
The file may be corrupted or renamed from another format. Open it in a browser to check it displays, or export it again from its source.
The WebP is bigger than the PNG
That happens with small, flat graphics. Keep the PNG, or lower the quality and try again.
The image looks blurry or blocky
The quality is too low. Raise the slider to 85 or higher and convert again from the original PNG.
"Image is too large to convert"
Your browser ran out of memory for that many pixels. Resize the image first, or use a computer.
Download all only saved some files
Your browser may block several downloads at once. Allow multiple downloads for this site, or download one at a time.
Glossary
- WebP
- An image format from Google that supports lossy and lossless compression, transparency and animation.
- PNG
- Portable Network Graphics, a lossless format with transparency support.
- Lossy compression
- Compression that discards some detail to make the file smaller. This tool saves lossy WebP.
- Lossless compression
- Compression that keeps every pixel exactly. PNG is always lossless.
- Alpha channel
- The part of an image that stores transparency.
- Compression artifacts
- Blocky or fuzzy patches that appear when quality is set too low.
Frequently asked questions
Is this PNG to WebP converter really free?
Yes. There is no fee, no account, no watermark and no daily limit. Convert up to 30 PNG files per run as often as you like.
Are my PNG files uploaded anywhere?
No. Your images are converted inside your browser and are never uploaded. The page makes no network requests while you convert.
Does WebP keep the transparency from my PNG?
Yes. WebP supports an alpha channel, so transparent areas of your PNG stay transparent. Logos and icons keep their clean edges.
What quality setting should I use?
Start at 80. Photos usually look fine from 75 to 85. For sharp graphics, text or screenshots, try 90 or higher. Lower values give smaller files but more visible artifacts.
Will the WebP be smaller than my PNG?
Usually, especially for photos. Simple graphics that PNG already compresses well can occasionally come out larger. The tool shows both sizes so you can compare.
Does converting PNG to WebP lose quality?
This tool saves lossy WebP, so a little detail is traded for a smaller file. At 80 or above most images look the same to the eye.
Which browsers can create WebP files?
This depends on your browser's built-in encoder. Current Chrome, Edge and Firefox can save WebP. If yours can't, the tool shows a clear message instead of giving you a wrong file.
Do I need to sign up or install anything?
No. There is no login, no download and no extension. Add your PNG files, click Convert to WebP and save the results.
Does it work on my phone?
Yes, if your phone's browser can encode WebP. Tap the box to pick images, convert and download. Very large PNGs are safer on a computer because phones have less memory.
Does it work offline?
Once the page has loaded, conversion needs no internet connection because it runs in your browser. You do need to be online to open the page the first time.
Convert your PNG to WebP now
You don't need an editor or an account to make your images lighter. Drop your files into this free PNG to WebP converter, set the quality and compare the sizes before you download. Scroll back up to the tool and try it on your own PNGs.