PNG to WEBP Converter
Need to convert this file type? Drop it below — or drop any other file and we'll auto-switch. Outputs are auto-deleted after 2 hours; share links expire after 4.
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Drop multiple images to combine them into one PDF, Word document, or PowerPoint presentation — or convert each image separately.
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Convert PNG to WEBP online
Convert PNG to WebP to cut file size without losing the transparency. WebP keeps a full alpha channel and is encoded here at quality 90 with compression method 6 — the slowest, most thorough setting — which usually produces a file well under half the size of the PNG.
When should you convert PNG to WEBP?
- Shrink logos, icons, and UI assets for a website
- Keep a transparent background while reducing weight
- Speed up a page that is loading heavy PNG screenshots
- Replace PNG assets without touching your markup's alt text or layout
Before you convert
Transparency survives
Unlike JPG, WebP stores a full alpha channel. This is the conversion to reach for when someone tells you to 'just use JPG' and your image has a cutout.
Not for archival masters
WebP's default mode is lossy. Keep the PNG if this is the source file you will edit and re-export from.
What happens to your file
WebP is encoded at quality 90 with compression method 6, the slowest and most thorough setting, which is why WebP output is typically smaller than the JPG or PNG it came from at comparable quality.
Settings this conversion runs with
| Engine | Pillow (Python Imaging Library) |
|---|---|
| Quality | 90 by default |
| Effort | method 6 — highest compression effort |
What changes
- Nothing in the picture is resampled unless you ask for it — resize, crop-to-aspect, and background removal are opt-in, so a plain PNG to WEBP keeps the original pixel dimensions.
About PNG and WEBP files
PNG image
Strengths
- transparent backgrounds
- sharp text and lines
- lossless quality
Limitations
- larger files than JPG for photos
- no animation
WebP image
Strengths
- smaller than PNG and JPG
- supports transparency
- supports animation
Limitations
- limited support in older apps
- not ideal for print
PNG vs WEBP
| Format | PNG | WEBP |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| Best for | screenshots, logos and icons | fast-loading websites, modern web graphics |
Guides for this conversion
- Why your PNG turned white: transparency, explained
Which image formats keep a transparent background, which ones paint over it, and exactly what happens to those pixels during a conversion.
- WebP vs AVIF vs JPEG: which to ship in 2026
Three image formats, three different trade-offs between file size, compatibility, and encoding time. A practical comparison with a straight recommendation.
Related tools
Frequently asked questions
- What happens to the image when you convert PNG to WEBP?
- WebP is encoded at quality 90 with compression method 6, the slowest and most thorough setting, which is why WebP output is typically smaller than the JPG or PNG it came from at comparable quality.
- What should you know before converting PNG to WEBP?
- Nothing in the picture is resampled unless you ask for it — resize, crop-to-aspect, and background removal are opt-in, so a plain PNG to WEBP keeps the original pixel dimensions.
- Is this PNG to WEBP converter free?
- Yes. You can convert PNG to WEBP online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Will converting PNG to WEBP reduce quality?
- WEBP uses lossy compression, so the file can get smaller while some visual quality may change.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.