25 to 35 percent smaller
WebP compresses better than PNG on the same image, and its lossy mode shrinks files 60 to 70 percent while keeping transparency.
100% browser-based · No upload · Keeps transparency
Convert PNG to WebP Online: Smaller Files, Same Transparency
- No signup
- Works on mobile
- Nothing uploaded
90% is visually identical for most images. Lower it for smaller files.
Drop your PNG files here
or drag and drop them anywhere in this box
Select PNG filesUp to 30 files • Max 25MB each • Files never leave your browser
A PNG to WebP converter re-encodes a PNG into WebP, a modern format that runs 25 to 35 percent smaller while keeping the transparent background. Every conversion happens on your own device, so nothing is ever uploaded. Adjust quality or batch up to 30 files.
- 30
- Files per batch
- 25MB
- Max file size
- 100%
- In your browser
- 0
- Uploads to servers
WebP is an image format Google released in 2010, built on VP8 video compression, that stores images 25 to 35 percent smaller than PNG while keeping a full alpha channel. A PNG to WebP converter re-encodes a PNG into WebP so a website loads faster without losing the transparent background. Every current browser (Chrome, Firefox, Safari, and Edge) supports WebP, which is why it has become the default format for web images.
This converter uses the browser's native WebP encoder through the HTML5 Canvas API, so the file is processed on your device and nothing uploads. A quality slider controls the trade-off between size and detail, and the transparent background survives the conversion intact. WebP suits logos, icons, UI assets, and photographs alike, since it offers both a lossless mode that matches PNG exactly and a lossy mode that shrinks files much further.
This page covers how to convert PNG to WebP, how much smaller WebP is, whether transparency is preserved, browser support, the effect on site speed, and when PNG is still the safer choice. The tool sits at the top; add a PNG to begin.
Why convert PNG to WebP?
WebP was built to make web images lighter without giving up the transparency PNG is known for.
Keeps the alpha channel
Unlike JPG, WebP holds a full alpha channel, so a transparent logo stays see-through while weighing less.
Faster pages, better ranking
Lighter images improve Largest Contentful Paint, a Core Web Vitals ranking signal, so swapping PNG for WebP speeds up an image-heavy page.
Private by design
The browser's own WebP encoder runs on your device through the Canvas API. Nothing uploads, so files stay yours.
Batch up to 30 files
Drop a set of PNG assets and convert them in one pass, then grab every WebP at once.
Free, no watermark
No account, no email, no daily cap. Processing happens locally, so there's nothing to pay and nothing added to your image.
How it works
- 1
Drop in your PNG files
Drag your PNGs into the converter or browse your device. Logos, icons, and photos all work.
- 2
Set quality and convert
Leave quality at 90 for near-lossless output, or lower it for smaller files, then convert. Transparency is kept.
- 3
Download your WebP files
Save each WebP or grab the batch at once. Nothing was uploaded during conversion.
PNG vs WebP: what changes
WebP keeps everything PNG does, transparency included, and adds a lossy mode PNG lacks, so files land smaller.
| Aspect | PNG | WebP |
|---|---|---|
| File size | Baseline | 25 to 35 percent smaller |
| Transparency | Full alpha channel | Full alpha channel |
| Compression modes | Lossless only | Lossless and lossy |
| Browser support | Universal | All modern browsers |
| Best for | Masters, wide compatibility | Web delivery, faster pages |
| Animation | No | Yes |
Frequently asked questions
How do I convert PNG to WebP?
Drop your PNG into the converter, set the quality, and click Convert to WebP. It runs in your browser and keeps the transparent background.
How much smaller is WebP than PNG?
Typically 25 to 35 percent smaller at the same quality, and 60 to 70 percent smaller in lossy mode while still holding transparency.
Does WebP keep the transparent background?
Yes. WebP has a full alpha channel, so a transparent PNG stays see-through as WebP, unlike JPG, which flattens transparency.
Do all browsers support WebP?
Yes for modern browsers. Chrome, Firefox, Safari, and Edge all support WebP. Some older desktop software and upload forms still do not.
Is WebP better than PNG for a website?
For speed, yes. Smaller WebP files improve Core Web Vitals, so pages load faster. Keep a PNG fallback for older clients.
Can I convert many PNGs to WebP at once?
Yes. Drop up to 30 files per batch, each up to 25MB, and Download All collects every result together.
Will converting to WebP lose quality?
At quality 90, no visible loss. Lossless WebP matches PNG exactly, while lower quality trades a little detail for a smaller file.
Are my files uploaded when converting?
No. The browser's WebP encoder runs on your device, so files never reach a server. Go offline after loading and it still works.
A PNG to WebP converter re-encodes a PNG into Google's WebP format, cutting the file 25 to 35 percent while keeping the alpha channel that PNG provides. WebP suits web delivery, improves Largest Contentful Paint, and every modern browser reads it. This tool uses the browser's own encoder on your device, so nothing is ever uploaded, and it batches up to 30 files with a quality control. Add a PNG above to make a smaller, transparency-preserving WebP in seconds.
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