How do I convert PNG to WebP?

Drop PNG files into the converter above. They become WebP files in your browser; download each one or the whole batch as a ZIP.

Does PNG to WebP keep transparency?

Yes. WebP supports an alpha channel, so transparent backgrounds remain transparent.

How much smaller will my files be?

It depends on the image, but screenshots and illustrations commonly shrink by half or more. The converter shows the exact size change for every file.

Can I use WebP images in emails?

Not reliably — several email clients still lack WebP support. Use PNG or JPG for email campaigns and WebP for websites.

Are my images uploaded anywhere?

No. Conversion runs entirely in your browser with the Canvas API. Files never leave your device, so the tool is safe for private photos, client work and confidential screenshots.

Free tool

PNG to WebP converter

Shrink PNG graphics and screenshots into WebP while keeping transparent backgrounds. Batch convert, compare sizes and download — everything stays on your device.

Runs entirely in your browser — nothing is uploaded.

Converting PNG → WebP

Guide

PNG to WebP: smaller files, transparency intact

WebP is one of the few formats that keeps an alpha channel while compressing far better than PNG, so it is ideal for web logos, UI screenshots and illustrations.

Transparency is preserved

Unlike JPG, WebP stores transparent pixels, so cut-out logos and icons keep their clean edges after conversion.

Dramatically lighter screenshots

Large PNG screenshots and illustrations often shrink by 50–80% as WebP, speeding up docs, landing pages and blog posts.

When to keep PNG

Keep PNG when you need guaranteed pixel-perfect output, an editing master, or an image for email clients that cannot display WebP.

Works with your CMS

WordPress, Shopify, Webflow and most site builders accept WebP uploads, so you can swap PNGs without changing your design.

How to convert PNG to WebP

Drag your PNG files onto the drop area, or click it to pick them.
Each image converts to WebP instantly — the new size appears beside it.
Download files one by one, or click Download all as ZIP.

Need the file under a size limit too? Run it through the Image Compressor to hit 100KB, 200KB or 500KB. Browse every utility in Mailvern's free tools.

Converters

Other image conversions

Each converter runs on the same private, in-browser engine.

Image ConverterConvert any JPG, PNG or WebP image to another format in batches.JPG to PNG converterTurn JPEG photos into lossless PNG files.PNG to JPG converterShrink PNG files into universally supported JPGs.JPG to WebP converterCut JPEG photo sizes for faster web pages.WebP to JPG converterMake WebP downloads open in any app.WebP to PNG converterLossless PNGs from WebP, transparency kept.

FAQ

Frequently asked questions

Everything people usually ask about this tool.

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