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Convert PNG to WebP Online — Smaller Files, Free

Convert PNG to WebP in your browser — free, no signup. WebP keeps transparency and cuts file size up to 80% for faster websites.

Your files are 100% private. Processed in your browser — never uploaded.

Need help? Check our guide

80%

Lower quality = smaller size

Advanced (optional)

Target file size, watermark & metadata control are available on Pro.

Pro Tip

WebP gives you the best quality at smaller file sizes. Perfect for websites and faster loading.

Quick answer

BatchSet's PNG to WebP converter compresses PNG images into WebP for free in your browser — often 60–80% smaller while keeping transparency. Smaller images load faster, which improves page speed and Core Web Vitals.

How to use the PNG to WebP

Three quick steps — free, private, right in your browser.

1

Add your PNG

Drag in a .png file or click to browse — it stays on your device.

2

Set the quality

WebP supports lossy and near-lossless; higher = better, larger.

3

Download the WebP

Often 60–80% smaller, with transparency intact.

Features

  • PNG → WebP, up to 80% smaller
  • Keeps transparency
  • Quality control (10–100%)
  • 100% private — no upload
  • Faster page loads
  • No signup, no watermark

Use Cases

  • Shrink heavy PNGs for websites
  • Faster Shopify & WordPress pages
  • Keep transparent graphics but smaller
  • Cut bandwidth and storage

How the PNG to WebP compares

AspectPNG (source)WebP (result)
File sizeLargeUp to 80% smaller
TransparencySupportedSupported
CompressionLosslessLossy or lossless
Page speedSlowerFaster
Browser supportUniversalAll modern browsers
Convert PNG to WebP to shrink files for the web while keeping transparency.

Frequently asked questions

How much smaller is WebP than PNG?+

Typically 60–80% smaller, especially for detailed or photographic images — while keeping transparency. Smaller files load faster and improve Core Web Vitals.

Does WebP keep transparency like PNG?+

Yes. WebP supports an alpha channel, so transparent PNG areas remain transparent in the WebP.

Will I lose quality?+

You decide with the quality slider. At high settings WebP is visually near-lossless, so most images look identical at a fraction of the size.

Do all browsers support WebP?+

Yes — every modern browser (Chrome, Edge, Firefox, Safari) displays WebP, which is why it's the recommended format for the web.

Is my PNG uploaded?+

No. Conversion happens entirely in your browser, so your file never leaves your device.

Related free tools

Image Converter

Convert JPG, PNG & GIF to WebP free — no upload, no signup. Cut image size up to 80% for faster Shopify & WordPress pages. Compress & resize too.

Open

PNG to JPG

Convert PNG to JPG in your browser — free, no signup. JPG makes photo-heavy PNGs much smaller; transparent areas flatten to white.

Open

Bulk Converter

Convert hundreds of JPG, PNG & WebP images in one click. Runs in your browser — no signup, no server upload. Download all as a ZIP. Free.

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See also

WebP for SEO & Core Web VitalsHow to convert JPG to WebP

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