⚡ Up to 80% Smaller Files

PNG to WebP Converter

Convert PNG to WebP. 80% Smaller Files.

WebP delivers dramatically smaller file sizes than PNG with virtually identical visual quality — convert instantly in your browser.

Drag & Drop Files Here

or click to browse from your device

Accepted: png

Tool Options

Quality80%

WebP is Google's modern image format designed for the web. It delivers file sizes 25-80% smaller than PNG while maintaining excellent visual quality — including support for transparency.

Our converter runs entirely in your browser. No server uploads, no waiting, no limits. Drop your PNGs and get optimized WebP files in seconds. Perfect for improving Core Web Vitals and page load performance.

Why Convert PNG to WebP?

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Dramatically Faster Page Loads

WebP files are 25-80% smaller than PNG equivalents. For a typical website with 20 images, switching from PNG to WebP can reduce total page weight by several megabytes — directly improving Largest Contentful Paint (LCP) scores.

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Keeps Transparency Intact

Unlike JPG, WebP fully supports alpha transparency. Your transparent PNGs convert to transparent WebPs with no quality compromise — perfect for logos, icons, and UI elements.

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Better Core Web Vitals

Google recommends WebP for optimal web performance. Smaller images mean faster LCP, lower bandwidth usage, and better SEO rankings. WebP is now supported by 97%+ of browsers globally.

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Zero Server Uploads

Your PNG files never leave your device. The browser's native Canvas API handles the WebP encoding locally. Complete privacy, every time.

Who Uses PNG to WebP Conversion?

Built for professionals who need speed, privacy, and quality.

Web developers optimizing images for Core Web Vitals and PageSpeed scores
WordPress site owners reducing page weight for faster load times
E-commerce teams preparing product images for maximum performance
UI/UX designers exporting icons and assets in modern formats
SEO professionals improving page speed rankings with optimized images

Why use FastCompressor Desktop for png to webp converter?

Online tools are great for quick, single-image edits. But when you need to process hundreds of files or maintain strict privacy, native software is the only way to go.

Feature

Desktop App

Online Tools

Upload Required

Internet Required

Batch Compression

Unlimited

Usually capped

Folder Support

Privacy

100% Local

Uploaded to servers

Large Files

No limits

Strict limits

Download for Windows

How to Convert PNG to WebP

Drop Your PNGs

Drag and drop up to 10 PNG files into the converter, or click to browse from your device.

Set Quality Level

Adjust the quality slider — lower values give smaller files, higher values preserve more detail. 80% is a great default.

Download WebP Files

Hit Process and download your optimized WebP images. Individual downloads or batch save.

Frequently Asked Questions

Yes — WebP is supported by Chrome, Firefox, Safari, Edge, and Opera. Global browser support is over 97%. The only holdout is very old browsers (IE11, which has <0.5% market share).

Yes! WebP supports both lossy and lossless compression with full alpha transparency. Your transparent PNGs will convert to transparent WebPs.

Typically 25-80% smaller than the original PNG, depending on the image content and quality setting. Photos see the biggest reductions; simple graphics with few colors see smaller but still significant savings.

Yes. WordPress has supported WebP uploads since version 5.8 (July 2021). Most modern themes and plugins handle WebP natively.

At 80% quality, the difference between PNG and WebP is virtually invisible to the human eye. Even at 70%, most images look identical. You can use the quality slider to find your preferred balance.

Supercharge your website speed

Convert your PNGs to WebP above for instant, massive file size reductions — or get the Pro app for automated workflows.

Download for Windows See Pricing