Why convert PNG to WebP?

WebP files are typically 25–35% smaller than PNGs with equivalent visual quality. This means faster page loads, less bandwidth usage, and reduced storage costs — especially important for websites and web applications.

Does converting to WebP reduce quality?

At quality settings of 80–90%, the difference from the original PNG is imperceptible. You can adjust the quality slider to find the perfect balance between file size and visual fidelity.

What happens to transparency?

WebP fully supports transparency (alpha channel). Unlike JPG, transparent areas in your PNG will be preserved in the WebP output.

Can I convert multiple PNG files at once?

Yes. Drop or select as many PNG files as you need. FileKit processes them all in your browser and lets you download individually or as a ZIP.

Is WebP supported by all browsers?

Yes. All modern browsers — Chrome, Firefox, Safari, and Edge — support WebP. It is now the most widely adopted modern image format on the web.

Is there a file size limit?

Each file can be up to 50 MB. Since processing happens entirely in your browser, very large files may take a few extra seconds.

Will my images be uploaded to a server?

No. FileKit processes everything locally in your browser using the Canvas API. Your images stay on your device.

How much smaller will my files be?

Typical PNGs shrink by 60–80% when converted to WebP at 85% quality. Photographs see the largest reductions; images with large flat-color areas also compress well.

PNG to WebP

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WebP quality

90%

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Max 50.0 MB per file·Supports: PNG

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How PNG to WebP conversion works

WebP is a modern image format developed by Google that delivers significantly smaller file sizes than PNG while maintaining excellent visual quality. FileKit decodes each PNG using your browser's built-in image engine, then re-encodes the pixels as WebP at your chosen quality level. WebP supports both lossy and lossless compression — this tool uses lossy mode for maximum size reduction. The entire process runs locally — your images never leave your device.

How to Convert PNG to WebP

1
Upload PNG images
Drag and drop one or more .png files into the upload area. You can also click to browse and select files from your device.
2
Adjust quality (optional)
Use the quality slider to set WebP compression. Higher values keep more detail; lower values produce smaller files. 85% is a great default.
3
Download converted WebP files
Each PNG is converted to WebP in your browser. Download files individually or grab all of them at once as a ZIP archive.

Frequently Asked Questions

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FileKit processes every file directly in your browser using JavaScript and WebAssembly. Your documents, images, and data never leave your device — there is no server upload, no cloud storage, and no account required. What happens in your browser stays in your browser.

100% client-side processing
No server upload — ever
No account or signup needed
Works offline after first load

PNG to WebP

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How PNG to WebP conversion works

How to Convert PNG to WebP

Upload PNG images

Adjust quality (optional)

Download converted WebP files

Frequently Asked Questions

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