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ConvenTools

PNG to WebP Converter

Runs in your browser — your files never leave your device

Convert PNG images to WebP right in your browser — much smaller files that keep transparency, perfect for faster websites. Batch convert with nothing uploaded.

Convert to
Drop images here, or click to choose
Converted on your device — nothing is uploaded.

How to use it

  1. 1
    Add your PNG files

    Drag PNG images onto the drop zone or click to choose.

  2. 2
    Set the quality

    WebP is selected by default — adjust the quality slider for the size you want.

  3. 3
    Convert locally

    Each PNG is re-encoded to WebP on your device, one at a time, with a progress bar.

  4. 4
    Download

    Save each WebP, or download the whole batch as a ZIP.

Smaller images, transparency intact

WebP typically produces far smaller files than PNG at similar quality, and it supports an alpha channel — so logos, icons and graphics keep their transparency while loading faster on the web.

Tune it, locally

Use the quality slider to balance size against fidelity. Everything is encoded on your device with WebAssembly — no upload, no quotas, no watermarks.

Frequently asked questions

Are my PNG files uploaded to a server?

No. Conversion runs entirely in your browser; files never leave your device.

Does WebP keep PNG transparency?

Yes. WebP supports an alpha channel, so transparency is preserved during conversion.

How much smaller will the WebP be?

Often much smaller than the PNG at comparable quality — the exact savings depend on the image and your quality setting.

Is WebP supported everywhere?

All modern browsers support WebP. For older apps that don’t, convert to PNG or JPG instead.

Can I convert a batch?

Yes — add many files and download them together as a single ZIP.

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