PDFdays

    Convert PNG to WebP – Free Online

    Make PNG screenshots, logos and graphics much smaller by converting them to WebP, the modern image format for fast websites. Transparent backgrounds are kept, and your images never leave your device.

    PNG to WebP

    Shrink PNG images into smaller WebP files that keep transparency.

    Learn how your files stay private

    How to convert PNG to WebP

    1. 1

      Drag your PNG files into the box above, or click to choose them. You can add many at once.

    2. 2

      Click Convert. Each PNG is saved as a WebP at 92% quality, right in your browser.

    3. 3

      Download each WebP, or use Download all (ZIP) to get them together.

    Why use PDFdays for PNG to WebP?

    Much smaller files

    WebP files are usually much smaller than the same image as PNG, so pages load faster and use less data.

    Keeps transparency

    Logos, icons and cut-out images keep their transparent background.

    100% private

    Files are processed on your device and never uploaded.

    Instant

    No upload or queue — conversion starts right away.

    Batch convert

    Add as many files as you like, free.

    About the formats

    PNG (Portable Network Graphics)

    PNG uses lossless compression and supports transparency, so it is great for screenshots, logos, graphics and images with text.

    WebP

    WebP is a modern image format by Google that makes files smaller than JPG or PNG. Some older apps and editors still cannot open it.

    Frequently asked questions

    Usually yes. PNG is lossless, while PDFdays saves WebP at 92% quality, which usually makes files much smaller with little visible difference.

    Yes. WebP supports transparency, so transparent areas of your PNG stay transparent.

    Chrome, Edge, Firefox and Opera can create WebP files on Windows, Mac, Linux and Android. Safari on Mac, and browsers on iPhone and iPad, can open WebP but cannot create it yet, so use one of the other browsers there.

    No. PDFdays converts files directly inside your web browser, on your own device. Your files are never uploaded, so nobody else can see them.

    PDFdays sets no fixed limit. Because your own device does the converting, very large files or big batches depend on its memory — a computer handles more than an older phone.

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