pdf24 tools WebP to PNG: lossless PNG files with transparency kept

What does pdf24 tools WebP to PNG keep from the original?

pdf24 tools WebP to PNG keeps the exact pixel size, the colours as decoded by the browser and the alpha channel, so transparent and semi-transparent areas stay transparent. The PNG is written losslessly; it adds no new compression artefacts, and a lossless WebP converts into a PNG with identical pixels.

What cannot be kept is information that is not pixels: animation frames beyond the first one and any metadata. A lossy WebP stays as detailed as it was; converting does not restore detail removed when the WebP was made, it only stops further loss.

“It supports image compression (both lossy and lossless), as well as animation and alpha compositing.”

Why is a PNG from pdf24 tools WebP to PNG so much larger?

pdf24 tools WebP to PNG output is larger because PNG stores pixels without loss, while most WebP pictures on websites use lossy compression tuned for photos. For flat graphics such as logos and icons the difference is small; for photos it is large, 97.5 KB of PNG against 7.8 KB of WebP in our measurement.

The PNG converter has no quality setting because lossless output has nothing to tune. Choose PNG for graphics and editing, JPG for photos that only need to be shared.

Is pdf24 tools WebP to PNG private?

pdf24 tools WebP to PNG is private because no picture leaves your device. The browser reads the files with the File API, decodes them with its built-in WebP support and writes the PNG with its canvas encoder. The result line confirms 0 bytes uploaded, nothing is stored, and the page works offline once loaded.

• No account, no watermark, no limit on files.
• Several pictures download as one ZIP file.
• Pictures for a document: WebP to PDF.
• The other direction: PNG to WebP makes files smaller.

pdf24 tools WebP to PNG: where WebP files come from

Most WebP files on a computer or phone were never chosen by their owner; they arrived from the web.

Large websites, online shops and image search results serve pictures as WebP to load faster, so right-click › Save image as stores a .webp file. Sticker packs in messaging apps are often WebP with a transparent background. Screenshot tools and browser extensions sometimes save WebP too. In all these cases the picture is fine on the web, but a slide program, a label printer, an embroidery or cutting machine, or a print-on-demand shop may ask for PNG.

For stickers and logos the conversion is the cleanest possible path: transparent edges stay soft, and the graphic can be resized or placed on any colour afterwards. For photos saved from a website, think about the purpose first. If the photo only needs to open on another device, JPG is lighter; if it will be edited, cut out or combined with other layers, PNG avoids the extra compression a JPG would add each time you save it.

pdf24 tools WebP to PNG on phones and computers

The page works in Chrome, Edge, Firefox and Safari on every major system.

On Android and desktop Chrome, pictures saved from websites are often WebP; pick them from Downloads. On iPhone and Mac, Safari decodes WebP too, so the conversion works the same way. Our test picture took 0.1 s on a laptop; phones are a little slower, and large batches of big pictures need memory, so convert them in groups if a phone struggles.

PNG has been an open standard since 1997 and is published both by the W3C and as ISO/IEC 15948. That long history is the reason it works in practically every program, from old office suites to new design tools, and why it is a safe long-term format for graphics you want to keep. WebP is newer and smaller, and ideal on websites, but PNG remains the format to hand to a designer, a printer or a colleague with older software.

File names stay recognisable: logo.webp becomes logo.png, and a batch keeps each original name inside the ZIP, so you can match every PNG with its source at a glance.