WebP to PNG Converter

WebP is efficient for web delivery and supported by all modern browsers, but many design tools, email clients, and print pipelines still expect PNG or JPEG. Adobe Photoshop added WebP support in 2022, but older versions cannot import it. Microsoft Paint, GIMP, and many screenshot annotation tools also struggle with WebP. Converting WebP to PNG gives you a universally compatible file for editing, printing, or sharing with clients who may not have updated software.

This tool loads your WebP file using the browser's native Image or createImageBitmap decoder, draws the decoded pixels onto an HTML5 canvas element at the image's native dimensions, then exports the canvas as a PNG blob using canvas.toBlob('image/png'). PNG uses DEFLATE lossless compression, so the RGB and alpha channel data from the WebP are preserved exactly. No data is uploaded to a server - the entire conversion happens in your browser tab.

Because PNG is lossless and does not use the same predictive compression as WebP, the resulting file is usually 2-4× larger than the original WebP. This is expected: PNG stores raw pixel data with lossless compression, while WebP (especially lossy WebP) uses more sophisticated encoding. The larger PNG is the price you pay for editing compatibility. If you need to further edit the image, PNG is a better intermediate format than lossy JPEG because it will not add compression artifacts on every save.

The conversion runs in the main thread of your browser tab. Very large images (10+ megapixels, or WebP files that decode to huge canvas sizes) may allocate several hundred megabytes of memory for the canvas bitmap. If the browser throws an out-of-memory error, try resizing the WebP first with the Image Resizer & Compressor tool before converting to PNG. Mobile browsers and older laptops are more likely to hit memory limits.

Worked example: A marketing team downloads WebP images from a website for use in a print brochure. Their print designer uses an older version of InDesign that cannot import WebP. Converting the WebP files to PNG ensures the images open in InDesign without errors. The PNGs are larger (2 MB vs 500 KB), but file size does not matter for print production - compatibility matters. After the brochure is printed, the team can delete the large PNG intermediates and keep only the original WebP files for web use.