How to Convert PNG to WebP Without Losing Quality
Converting a PNG to WebP takes a few seconds, but a little care decides whether the result is a clean, tiny file or a blurry one. This guide walks through the process and the choices that matter.
Before you start
Find the best source you have. A conversion can only reduce detail, never restore it, so start from the original PNG rather than a copy that has already been compressed. Decide where the image will be used, because that tells you how large it needs to be and how much quality you need.
Step 1: Resize if the image is bigger than it needs to be
An image 4000 pixels wide displayed in a 800 pixel column wastes bandwidth in any format. Pick the largest width the picture will actually appear at, and double it if you want sharp rendering on high-density screens. In our PNG to WebP converter you can type that number into the max width box and it resizes while converting.
Step 2: Add your files
Drag your PNG files onto the converter, or tap to choose them. You can process up to 20 at once. The files are read by your browser, not uploaded.
Step 3: Choose a quality value
The quality slider controls the trade-off between size and fidelity.
- 90 to 100: for logos, screenshots with small text and images with hard edges.
- 80 to 90: a good default for photographs and illustrations.
- 60 to 75: acceptable for large background images and thumbnails where tiny flaws will not show.
Convert one file first, then compare it with the original at full size before you process the rest.
Step 4: Convert and review the sizes
After conversion each file shows its new size next to the old one. Most photographs shrink a lot. Very small or flat-color PNGs may shrink only a little, and occasionally a tiny file grows. When that happens, keep the original for that image.
Step 5: Download and name your files
Download files one by one or take the whole batch as a ZIP. Use clear names such as handmade-leather-wallet.webp rather than generic ones. Good file names and alt text help both accessibility and search.
Keeping transparency
WebP supports transparent backgrounds, so logos and cut-out products convert without a white box appearing. If you convert to JPG instead, transparency is lost, so avoid JPG for those files.
Using WebP on your site
Most modern content systems accept WebP uploads directly. If yours does not, you may need an update or a plugin. If you must support very old browsers, serve a fallback with the HTML picture element, offering a PNG or JPG alongside the WebP source.
Troubleshooting
- The file looks soft: raise the quality or convert from a larger original.
- The file did not shrink: lower the quality or accept that this image is already efficient.
- An error says WebP cannot be created: open the page in a current version of Chrome, Edge or Firefox.