PNG to WebP Converter
Best for web developers replacing PNG assets with WebP to cut page weight while keeping transparency.
Drop files or a folder here
or click to browse · paste from clipboard
Accepts .PNG · Up to 1,000 files
PNG to WebP with full transparency support. Lossy or lossless — typically 60–80% smaller than the original PNG.
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust the quality slider and check the quality in real time to see if the image quality is acceptable. Choose between lossy or lossless, set a custom dimension (optional), or strip metadata.
Click Convert
Everything runs in your browser via WebAssembly. PNG to WebP Converter happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
What is PNG?
PNG (or Portable Network Graphics) is a legacy image format created in 1995 by the PNG Development Group as a free, open-source replacement for GIF. People opt for this format when they need clear, crisp graphic images with sharp edges, like logos, screenshots, or icons with a transparent background.
PNG is a lossless format, meaning every pixel is encoded as it was drawn. Nothing looks blurry, even when users zoom in. One downside is that PNG files are large, and using them on websites takes up more space, which can increase web hosting costs.
What is WebP?
WebP is a relatively new format created by Google. It was developed to address the issues of legacy formats like PNG. WebP has the same properties as PNG, but is encoded more efficiently, resulting in a smaller footprint (or file size). Like PNG, it supports transparent backgrounds. Nearly every major browser on Windows, Mac, Android, or iOS (Chrome, Safari, Firefox, or Edge) supports WebP images, so this means that even if you swap from PNG to WebP, nearly everyone browsing on your website will see these images without any special software.
Why convert PNG to WebP?
The only reason is file size. A WebP file, at the same dimensions, even at 80% quality, can be up to 90% smaller. So a 2 MB PNG graphic converted to WebP will shrink down to 251 KB, or an 88% reduction. This is a significant decrease and helps images load faster and use up less storage space on your web hosting service. You can convert PNG graphics to WebP to free up space on your hard drive, so save backups as WebP in cloud storage and pay less.
For website owners, faster-loading pages can boost user engagement and rankings, since visitors are more likely to engage with a fast-loading website. You can load graphic files with a transparent background, like logos, without the bloat.
When should I keep PNG instead?
Use PNG if you need to send a graphic or photo to someone who uses old software or a phone that cannot read WebP, or if you need to edit the graphic, keep the original PNG file. Otherwise, use WebP for images you’ll post on your website.
Frequently asked questions
Yes. PNG supports lossy and lossless compression and full alpha transparency. A PNG file converted to WebP will retain the same transparent background but with a much smaller file size. However, for images with faded edges (e.g., shadows or smooth logo outlines), WebP files may leave a faint smudge or outline. One workaround is to turn on lossless mode, but it comes at the cost of a larger file size.
Lossy WebP, based on tests, can be between 35 and 70% smaller than a PNG file. With lossless WebP files, that can go up to 90% or more at 80% quality. Users will get the highest savings from photographs like landscape shots with lots of detail. Simpler graphic files like logos won’t gain as much savings. With ConvertYard, you’ll see the exact byte savings before you compress the file.
Use lossless mode for logos, icons, UI screenshots, or any image you plan to edit again. Lossless WebP preserves every pixel exactly and is still 25–35% smaller than PNG. Use lossy mode (the default) for photos, illustrations, and images destined for the web where a small quality trade-off is acceptable in exchange for much smaller file sizes.
Yes. Most modern browsers like Chrome, Edge, Safari (after 2020), and Firefox support WebP. So that’s around 97% of web traffic. However, some image editors and CMS platforms don’t support WebP, only PNG or other legacy formats like JPG; check the manual if you’re not sure. If you’re uploading these images on a modern CMS like WordPress, it will support WebP, but if you’re sending files to colleagues who may be using legacy software, using the PNG format will be safer.
Yes. You can convert batches up to 1,000 files. One limiting factor will be your computer’s memory. If you’re using an older laptop, you can want to limit it to batches of 100 to 200. If you’re converting large files, then limit them to batches of 25 to 50 so your computer doesn’t stall. The preview slider will only appear on the first three images as a safeguard to prevent the computer from locking up.