How to Convert PNG to WebP

Converting your PNG images to WebP takes just a few steps.

1. Upload your PNG images. Select one or more files from your device or drag them into the converter above.
2. Adjust the quality. The default setting is 85%, which offers a practical balance between image quality and file size. You can also enable Lossless WebP for logos, screenshots, and graphics.
3. Convert and download. Click Convert to WebP, review the resulting file sizes, and download each image separately or use Download All ZIP.

The converter supports up to 25 PNG images per batch, with a maximum file size of 25 MB per image. Images exceeding 24 megapixels cannot be processed to avoid excessive browser memory usage.

All conversions happen locally in your browser.

PNG vs. WebP: What’s the Difference?

PNG and WebP are popular image formats, but they handle compression differently.

PNG uses lossless compression, preserving the original image data without introducing compression artifacts. This makes PNG particularly useful for screenshots, logos, diagrams, and graphics containing sharp lines or text.

WebP supports both lossy and lossless compression. It can preserve transparency while producing smaller files in many situations.

For website owners, the main advantage is reduced image size without necessarily sacrificing noticeable visual quality.

However, WebP is not automatically smaller than PNG. Results depend on the original image, its complexity, and the compression settings.

For example, a large PNG screenshot might become significantly smaller after conversion, while a tiny, already optimized logo could produce a similar-sized or even larger WebP file.

You can learn more about the differences in our guide to image formats and their best uses .

What WebP Quality Should You Use?

The ideal WebP quality setting depends on the type of image.

For general website graphics, 85% is a practical starting point. It often provides a reasonable balance between file size and visual quality.

Lower quality settings typically produce smaller files, but compression artifacts may become visible around text, thin lines, or areas with strong color contrast.

Higher settings preserve more detail but can increase the resulting file size.

For logos, screenshots, diagrams, and other graphics where exact pixels are important, try Lossless WebP.

Lossless encoding preserves the source pixels rather than introducing lossy compression artifacts. However, the resulting image may be larger than one produced using lossy compression.

Our converter allows you to compare the original and converted file sizes before downloading the result.

Does PNG to WebP Preserve Transparency?

Yes. Both PNG and WebP support transparent backgrounds.

When you convert a transparent PNG using our tool, the transparent areas are preserved in the resulting WebP image.

This is particularly useful for logos, icons, overlays, and website graphics that need to appear on different background colors.

However, transparency and visual quality are separate considerations.

A lossy WebP image may preserve its transparent background while introducing minor compression artifacts around fine details or text.

If your image includes delicate edges, small typography, or precise brand colors, consider using Lossless WebP and checking the result at full size.

One important limitation: this converter is intended for still images. Animated PNG files should not be expected to retain their animation after conversion.

Can Converting PNG to WebP Make a File Larger?

Yes, although WebP often provides better compression than PNG.

The final file size depends on several factors, including the original PNG compression, image dimensions, visual complexity, and selected WebP settings.

For example, a detailed screenshot or illustration may benefit substantially from WebP compression. A tiny PNG containing only a few colors might already be so efficiently compressed that converting it provides little benefit.

Lossless WebP can also produce larger files than lossy WebP.

This is why our converter displays the original and converted file sizes, along with the percentage difference.

Rather than assuming that WebP is always the better option, compare the results and keep the version that provides the right balance of quality and size.

Are My PNG Images Uploaded to a Server?

No. Our PNG to WebP converter processes your selected images directly in your browser.

Your PNG files are not uploaded to InterCoolStudio’s server for conversion.

Depending on your browser, the tool may download an additional WebP encoding library. That library performs image processing locally on your device.

When you refresh or close the page, the current conversion batch is cleared from browser memory.

This approach also avoids transferring large image files to a remote conversion server.

For websites requiring automated image transformations, responsive image delivery, and large-scale processing, services such as Cloudinary provide additional options beyond individual file conversion.

When Should You Convert PNG to WebP?

Converting PNG images to WebP is especially useful when image file sizes affect how quickly your website loads.

Common examples include product images, blog illustrations, screenshots, and visual assets used across landing pages.

WebP can help reduce the amount of image data visitors need to download. However, actual loading performance also depends on image dimensions, responsive image delivery, caching, and the rest of the page.

For graphics that require completely lossless reproduction, PNG or lossless WebP may be more appropriate than lossy conversion.

A sensible workflow is to keep your original PNG files and use optimized WebP copies for website delivery when they provide a meaningful benefit.