Web delivery
Use it when page weight matters and a PNG is larger than it needs to be for the final published slot.
Free PNG to WebP Converter
Convert PNG files to WebP locally in your browser with optional quality control.
Files and text are processed locally in your browser. No upload. No signup.
Up to 10 PNG files, 10 MB per image. Files stay in your browser.
Drop PNG files or choose them below.
How to use
- 1 Select one or more PNG files from your device.
- 2 Adjust the WebP quality slider if you want smaller output.
- 3 Download each converted WebP file after processing finishes.
Features
- Batch conversion for up to 10 PNG files.
- File size comparison before download.
- Preserves transparency in browsers that support WebP.
- Processes files locally in your browser.
Common use cases
Making website screenshots lighter
Preparing product images for a blog post
Converting transparent graphics for faster delivery
Example input and output
PNG input
Shrink a transparent screenshot for the web
dashboard-shot.png — 1.8 MB
WebP output
Result you can copy or download
dashboard-shot.webp — 420 KB
WebP is often much smaller for delivery while still looking close to the original at normal page sizes.
When this tool is the right fit
Transparent graphics
It works well for UI screenshots, badges and product cutouts that should stay transparent after conversion.
Batch cleanup before publishing
You can convert several PNG files in one go instead of repeating the same export step manually.
Quick comparison
| If you need | Best choice | Alternative | Why |
|---|---|---|---|
| Smaller images for websites | PNG to WebP | Keep PNG | WebP usually reduces file size without forcing you to edit the original PNG source. |
| Best edit-friendly source file | Keep PNG | PNG to WebP | PNG is often a safer source format for future editing and re-exporting. |
| Just smaller dimensions | Image Resizer | PNG to WebP | Resize first when the file is oversized because of pixel dimensions, not only format choice. |
Best format choice
When to use it
You want smaller images for a modern website
WebP is often the better delivery format.
When to use it
You need a safer editing or archival source
Keep the original PNG as your source file.
Common mistakes
- Converting every PNG without checking whether the visual trade-off is worth it.
- Expecting a dramatic size drop on tiny or already optimized PNG assets.
- Replacing the original source file before confirming the WebP output looks right.
FAQ
Will transparency be preserved?
Yes. PNG transparency is preserved when converting to WebP in supported browsers.
Are my images uploaded?
No. Files are processed locally in your browser.
Can I convert multiple PNG files?
Yes. The converter supports batch processing with a file count limit for stability.
Does WebP support animation like GIF?
WebP supports both lossy and lossless compression but this converter handles static images.
Can I control the output quality?
Yes. The tool provides a quality slider to balance file size and visual quality.