Skip to main content

Convert PNG to WebP

Convert PNG to WebP: upload a .png file and download it as .webp. No signup, no watermarks. The quality, transparency and file size effects are explained below.

Upload a .png file and download it as .webp. PNG is lossless format with transparency support, while WebP is modern format with excellent compression and quality balance — below you can see exactly what changes in the conversion.

PNG → WebP

Drop one .png file here

or click to choose · up to 50 MB

Files are uploaded to Sirv for processing. Do not upload confidential or sensitive images.

Should You Convert PNG to WebP?

Conversion changes how your image is stored, not what it shows. Switching from PNG to WebP trades one set of strengths for another, so it helps to know which side of that trade you are on.

Good reasons to switch

  • ✓ Smaller file sizes than JPEG/PNG
  • ✓ Supports transparency
  • ✓ Supports animation
  • ✓ You need the file in a program or platform that only accepts .webp

Better off staying with PNG

  • ✗ Lossless quality — conversion does not remove this trade-off
  • ✗ Transparency support — conversion does not remove this trade-off
  • ✗ Universal support — conversion does not remove this trade-off
  • ✗ Nothing about your current workflow requires .webp

What Changes When You Convert

Quality

WebP compresses lossily, so the output is slightly degraded compared to your lossless PNG original. For photos the difference is usually invisible at normal quality settings; for text and sharp edges it can show sooner.

Transparency

Transparency is preserved when converting between these two formats.

Animation

The output is a still image. To animate it you would need dedicated frames or an animated source.

File size

File size depends on content: WebP files are typically 25-35% smaller than JPEG at the same quality, while PNG files are compact for flat graphics and screenshots, large for photographs.

PNG vs WebP: Format Comparison

Feature PNG WebP
Compression Lossless only Lossy and lossless
Transparency Yes Yes
Animation No Yes
Typical size compact for flat graphics and screenshots, large for photographs typically 25-35% smaller than JPEG at the same quality
Best for Logos, Icons, Screenshots, Graphics with text Web images, E-commerce products, Blog images
Browser support 100% 96%
Extension / MIME .png · image/png .webp · image/webp

How the Converter Works

  1. Upload — drop your .png file into the tool above. It is uploaded to Sirv for processing; do not use confidential images.
  2. Convert — the file is re-encoded as .webp with sensible default quality settings.
  3. Download — the response is checked for a successful status, the expected MIME type, and a valid image signature before download.

Frequently Asked Questions

Does converting PNG to WebP lose quality?
A little, yes — WebP is a lossy format, so the encoder discards data it considers invisible. At typical quality settings the difference is imperceptible for photos. If you plan to edit the image further, keep a copy of the PNG original.
Will the WebP file be smaller than my PNG file?
File size depends on content: WebP files are typically 25-35% smaller than JPEG at the same quality, while PNG files are compact for flat graphics and screenshots, large for photographs.
Is this PNG to WebP converter free?
Yes — free, with no signup and no watermarks. Your image is uploaded to Sirv so the converted file can be generated.
Can I convert back later without losing more quality?
You can always convert back, but each lossy re-encode compounds slightly. The safe habit: keep your original .png file as the master, and treat every converted .webp as a derived copy.

Go Deeper

PNG guide →

Compression settings, tools, and pitfalls for .png files.
WebP guide →

Get the most out of .webp: optimization, quality, and delivery.
PNG converter →

Convert any supported format to PNG, or PNG to anything else.
WebP converter →

Convert any supported format to WebP, or WebP to anything else.