Convert PNG to WebP Online (Free)
WebP is Google's modern image format: up to 30% smaller than PNG while keeping perfect transparency and quality. Replacing PNGs with WebP is the fastest win for any website. Our Convert Image tool handles it in a click, entirely in your browser.
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Open Convert PNG to WebP OnlineWhy WebP usually beats PNG
- - 25–30% smaller files, often more.
- - Full transparency support.
- - Supported by every modern browser.
You keep the crisply defined look of PNG in a file that loads faster on mobile and costs less bandwidth.
How to convert PNG to WebP
- Open Convert Image.
- Upload your PNG.
- Select WebP.
- Convert and download.
When to stay on PNG
Very old environments, some print workflows and tools that only accept PNG. For the web, WebP is nearly always the right answer.
PNG vs WebP: what actually changes after conversion
WebP keeps the same pixels and the same transparency as PNG while typically cutting the file size by 25-50% on photographic content, and by roughly 10-30% on flat graphics with few colors. Text-heavy screenshots are the exception: at identical visual quality PNG can sometimes stay smaller, so check both numbers before replacing the original.
Two habits make the switch safe. First, keep the PNG master file and only publish the WebP derivative, so you can always fall back if a legacy tool rejects the new format. Second, preview the converted image at 100% zoom and look at sharp text edges and color bands - those are the two areas where generation loss shows up first. Every browser in use since 2020 renders WebP natively, including every mobile browser on iOS and Android.
About this guide
- Written by
- The ImageTools Pro team
- Last reviewed
- October 2026
- How we test
- Steps run in a real browser on real PNG, JPEG and WebP files
We revise this page whenever browser APIs, format support or recommended settings change. Corrections are welcome — tell us from the contact page.
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Frequently Asked Questions
Does WebP quality look worse than PNG?
No. At high quality settings WebP is visually lossless for most images and much smaller than PNG.
Are transparent areas preserved?
Yes, WebP supports alpha exactly like PNG.
Can I convert back to PNG later?
Yes, the Convert tool goes both ways. Converting WebP to PNG is lossless.