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PixelAndPDF

PNG to WebP Converter — Free Online

WebP is the fastest way to make heavy PNGs load quicker on a website without a visible drop in quality. Drop your PNGs in, watch the size saving for each file, and tune the quality slider until you are happy. Transparency is preserved.

How to use the png to webp converter

  1. Drop your PNG files into the box above.
  2. Adjust the quality slider and watch the new file size for each image.
  3. Download the WEBP files and use them on your site.

What this does for page speed

PNG is the wrong format for most images on a website, and it is one of the most common reasons a page feels slow. Because PNG is lossless it stores photographic detail no visitor will ever notice, and a hero image exported as PNG can easily be 2 MB where the same image as WebP is 150 KB. On a phone over mobile data that difference is the gap between a page that appears immediately and one that visibly loads.

It shows up directly in Core Web Vitals. Largest Contentful Paint is usually decided by the biggest image above the fold, so shrinking that one file is often the single highest-leverage performance change available — more effective than deferring scripts or trimming CSS, and far less risky.

Transparency, quality and browser support

WebP supports an alpha channel, so logos, icons and cut-out product shots keep their transparent backgrounds. That is what makes it a genuine replacement for PNG rather than a compromise — you are not trading transparency for size the way you would converting to JPG.

For quality, screenshots, diagrams and anything with text or hard edges want 90% or higher, because those are exactly the details lossy compression damages first. Photographs and background textures are comfortable at 80–85%. Support is no longer a concern: every current browser has handled WebP for years, and if you must serve something very old, keep the PNG as a fallback inside a <picture> element rather than avoiding WebP altogether.

Frequently asked questions

How do I convert PNG to WebP online free?
Drop PNG files in, adjust quality, and download WebP. This PNG to WebP converter shrinks page weight in your browser with no upload.
How much smaller is PNG to WebP?
Photos often drop 50–70% vs PNG; flat graphics save less. You see before/after sizes so you can confirm the PNG to WebP saving.
Do all browsers support WebP?
Chrome, Edge, Firefox and Safari 14+ all display WebP. That is why PNG to WebP is a common Core Web Vitals optimisation.
Does PNG to WebP keep transparency?
Yes. WebP supports alpha like PNG, so logos and icons convert cleanly.
Is PNG to WebP good for SEO?
Indirectly. Smaller images improve Largest Contentful Paint. The format itself is not a ranking factor, but faster pages help users and Core Web Vitals.
Lossless or lossy when converting PNG to WebP?
This tool outputs lossy WebP for typical site images. Keep quality high (near 100%) or stay on PNG for pixel-perfect diagrams and fine text.
Can I batch convert PNG images to WebP?
Yes — up to 20 PNGs per run. Convert PNG to WebP locally, then swap the files into your site or CDN.
Is converting PNG to WebP private?
Yes. Files never leave your device. Useful for product shots and unpublished designs.
Should I convert screenshots from PNG to WebP?
Often yes for the web. If the screenshot is mostly sharp text, keep quality high or compare PNG vs WebP visually before publishing.
PNG vs WebP for ecommerce images?
WebP usually loads faster at similar quality. Convert PNG to WebP for storefronts, and keep a PNG master if you still need lossless edits.

Related tools

Runs entirely in your browser — your files never leave this device. Last reviewed July 29, 2026.