PNG vs WebP: Which Should You Use? (Website Speed Guide)
PNG has been the go-to for graphics and transparency for years, but WebP — Google's modern format — offers the same benefits at a much smaller size. If you care about website speed, the PNG vs WebP question matters. This guide compares them clearly so you know which to use, and when to keep PNG.
⚡ Try the Image to WEBP Converter now — freeOpen →Image size is a top factor in page speed, which affects both user experience and search ranking. WebP can dramatically cut the weight of your graphics versus PNG while keeping transparency and quality — a real, measurable win for websites.
How WebP beats PNG on size
WebP uses more advanced compression than PNG and supports both lossless and lossy modes, plus transparency. For the same graphic at the same visual quality, a WebP file is typically much smaller than a PNG — often dramatically so — which means faster page loads and less bandwidth.
Crucially, WebP keeps the transparency that made PNG essential, so you don't lose that capability by switching. For website graphics, logos and icons, WebP usually gives you PNG's benefits at a fraction of the size.
When to keep PNG
PNG still wins on universal compatibility. Every piece of software, everywhere, opens a PNG; some old or niche tools and email clients don't handle WebP. So for a file someone will download and open in unpredictable software, or for maximum compatibility, PNG is the safer choice.
The practical approach: use WebP for images on your website (all modern browsers support it) and keep PNG for downloads and anywhere compatibility must be guaranteed.
PNG vs WebP head to head
Step-by-step
Common mistakes to avoid
Pro tips
Frequently asked questions
Is WebP better than PNG?
For websites, usually yes — WebP is much smaller at the same quality and keeps transparency. PNG wins only on universal compatibility.
Does WebP support transparency?
Yes — WebP supports transparency just like PNG, so you don't lose that by switching.
Do all browsers support WebP?
All modern browsers do. Only very old or niche software may not, which is why PNG is safer for downloads.
How much smaller is WebP?
It varies, but WebP is often significantly smaller than PNG for the same graphic, improving load times.
When should I keep PNG?
For files that must open anywhere — downloads and maximum compatibility — or with software that doesn't support WebP.
For website graphics, WebP beats PNG on size while keeping transparency and quality — a clear speed win supported by every modern browser. Keep PNG only where universal compatibility matters, like downloads. Convert your site's images to WebP and feel the pages load faster.