How to Convert PNG to WebP (Smaller Files, Same Quality)
WebP files are far smaller than PNG at the same quality — with transparency kept. Here's how to convert PNG to WebP free.
Converting PNG to WebP is one of the easiest speed wins for a website. WebP delivers the same visual quality and transparency as PNG at a fraction of the file size — often 25–35% smaller, sometimes far more. Smaller images mean faster pages and better Core Web Vitals. Here's how to convert PNG to WebP free.
Why WebP beats PNG for the web
PNG is lossless and universal, but heavy — great for editing, wasteful for shipping. WebP was built for the web: it supports both lossless and lossy modes *and* transparency, so you keep PNG's best feature (an alpha channel) while cutting the weight dramatically. For logos, icons and graphics on a website, WebP is usually the better delivery format.
How to convert PNG to WebP (free)
Step 1 — Open the converter at sjpt.io.
Step 2 — Upload your PNG.Step 3 — Choose WebP as the output.
Step 4 — Download the smaller WebP.
Transparency is preserved, and it's processed privately in your browser — no watermark, no sign-up.
When to keep PNG
Keep a PNG master for editing (WebP support in some older design apps is patchy) and for anywhere that must accept PNG. The smart workflow is: edit in PNG, then export WebP for the website. That way you get a clean lossless master to work from and a lightweight file for visitors to download.
Does WebP lose quality?
Not if you don't want it to — WebP has a lossless mode that matches PNG exactly while still saving space. Its lossy mode saves even more with a tiny, usually invisible quality trade-off, similar to a high-quality JPEG but smaller. For graphics with transparency, lossless WebP gives you PNG quality at a smaller size.
Frequently asked questions
How do I convert PNG to WebP for free?Upload your PNG to JPT AI's converter, choose WebP, and download. Free, no watermark, no sign-up.
Does WebP keep transparency?Yes — WebP supports an alpha channel, so transparent PNGs stay transparent.
Is WebP smaller than PNG?Usually much smaller at the same quality — a big speed win for websites.
Will every browser show WebP?All modern browsers support WebP. Keep a PNG fallback only if you must support very old software.
Key takeaways
Convert PNG to WebP to ship the same quality and transparency at a fraction of the size — keep a PNG master for editing, export WebP for the web. Do it free at sjpt.io. Convert Image Free →
