Image | Convert

Convert PNG to WebP online

Convert PNGs to WebP in your browser and cut typical image weight by 25 to 35 percent.

PNG to WebP converts PNG images to Google's WebP format, typically 25-35% smaller at the same visual quality, ideal for the web. The tool runs locally in your browser. PNG to WebP is a free browser tool that lets you convert PNG to WebP for better compression.

Free to use
No signup
No uploads
Works offline

Why use PNG to WebP

25-35% smaller than PNG
Alpha transparency preserved
Batch convert whole folders
Files never leave your device

Encoding runs locally in your browser. Nothing is uploaded.

How to use PNG to WebP

Add a PNG Drop or select your PNG file.
Convert Run the WebP encode in your browser.
Download the WebP Save your WebP image.

Benefits

Faster pages, higher rankings

Smaller images improve LCP and Core Web Vitals, which improves search visibility.

Modern format, universal support

Every major browser now supports WebP, so you can drop the PNG fallback for most projects.

Private conversion

Encoding runs client-side, so unreleased assets stay on your device.

Who it is for

Developers

Migrating a static site from PNG to WebP Outcome: Cut image bytes on every page in one pass.

Marketers

Publishing lighter product shots for a landing page Outcome: Faster load times without a designer round-trip.

Bloggers

Optimizing a photo-heavy article Outcome: Ship the post without slowing mobile readers.

How it works

PNG to WebP reads the PNG structure in your browser, decodes its content into an in-memory representation, then re-encodes that data as WebP. Both the decode and encode steps of PNG to WebP run on your device, so nothing is transmitted and accuracy never depends on network conditions.

Frequently asked questions

Is WebP supported everywhere?

Yes. Every major modern browser supports WebP.

Does transparency survive?

Yes. WebP supports alpha transparency just like PNG.

How much smaller is WebP?

WebP is typically 25-35% smaller than PNG at visually identical quality, more with lossy mode enabled.

Do all browsers support WebP?

Every current browser (Chrome, Edge, Firefox, Safari 14+) supports WebP natively.

Lossless or lossy?

Choose lossless to match PNG fidelity exactly, or lossy for maximum compression on photographic content.

Is transparency preserved?

Yes. WebP supports full 8-bit alpha, so PNG transparency carries across in both lossless and lossy modes.

Related tools

Image Converter | Convert between JPG, PNG, WEBP, GIF and more
WebP to PNG | Convert WebP images to lossless PNG
PNG to PDF | Convert PNG images into a PDF document

Last updated: 2026-07-09