Batch PNG to WebP Converter
Convert PNG to WebP online for free. 100% secure, fast, and private local file conversion directly in your browser. No software installation required.
Why convert PNG to WebP?
WebP exists to make websites faster. A WebP image is typically about 26% smaller than the same PNG, and for flat graphics such as logos, icons, and UI elements the lossless WebP mode shrinks files dramatically while keeping every pixel. Site owners and front-end developers convert PNG assets to WebP to cut page weight, improve Core Web Vitals, and lower bandwidth bills. The smaller the asset set, the faster the page feels on slow mobile connections.
WasmConvert gives you both WebP modes for PNG sources: lossless for graphics where fidelity is non-negotiable, and lossy with a quality slider for photographic content that can afford mild compression. Transparency survives in either mode because WebP supports alpha. Conversion happens entirely in your browser, so design assets never touch third-party servers, and batch mode optimizes a whole icon set or sprite folder at once with no file-size ceilings.
Common use cases
- Shrinking PNG logos and UI assets for production websites and apps.
- Converting PNG icons and illustrations into a modern format for faster loading on mobile networks.
- Preparing PNG source art for platforms and CDNs that serve WebP automatically.
How to convert PNG to WebP (Step-by-step)
Select or drop your file
Click "Choose Files" or drag and drop your PNG file directly onto this page.
Set target format
Make sure the output format is set to WebP.
Local conversion
Click convert. Your file is processed entirely in your browser memory - no data is uploaded to our servers.
Save instantly
Once finished, your WebP file is ready to download.
PNG is a lossless raster image format that supports transparent backgrounds. It is the format of choice for icons, logos, and web graphics where detail and clarity are more important than file size.
WebP is a modern image format developed by Google that provides superior lossless and lossy compression for images on the web, significantly improving website loading speeds.
Pro tips for PNG to WebP conversion
- Use lossless WebP for logos, screenshots of text, and flat graphics; switch to lossy only for photographic PNGs.
- WebP lossless usually beats PNG's compression by roughly a quarter, but photos still compress far better in lossy mode — test both on one image.
- Older Safari (before 14) and legacy browsers lack WebP support, so serve WebP with a PNG fallback in your picture markup.