Format Converter

PNG to WebP. Up to 75% smaller.

Shrink PNG files by converting to WebP, with full transparency support preserved. All processing stays in your browser.

Processing securely on your device, no data sent to any server

Drop your images here

JPG · PNG · WebP · SVG

Privacy Note: We use your browser's hardware to process this file. Your image stays on your computer throughout the entire process, nothing is transmitted.

No upload·100% private·Instant

How it works

Three steps. Smaller WebP, transparency intact.

Drop your PNG

Drag and drop PNG files onto the converter, or click to browse. Logos, screenshots, transparent graphics: all supported.

Format: WebP

The format is set to WebP automatically. Transparency is fully preserved. Adjust quality to balance size and visual fidelity.

Save your WebP

Your converted WebP file is ready instantly. Save it directly to your device or get the whole batch as a ZIP.

Common use cases

Who converts PNG to WebP?

PNG is lossless and great for editing, but it is far larger than necessary for web delivery. WebP gives you the same transparency support at a fraction of the file size.

Website logos and icons

PNG logos with transparent backgrounds are a perfect WebP conversion target. Transparency is preserved and file size drops dramatically, speeding up every page load.

UI screenshots and product images

Screenshots taken as PNG are often large because of the lossless format. WebP compresses them well without the blocky artefacts that JPEG introduces.

Game and app assets

Mobile and web apps with sprite sheets or UI assets stored as PNG can reduce asset bundle size significantly by converting to WebP.

E-commerce product images

Product images with removed backgrounds (PNG with transparency) are widely used in e-commerce. WebP reduces page weight and speeds up product pages.

WordPress media library

WordPress 5.8+ supports WebP uploads. Replacing large PNG assets with WebP equivalents can shave megabytes off page weight across your entire site.

Core Web Vitals improvement

LCP (Largest Contentful Paint) is heavily influenced by image file size. Converting PNG hero images to WebP is one of the fastest performance wins available.

How it works under the hood.

Your PNG is decoded by the browser and drawn to an HTML Canvaselement. The canvas is then exported using the browser's built-in WebP encoder. The alpha channel (transparency) is preserved throughout this process because WebP natively supports alpha channels just like PNG.

All processing happens locally in your browser tab. Your file never leaves your device. There is no upload, no server-side processing, and no risk of your images being stored or accessed by anyone else.

Common questions

Questions answered.

Does WebP support transparency like PNG?

Yes. WebP supports full alpha-channel transparency, just like PNG. Converting a PNG with a transparent background to WebP preserves the transparency completely, with a significantly smaller file size.

How much smaller is WebP compared to PNG?

WebP (lossy) is typically 50-75% smaller than PNG for the same image. Even WebP lossless is around 26% smaller than PNG. This makes PNG-to-WebP one of the most impactful file size reductions available for web images.

Should I use lossy or lossless WebP for my PNG?

For photos or images where minor quality loss is acceptable, lossy WebP at quality 80 gives the best size reduction. For logos, icons, or images with sharp edges where quality must be pixel-perfect, use a higher quality setting (90+) to minimise compression artefacts.

What quality setting should I use for logos and icons?

For logos and icons with flat colours and sharp edges, use quality 85-95. Lower quality settings can introduce visible artefacts along hard edges that are very noticeable on simple graphics. For photographic PNG images, quality 80 is an excellent default.

Is my image uploaded to a server?

No. Everything runs locally in your browser using the Canvas API. Your file never leaves your device.

Can I convert multiple PNGs to WebP at once?

Yes. Drop as many files as you need, there are no batch limits.

Does WebP support animation like GIF?

Yes, WebP supports animation. However, this converter processes static PNG images to static WebP. Animated PNGs (APNG) are not converted to animated WebP files.

Will WebP work in all browsers?

WebP is supported by Chrome, Firefox, Safari 14+, Edge, and Opera, covering over 98% of global browser usage. If you need to support very old browsers, provide a PNG fallback using the HTML picture element.

Related tools

More tools you might need.

Convert to WebP

Convert JPEG or PNG to modern WebP, up to 35% smaller at the same quality.

JPG to WebP

Convert JPEG images to modern WebP, up to 35% smaller at the same quality.

JPG to PNG

Convert JPEG to lossless PNG with transparency support, no quality loss.

Compress PNG

Shrink PNG files by up to 80% using pngquant quantisation, no upload.