Convert PNG to WebP Online Free
PNG is a lossless raster format with full transparency support, ideal for graphics and screenshots. WebP is a modern Google format offering both lossy and lossless compression with transparency. FileConverter turns your PNG into WebP online in seconds - free, privacy-first, and with no software to install or account to create.
Convert PNG to WebP
WebP is already selected. Add your PNG file to start.
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Videos
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Add a PNG file above to start the conversion.
PNG to WebP typically shrinks web assets dramatically while keeping transparency. Test in your target browsers before rolling out sitewide.
What changes when you convert PNG to WebP
WebP uses lossy compression, which shrinks the file by discarding fine detail your eye is unlikely to notice. That is ideal for sharing and web use; keep the original PNG if you need a pristine master for editing or print.
About the PNG format
PNG uses lossless compression, so it never discards pixel data, and it supports an 8-bit alpha channel for smooth transparency. That makes it the standard choice for logos, icons, UI screenshots, and any graphic with crisp edges or text. In everyday use, PNG is chosen for logos, icons, and UI elements, screenshots with text and sharp edges and graphics that need transparent backgrounds. It opens in all browsers, Windows Photos, macOS Preview, and every graphics editor.
About the WebP format
WebP typically produces files 25-35% smaller than JPG or PNG at comparable quality, and it supports transparency and animation. It is now supported by every major browser, making it a strong default for web performance. In everyday use, WebP is chosen for web images where page speed matters, replacing large PNGs with transparency and Core Web Vitals and performance optimisation. It opens in all modern browsers and recent versions of Windows Photos and macOS Preview.
PNG vs WebP
PNG is best known for lossless quality with no compression artefacts, while WebP stands out for significantly smaller than JPG and PNG. Choosing between them comes down to where the file needs to go next.
Common use cases
People convert PNG to WebP for jobs such as web images where page speed matters, replacing large PNGs with transparency and Core Web Vitals and performance optimisation. It is especially common when a PNG file arrives from one system but needs to work in another that standardises on WebP.
When to convert PNG to WebP
Reach for PNG to WebP when your destination expects WebP — for example web images where page speed matters, replacing large PNGs with transparency and Core Web Vitals and performance optimisation. It is the right move when you receive a PNG file but the app, website, or person you are working with cannot use it. Bear in mind that older desktop software and some print tools do not read it, so keep your original PNG if you might need it again.
How to convert PNG to WebP
- Upload your PNG file to the converter at the top of this page - WebP is already selected as the output.
- Check the size limit shown on this page, then drag and drop or browse for your file.
- Confirm WebP is still the target format, or pick a different one from the grid.
- Start the conversion and download your WebP file the moment it is ready.
Quality tips
Always start from the largest, highest-quality PNG you have. If WebP still needs to fit a size or pixel budget, run the result through our Compress or Resize tools rather than re-saving repeatedly, which degrades quality.
Platform compatibility
The PNG to WebP converter runs on Windows, macOS, Linux, Android, and iOS - anywhere with a modern browser, with no plugins or permissions required. Once exported, WebP opens in all modern browsers and recent versions of Windows Photos and macOS Preview.
File size limits
Images up to 200MB
Troubleshooting
- WebP is lossy, so each re-save loses a little more detail. Convert from your original PNG rather than from an earlier WebP export.
- If the file exceeds the limit shown below, compress images, trim video, or split archives before retrying.
- If conversion fails, confirm the extension matches the real format — renaming a file alone does not change its contents.
- SVG and HEIC inputs sometimes need a moment longer on the first conversion.
- Transparency does not survive every target format — use PNG or WebP if an alpha channel matters.
Explore more: image Conversion Hub · File format guides · All tools