PNG to WEBP
WEBP offers everything PNG does — including full transparency — at dramatically smaller file sizes. Converting PNG to WEBP is the single best optimization for web images that need transparent backgrounds. FluidConvert converts PNG to WEBP free in your browser.
Drop your file here, or browse
Accepts: image/png, .png · Max 1GB · always free
We try this conversion in your browser first. If it cannot run locally, the file is uploaded for server conversion.
Choose your .PNG file and we'll convert it to .WEBP format — fast, free, and secure.
Fast & Free
Convert files up to 1GB completely free. No account, no limits.
Secure
Uploads use TLS encryption. Supported image conversions can run in your browser.
Check Your Result
Quality, transparency, and supported features depend on the output format. Keep your original file.
How to Convert PNG to WEBP
Upload Your File
Click the upload area above or drag and drop your .PNG file. We support files up to 1GB, completely free.
Check the Output Format
The target format is .WEBP. Click Convert Now to start.
Download Your File
When conversion finishes, download your file and open it to check the result.
About PNG to WEBP
What is PNG?
PNG (Portable Network Graphics) uses lossless compression and supports full alpha channel transparency, making it the go-to format for logos, icons, UI elements, and graphics that need to appear on any background color. The trade-off is file size — PNG's lossless algorithm produces files that can be significantly larger than lossy formats. On high-traffic websites, large PNG files contribute meaningfully to slow load times.
Why convert to WEBP?
Lossless WEBP achieves 26% better compression than PNG on average, while also supporting the full alpha channel transparency that makes PNG indispensable. This means your transparent logos and UI graphics can be 20-30% smaller as lossless WEBP without any quality loss whatsoever. Lossy WEBP with transparency achieves even greater size reductions at the cost of minor compression artifacts. All modern browsers support WEBP transparency.
What to expect from the conversion
PNG transparency is fully preserved in the WEBP output. For lossless WEBP conversion, file sizes drop 20-30% with zero quality change. Lossy WEBP achieves 60-80% size reductions compared to PNG but introduces subtle compression artifacts. The WEBP format retains full 24-bit color depth. Text and sharp-edged graphics convert cleanly in lossless mode.
How FluidConvert handles it
We convert PNG to WEBP using lossless mode by default to preserve pixel-perfect quality while still reducing file size. Alpha transparency is carried through the conversion without any clipping or modification.
Common reasons to convert PNG to WEBP
- Converting PNG logo files to transparent WEBP for a website header that loads 25% faster
- Optimizing a library of PNG icons for a web app to improve initial load time
- Converting PNG UI element sprites to WEBP for reduced asset bundle size in a web application
- Replacing large PNG screenshots used in documentation sites with smaller WEBP equivalents
Frequently Asked Questions
Does WEBP support transparency like PNG?
Yes. WEBP supports full 8-bit alpha channel transparency, identical to PNG. Logos, icons, and UI elements with transparent backgrounds convert to WEBP and remain fully transparent. This is what makes WEBP a viable PNG replacement for web use.
Should I use lossless or lossy WEBP when converting from PNG?
For logos, icons, and graphics with text or sharp edges, lossless WEBP preserves crispness while still reducing file size. For photographic images saved as PNG (like screenshots of photos), lossy WEBP achieves much greater compression. When in doubt, lossless mode is the safer choice.
Can I use WEBP images in CSS background-image?
Yes. WEBP images work in CSS background-image properties in all modern browsers. You can also use them in <img> tags. For legacy browser support, use the <picture> element with a PNG fallback alongside your WEBP source.