Convert PNG to WebP (Keep Transparency)

If you use PNG for logos, overlays, or UI assets, transparency is usually the whole reason. The good news: WebP supports transparency, so you can often convert PNG to WebP and keep the transparent background while reducing file size.

Try it here: PNG to WebP.

Choose the right kind of WebP

WebP has two modes that matter in practice:

• Lossless WebP: best for UI, text, logos, and anything where you want perfectly crisp edges.
• Lossy WebP: best for photos and gradients where small artifacts are acceptable.

If your PNG is a logo or has sharp edges, start with lossless.

When you should keep PNG instead

WebP is great, but PNG is still a reasonable default when:

• The PNG is already tiny (small icons). Sometimes the savings are minimal.
• You’re sending the asset to someone who will edit it in unknown tools.
• You’re working in a pipeline that doesn’t support WebP reliably.

For web delivery where you control the pipeline, WebP is usually worth it.

WebP compatibility (and fallbacks)

WebP is widely supported in modern browsers, but if you’re sending files to people or uploading to unknown systems, PNG is still the “least surprising” format.

For websites you control, a common approach is to serve WebP with a PNG fallback. That way modern browsers get the smaller file, and everything else still works.

How to convert PNG to WebP (private)

1. Open: PNG to WebP
2. Drop your PNG file(s) into QuickImager.
3. Turn on lossless for graphics (recommended).
4. Convert and download.

How to sanity-check transparency

After conversion, preview the output on a few backgrounds:

• White background (to see dark edge halos)
• Dark background (to see light edge halos)
• A mid-tone background (to catch subtle artifacts)

If you see halos, try lossless WebP or keep PNG for that asset.

Common transparency problems (and fixes)

• Edge halos: This can happen when an asset was designed with a specific background in mind. Try lossless WebP or revisit the original PNG export.
• Soft text: For UI screenshots and text, lossless WebP is usually the safest option.
• Unexpected background: Make sure you’re actually starting with a PNG that has transparency. Some PNGs are “flat” (no alpha) even if they look transparent on a website.

Related conversions and reading

• Format decision help: PNG vs WebP
• Need to edit again? WebP to PNG
• Want to optimize JPGs too? JPG to WebP

FAQ

• Does WebP always preserve transparency? Yes, WebP supports transparency. The main difference is whether you pick lossless or lossy settings for the visual content.
• Will this keep my logo perfectly crisp? Use lossless WebP for logos and sharp edges.
• Is this private? Yes. QuickImager converts locally in your browser. No uploads.

Ready: Convert PNG to WebP.