PNG to WebP

WebP keeps PNG's transparency but compresses far more efficiently, so converting is usually a straightforward size win with no visible quality loss.

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What changes

PNG is always lossless — every pixel is stored exactly. WebP supports both lossless and lossy modes; FileBench's converter uses WebP's lossy mode by default, which is what makes the file meaningfully smaller. If you need pixel-perfect output (e.g. for further editing), lossless WebP is still typically 20-30% smaller than PNG for the same image.

Transparency

WebP supports a full alpha channel exactly like PNG — transparent and semi-transparent pixels carry over correctly. This is one of the main reasons to prefer WebP over JPG for images that need transparency.

Metadata

Any embedded metadata (color profile, EXIF if present) is preserved during conversion. Use Remove Metadata afterward if you're publishing the image publicly and want to strip it.

Compatibility

WebP is supported by every modern browser (Chrome, Firefox, Safari, Edge) and by most current image tools. Older software or older versions of Safari (pre-14) may not display WebP — check your target audience if compatibility is a concern.

Will converting PNG to WebP reduce quality?

By default FileBench uses WebP's lossy mode, which does discard some detail in exchange for a much smaller file — usually not visible at normal viewing sizes. If you need identical pixels to the original PNG, lossless WebP is available and still smaller than PNG.

Does WebP keep transparency like PNG?

Yes — WebP has a full alpha channel, so transparent areas convert correctly with no workaround needed.

FAQ

Is processing done locally or on FileBench's servers?

This conversion runs on FileBench's servers using the same image.convert operation every PNG/WebP/JPG conversion tool on this site uses.