PNG to WebP Converter

Shrink PNG graphics into WebP while keeping transparency fully intact — usually a substantial saving with no visible change.

Why convert PNG to WebP?

WebP is the natural upgrade from PNG for the web. It keeps the alpha channel your PNG depends on, but compresses far more effectively — lossless WebP is typically around 25% smaller than PNG, and lossy WebP dramatically smaller again.

That matters most for exactly the things PNG is used for: logos, icons, UI assets and product cut-outs, which often appear many times across a page.

Transparency: Fully preserved. WebP has a complete alpha channel, so soft shadows, feathered edges and partial transparency all survive the conversion.

Diagram showing a PNG image being converted to WebP with QuickConvertPDF

What you get converting PNG to WebP

Transparency is preserved

The alpha channel carries across intact, with clean edges and no white box.

Meaningfully smaller

Lossless WebP is typically around 25% smaller than PNG; lossy mode saves far more.

Ideal for logos and UI assets

Flat colour and sharp edges compress especially well in WebP.

Broad browser support

Every current mainstream browser handles WebP transparency correctly.

What to expect: File size varies with image content. This converter uses lossy WebP output and preserves transparency.

When to convert PNG to WebP

Optimising logos, icons and UI sprites on a website
Compressing product cut-outs that must sit on any background
Reducing the weight of an image-heavy design system
Replacing large PNG hero graphics without losing alpha

PNG vs WebP

	PNG	WebP
Compression	Lossless	Lossy
Transparency	Yes	Yes
Best for	a lossless format with full transparency support, ideal for graphics, logos and screenshots	a modern Google format that keeps transparency while cutting file size well below JPG and PNG

PNG to WebP — frequently asked questions

Yes. WebP supports a full alpha channel, including partial transparency, so soft edges and drop shadows carry over cleanly.

It can be. WebP offers both lossless and lossy modes. Lossless keeps pixels exact and is typically around 25% smaller than PNG; lossy saves far more with a small quality trade-off.

For flat graphics and logos, commonly 20–35% in lossless mode. Photographic PNGs can shrink far more if you accept lossy compression.

Very. Large areas of flat colour and sharp edges are exactly what WebP handles well, and transparency is retained.

Rarely for browsers these days. You may still want PNG for email clients, older desktop software or design handoff.

No. Only the encoding changes; width and height stay the same.

Related tools

WebP to PNG PNG to AVIF JPG to WebP Compress Image

Who benefits from converting PNG to WebP?

These are common examples; the right workflow depends on the file, required output, and your organization’s handling rules.

Web developers

Prepare modern image assets that can reduce page weight in supported browsers. A typical use is optimising logos, icons and UI sprites on a website.

Online stores

Deliver product imagery efficiently while retaining support for transparency. A typical use is compressing product cut-outs that must sit on any background.

Digital publishers

Create lighter article and landing-page images for mobile readers. A typical use is reducing the weight of an image-heavy design system.

Performance teams

Compare a WebP result with the source before choosing the best production asset. A typical use is replacing large PNG hero graphics without losing alpha.