Are my images uploaded to a server?

No. Everything runs in your browser, so the image never leaves your device and nothing is stored on a server.

PNG to WebP

Convert PNG to WebP and keep transparency.

Runs in your browser, nothing is uploadedFree, no signupNo watermark

Drop an image here

or click to choose one. It never leaves your device.

Before and after

See what changes

Six Thridy 3D food icons arranged on a warm gradient background — Same image, same apparent quality, a fraction of the bytes. WebP also keeps transparency, which is what makes it a real replacement for PNG rather than only for JPEG.

Same image, same apparent quality, a fraction of the bytes. WebP also keeps transparency, which is what makes it a real replacement for PNG rather than only for JPEG.

Drag the handle across the image. The right-hand side is this tool's output, not a mock-up of it.

Before: PNG, 582 KB
After: WebP, 40 KB, 93% smaller

Three steps

How to use the png to webp

01
Drop in PNG files
Add logos, screenshots or graphics, with or without transparency.
02
Choose lossless or lossy
Lossless keeps every pixel exact and still shrinks the file. Lossy goes much smaller and suits photographic content.
03
Download the WebP
Transparency is preserved either way.

Why this one

What makes it different

Transparency survives

Unlike converting to JPEG, the alpha channel comes through intact, which is what makes this the right conversion for logos.

Smaller even in lossless mode

WebP lossless typically beats PNG by 20 to 30 percent with zero pixel change, so there is a saving with no trade at all.

Both modes, chosen by you

A screenshot wants lossless and a photographic PNG wants lossy, and guessing wrong costs either quality or file size.

Where it runs: Your browser, not a server
Uploads: None, ever
Account: Not required
Watermark: Never added

The short version

About png to webp

PNG is the safe choice for anything with transparency, and safe has a cost: a page carrying a dozen PNG graphics is heavier than it needs to be. WebP does the same job, keeps the transparency, and is smaller even without discarding a single pixel, which makes lossless WebP one of the few genuinely free improvements in web performance.

Questions

PNG to WebP FAQ

Does WebP support transparency like PNG?

Yes, fully. WebP carries an alpha channel in both its lossless and lossy modes, which is why it can replace PNG rather than only JPEG.

Should I use lossless or lossy WebP?

Lossless for logos, icons, screenshots and anything with sharp edges or text. Lossy for photographs and complex imagery, where the saving is far larger and the loss is invisible.

How much smaller will the WebP be?

Lossless typically saves 20 to 30 percent against PNG. Lossy can save 80 percent or more on photographic content, which is the bigger prize when the image suits it.

Is it worth converting PNG icons to WebP?

On a page with many of them, yes, since the savings add up. For a single small icon the difference is negligible and PNG is one less thing to think about.

Free, and staying free

The tools are free because the icons are the business.

Thridy is a library of thousands of 3D icons in one consistent style, free for commercial use with no attribution and no account. The tools exist so you never have to upload an image to somebody else's server to resize it.

Browse the icons Request an icon

Keep going

Image Converter

Move between PNG, JPEG and WebP in a click.

JPG to PNG

Convert JPG photos into lossless PNG.

PNG to JPG

Convert PNG to JPG, flattening transparency to white.

JPG to WebP

Convert JPG to smaller, modern WebP.

WebP to JPG

Convert WebP into widely compatible JPG.

WebP to PNG

Convert WebP into lossless PNG with transparency.

All tools