Can I convert PNG to WebP on iPhone, Android, Mac or Windows?

Yes. ConvertPixels works in Safari, Chrome, Edge and Firefox on any device, so you can convert PNG to WebP on your phone or computer without installing an app.

Is there a free PNG to WebP converter with no sign-up?

Yes, this one. Converting PNG to WebP on ConvertPixels is free, with no sign-up, no watermark and no daily cap. Convert up to 30 files per batch, each up to 50 MB.

Can I convert PNG to WebP without losing quality?

WebP is a lossy format, but our default quality setting (85) keeps the result visually identical to the original. Turn quality up in the options for maximum detail, or down for a smaller file.

Will the transparent background survive converting PNG to WebP?

Yes. Transparency is supported in both formats and is preserved exactly.

Can I batch convert PNG to WebP?

Yes. Add up to 30 PNG files and convert them in one batch. You can even choose a different output format for individual files, then download them separately or together as a ZIP.

Is it safe to upload PNG files to ConvertPixels?

Yes. Uploads use an encrypted connection and are processed automatically - nobody views them. Your originals are deleted straight after conversion and the results within an hour, or instantly if you click "Delete from server now".

Convert

PNG to WebP Converter

Convert PNG images to WebP online in seconds - free, with no sign-up and no watermark. Batch convert up to 30 files and download them together as a ZIP.

Free
No sign-up
No watermark
Private by design

Choose filesor drag and drop files hereUp to 30 files · 50 MB each

Image Converter

How to use it

1
Drop your PNG files onto the converter
2
Press Convert to turn them into WebP
3
Download your WebP images one by one or as a ZIP

PNG to WebP

Why convert PNG to WebP?

The main difference: PNG is a lossless format, while WebP is a lossy or lossless format.

Smaller files, faster uploads

WebP supports lossy compression, so your file typically ends up a fraction of the PNG size - quicker to attach to an email, upload to a form or load on a web page.

Transparent areas stay transparent

PNG and WebP both handle transparency, so anything see-through in the original is still see-through after conversion.

Lighter images for your website

At the same visual quality, WebP files are noticeably smaller than JPG or PNG. Lighter images mean faster pages, better Core Web Vitals and a small boost for SEO.

PNG vs WebP: what's the difference?

Property	PNG	WebP
Compression type	Lossless (exact pixels, larger files)	Lossy or lossless
Transparent background	Yes	Yes
Animation	No	Yes
Where it opens	All browsers and devices	All modern browsers; some older apps and upload forms don't accept it
Used for	Logos, screenshots, graphics, images with text or transparency	Fast-loading website images

What is a PNG file?

PNG (Portable Network Graphics) is a lossless image format created in 1996 as a patent-free replacement for GIF. It stores every pixel exactly, so text, logos and sharp edges stay perfectly crisp however often you save the file.

PNG supports full transparency, which makes it the standard format for logos, icons, screenshots and graphics placed on top of other designs. For photos, though, PNG files are several times larger than JPG.

How to open a PNG file

PNG opens everywhere: Windows Photos, Mac Preview, iPhone and Android galleries and every web browser. Editors like Photoshop, GIMP, Figma and Canva keep the transparency intact.

Extension: .png
Compression: Lossless
Transparency: Yes
Best for: Logos, screenshots, graphics, text

What is a WebP file?

WebP is an image format Google introduced in 2010 to make websites load faster. It can compress photos lossily like JPG, or graphics losslessly like PNG - usually with 25-35% smaller files - and it supports transparency and animation too.

That's why so many images you save from websites, including Google Images, arrive as .webp files. Browsers love them; older software and many upload forms still don't.

How to open a WebP file

Chrome, Edge, Firefox and Safari display WebP directly - drag the file into a browser window. Windows 10/11 Photos and Paint and Mac Preview (Big Sur and later) open it as well. If an app or website rejects it, convert it to JPG or PNG.

Extension: .webp
Compression: Lossy or lossless
Transparency: Yes
Best for: Fast-loading website images