Does transparency survive when converting PNG to WebP?

Yes. WebP fully supports an alpha channel, so every transparent pixel in your PNG stays transparent in the resulting WebP. That makes this converter safe for logos, icons, product cutouts, and any graphic that needs to sit on a coloured background. Our preview shows a checkerboard behind the converted image so you can visually confirm that the transparency carried across.

How much smaller is WebP compared to PNG?

For typical photo-like PNGs, WebP is often 60 to 80 percent smaller. For flat graphics and screenshots, expect 40 to 70 percent. Transparent logos usually shrink by 50 to 70 percent while staying visually identical. The exact number depends on the image, and the results panel shows the actual saving per file so you can measure it on your own images.

Will image quality drop when I convert PNG to WebP?

At the default quality of 85, WebP looks visually identical to the source PNG for photos and photo-like content, and stays crisp for graphics. Because WebP has a lossy mode and a lossless mode, the encoder picks efficient settings for typical content. If you need pixel-perfect output for tiny UI icons, push the slider to 95 or 100. If you want the smallest possible file for a website thumbnail, pull it down to 70 to 75.

Is this PNG to WebP converter free?

Yes. No signup, no email wall, no watermarks, and no daily limit. Convert as many PNG files as your browser can hold in memory.

Are my images uploaded to a server?

No. Conversion runs entirely in your browser using the Canvas API and, where needed, a WebAssembly WebP encoder that also runs locally. Your PNG files and the resulting WebP images are never uploaded, stored, or seen by us. You can disconnect from the internet after the page loads and it still works.

Can I convert many PNG files at once?

Yes. Drop a whole folder of PNGs, convert them in one pass at your chosen quality, and download every WebP together as a single ZIP file called png-to-webp.zip.

Can all browsers open WebP images?

Every modern browser (Chrome, Edge, Firefox, Safari 14 and later, Opera, and every current mobile browser) displays WebP with transparency. Some older desktop software, print shops, and legacy phones still cannot open .webp directly. Keep a PNG copy of anything you plan to hand to older tools, and use WebP for web publishing where reach is not a concern.

Should I use WebP for my website?

Yes, for most sites. Serving WebP instead of PNG is one of the fastest wins for page speed and Core Web Vitals: smaller images download faster, Largest Contentful Paint improves, and Google rewards faster pages with better rankings. Transparency and lossless WebP mean you can replace PNG almost anywhere without redesign work. For maximum reach you can serve WebP with a PNG fallback using the HTML picture element.

Can I convert WebP back to PNG later?

Yes. If you ever need a PNG copy of the WebP, use the WebP to PNG tool in the FreePDFHub image toolbox. It also preserves transparency, and it is 100 percent browser-based.

Does it work on Windows, Mac, Android, and iPhone?

Yes. The converter is a web page, so it runs in any modern browser on Windows 10 and 11, macOS, Chromebook, Linux, Android, iPhone, and iPad. Safari on Mac and iPhone uses a built-in WASM fallback path automatically, so the output is always a real WebP file with the alpha channel intact.

Convert PNG to WebP online, free

Turn PNG images into modern WebP with transparency preserved, in your browser.

or drop .png images here

Your files never leave your device. Transparency is preserved.

Your files never leave your device.

Found a bug or need help? Email hello@freepdfhub.in

PNG to WebP, converted in your browser

WebP is Google's modern image format for the web. Compared to PNG, it typically produces files that are 50 to 80 percent smaller while keeping the alpha channel intact, which is the single fastest way to trim megabytes off a web page without losing transparency. This free PNG to WebP converter turns any .png file into a real .webp inside your browser tab, no upload, no signup, no watermark. Convert one image, or drop a whole folder and grab the batch as a ZIP.

The tool tries the fast native path first: HTML canvas toBlob with the image/webp type. On Safari and a few older Firefox builds that path silently produces a PNG, so the converter feature-detects the returned MIME type and, if it is wrong, falls back to a WebAssembly WebP encoder that also runs locally and preserves alpha. The result is always a genuine WebP file, on every browser, with transparency carried through pixel for pixel.

How to convert PNG to WebP

Open the PNG to WebP tool, no signup needed.
Drag and drop .png files, or click to select.
Pick a quality (default 85) and click Convert. Every PNG is re-encoded to WebP right in your browser, alpha channel intact.
Download each WebP, or download the whole batch as a ZIP.

Transparency is preserved

This is the most important guarantee of a PNG to WebP tool, and the one many free converters get wrong. WebP fully supports an alpha channel, so every transparent pixel in your PNG stays transparent in the resulting WebP. Logos with a see-through background, product cutouts, UI icons, PNG stickers, and text-with-shadow assets all convert cleanly, ready to drop onto any coloured background without a white halo around them.

Under the hood we skip the two mistakes that break alpha in naive converters: we never pass the canvas the alpha:false flag, and we never fill a background colour before drawing the image. When Safari or older Firefox forces us onto the WASM fallback path, we hand the encoder the raw ImageData buffer including the RGBA channel, so alpha survives that path too. The preview grid places every converted image on a subtle checkerboard so you can visually confirm the transparency carried across before you download.

Why WebP for your website

PNG is lossless and universal, but it is also large. A modern product photograph exported as PNG can easily hit two or three megabytes, while the same image as WebP at quality 85 will land under 400 kilobytes with no visible difference. That single change lets a hero section load before the visitor scrolls, keeps a mobile product grid snappy, and cuts your monthly bandwidth bill.

Faster pages help beyond speed scores. Google has publicly confirmed that page experience signals, including Core Web Vitals, influence search ranking. Swapping PNG assets for WebP is one of the highest-return SEO changes you can make in an afternoon, and it costs nothing.

Choosing the right WebP quality

The quality slider runs from about 30 to 100. The default of 85 is the industry sweet spot: files are dramatically smaller than the source PNG, and side by side with the original, the difference is invisible for photographic content and clean for graphics. Push the slider to 90 or 95 when you want the closest possible match to a PNG that had subtle gradients or fine text, such as small UI screenshots. Pull it down to 70 or 75 when the goal is the smallest possible thumbnail or gallery preview and mild softening is acceptable. The results panel shows the exact percent saved per file so you can tune your setting to real numbers instead of guesses.

Where WebP is supported (and where it isn't)

Every modern browser reads WebP with transparency today: Chrome and Edge since launch, Firefox since 65, and Safari since version 14 on both macOS and iOS. Every current Android and iPhone displays WebP natively. On the desktop, most modern editors (Photoshop with the built-in plugin, Affinity Photo, GIMP, Krita) also support it.

Honest catch: some older or offline software still cannot open .webp: older versions of Microsoft Word and PowerPoint, some print shops, older phones, and a handful of legacy CMS upload forms. If you need to hand an image to a tool that might be that old, keep a PNG copy alongside the WebP. For the web, WebP is safe to use as your primary format.

Bulk convert PNG to WebP

Batch conversion is built in. Select as many PNGs as you like, or drop a whole folder, and each file is converted in one pass at the quality you picked. There is no per-file cap and no daily limit because the work happens on your own machine. When it finishes, download each WebP individually or grab them all together as a single ZIP archive named png-to-webp.zip, ready to drop into your site's images folder.

Your images never leave your device

Most online PNG to WebP converters upload every image to a stranger's server, hold it for hours, and log the metadata. This tool does the opposite. Both decoding and WebP encoding run inside your browser tab using the standard Canvas API and, where the browser cannot encode WebP itself, a locally loaded WebAssembly encoder. Your files, filenames, and any embedded metadata stay on your device. Disconnect from the internet after the page loads and the conversion still works.

Works on Windows, Mac, Android, and iPhone

Because the converter is a web page, it runs anywhere a modern browser runs: Windows 10 and 11, macOS, Chromebook, Linux, Android, iPhone, and iPad. Chrome and Edge give the fastest encoding on desktop. Safari on Mac and iPhone uses the WASM fallback path automatically, so the output is a real WebP file with transparency intact and no manual step required.

Frequently asked questions

Does transparency survive when converting PNG to WebP?: Yes. WebP fully supports an alpha channel, so every transparent pixel in your PNG stays transparent in the resulting WebP. That makes this converter safe for logos, icons, product cutouts, and any graphic that needs to sit on a coloured background. Our preview shows a checkerboard behind the converted image so you can visually confirm that the transparency carried across.
How much smaller is WebP compared to PNG?: For typical photo-like PNGs, WebP is often 60 to 80 percent smaller. For flat graphics and screenshots, expect 40 to 70 percent. Transparent logos usually shrink by 50 to 70 percent while staying visually identical. The exact number depends on the image, and the results panel shows the actual saving per file so you can measure it on your own images.
Will image quality drop when I convert PNG to WebP?: At the default quality of 85, WebP looks visually identical to the source PNG for photos and photo-like content, and stays crisp for graphics. Because WebP has a lossy mode and a lossless mode, the encoder picks efficient settings for typical content. If you need pixel-perfect output for tiny UI icons, push the slider to 95 or 100. If you want the smallest possible file for a website thumbnail, pull it down to 70 to 75.
Is this PNG to WebP converter free?: Yes. No signup, no email wall, no watermarks, and no daily limit. Convert as many PNG files as your browser can hold in memory.
Are my images uploaded to a server?: No. Conversion runs entirely in your browser using the Canvas API and, where needed, a WebAssembly WebP encoder that also runs locally. Your PNG files and the resulting WebP images are never uploaded, stored, or seen by us. You can disconnect from the internet after the page loads and it still works.
Can I convert many PNG files at once?: Yes. Drop a whole folder of PNGs, convert them in one pass at your chosen quality, and download every WebP together as a single ZIP file called png-to-webp.zip.
Can all browsers open WebP images?: Every modern browser (Chrome, Edge, Firefox, Safari 14 and later, Opera, and every current mobile browser) displays WebP with transparency. Some older desktop software, print shops, and legacy phones still cannot open .webp directly. Keep a PNG copy of anything you plan to hand to older tools, and use WebP for web publishing where reach is not a concern.
Should I use WebP for my website?: Yes, for most sites. Serving WebP instead of PNG is one of the fastest wins for page speed and Core Web Vitals: smaller images download faster, Largest Contentful Paint improves, and Google rewards faster pages with better rankings. Transparency and lossless WebP mean you can replace PNG almost anywhere without redesign work. For maximum reach you can serve WebP with a PNG fallback using the HTML picture element.
Can I convert WebP back to PNG later?: Yes. If you ever need a PNG copy of the WebP, use the WebP to PNG tool in the FreePDFHub image toolbox. It also preserves transparency, and it is 100 percent browser-based.
Does it work on Windows, Mac, Android, and iPhone?: Yes. The converter is a web page, so it runs in any modern browser on Windows 10 and 11, macOS, Chromebook, Linux, Android, iPhone, and iPad. Safari on Mac and iPhone uses a built-in WASM fallback path automatically, so the output is always a real WebP file with the alpha channel intact.