WebP Viewer
Open .webp files in your browser — with transparency detection and animation flag. Save as JPG or PNG. Runs locally.
Drop a WebP image to view it
Static or animated · transparency-aware · never uploaded
How to open a WebP file online
Drop your .webp file onto the page. ToolChop renders it instantly using your browser's native WebP decoder, shows the dimensions and file size, and parses the WebP container header to tell you whether the file has transparency (VP8X or VP8L alpha) or is an animation. Toggle the checkerboard background to inspect transparency clearly.
Why a local WebP viewer matters
WebP files are most often downloaded from web apps, screenshot from a browser, or shared by a colleague — i.e. they originate inside workflows the user wants to preview before sharing further. Uploading a WebP to a third-party viewer just to render it is a needless data path. ToolChop runs everything in your browser.
What ToolChop detects
- Format type — VP8 (lossy), VP8L (lossless), or VP8X (extended)
- Transparency — alpha-channel flag from the container header
- Animation — animation flag from VP8X
- True dimensions — directly from the decoded image
- File size — exact byte count
What you can do
- View static and animated WebPs
- Toggle Fit-to-width vs Actual size for inspection
- Checkerboard background reveals alpha edges
- Save a JPG copy (transparency flattened to white)
- Save a PNG copy (lossless, preserves alpha)
Frequently asked questions
How do I open a WebP file online for free?
Drop your .webp file onto ToolChop. The image renders in your browser with its true dimensions, file size, and whether it has transparency or is animated. You can also save as JPG or PNG with one click. No account, no upload, no daily limit.
Does ToolChop upload my image?
No. The file is loaded into a hidden `<img>` element backed by an object URL — that means the WebP bytes stay in your browser and never travel to a server. DevTools → Network confirms no request fires when you drop a file.
Why does the privacy story matter for a WebP viewer?
WebP files are usually downloaded from sites the user wants to preview before sharing, or screenshots from web apps. Uploading them to a third-party viewer just to render an image you could see locally is a needless data path. ToolChop runs everything in your browser.
Why won't Windows Photos open my .webp file?
Older versions of Windows Photos lack a native WebP decoder. Windows 10 added partial support, Windows 11 has fuller support, but many users still get 'cannot open this file' errors — especially with WebP animations. Modern browsers (Chrome, Edge, Firefox, Safari 14+) all decode WebP natively, which is what ToolChop uses.
Can ToolChop view animated WebPs?
Yes. The browser decodes animated WebP frames in the rendered `<img>` element. ToolChop also reads the WebP container header and shows an 'animated' badge when the file's VP8X chunk has the animation flag set.
How does ToolChop detect transparency?
ToolChop parses the first chunk of the RIFF/WebP container: VP8X stores an alpha flag in its features byte, VP8L (lossless) stores it in the image header, and VP8 (lossy) never carries alpha. The page shows the result as a green 'transparent' badge under the file name.
What is the difference between lossy and lossless WebP?
Lossy WebP (VP8) is a successor to JPEG with much better compression. Lossless WebP (VP8L) is comparable to PNG with smaller file sizes. Animated WebPs (VP8X with the animation flag) wrap multiple frames in one container — like animated GIFs but with much better compression.
Can I save the WebP as JPG or PNG?
Yes. Save-as-JPG draws the image onto a canvas with a white background (since JPG doesn't support transparency) and exports at 92% quality. Save-as-PNG preserves transparency. Both happen in your browser; no upload.
Will ToolChop work with WebPs that have ICC color profiles?
Yes — the browser's native WebP decoder applies the ICC profile when rendering, so colors look correct. When you save as JPG or PNG, the converted bytes use the decoded sRGB pixel data without re-embedding the profile.
Is there a file size limit?
Only your browser's memory. ToolChop handles WebPs hundreds of MB in size. Note that ultra-large animated WebPs may be slow to render because each frame must decompress — that's a browser-side limitation, not a ToolChop one.
Does ToolChop work on phones?
Yes. Mobile Chrome, Safari, and Firefox decode WebP natively, so ToolChop's viewer works on iPhone and Android. The Save-as buttons trigger native download / share sheets.
Why use ToolChop instead of an online WebP viewer that uploads my file?
Two reasons. First, uploading a file just to look at it is a needless privacy step. Second, ToolChop adds metadata (transparency, animation flag, true container type) that most online viewers don't show — useful when you're deciding whether a WebP needs to be converted before sharing.