Image
WebP Image is a image format commonly identified by .webp. Use the listed signatures, MIME types, and structure notes to validate files beyond the extension.
52 49 46 46 RIFFSIGNATURE = bytes.fromhex("52494646")
OFFSET = 0
def is_webp(path: str) -> bool:
with open(path, "rb") as f:
f.seek(OFFSET)
head = f.read(len(SIGNATURE))
return head == SIGNATUREconst SIGNATURE = [0x52, 0x49, 0x46, 0x46];
const OFFSET = 0;
// bytes: a Uint8Array / Buffer holding the start of the file
export function isWebp(bytes) {
return SIGNATURE.every((byte, i) => bytes[OFFSET + i] === byte);
}package fileid
import "bytes"
var iswebpSignature = []byte{0x52, 0x49, 0x46, 0x46}
const iswebpOffset = 0
func IsWebp(b []byte) bool {
end := iswebpOffset + len(iswebpSignature)
if len(b) < end {
return false
}
return bytes.Equal(b[iswebpOffset:end], iswebpSignature)
}const SIGNATURE: &[u8] = &[0x52, 0x49, 0x46, 0x46];
const OFFSET: usize = 0;
fn is_webp(bytes: &[u8]) -> bool {
bytes.get(OFFSET..OFFSET + SIGNATURE.len()) == Some(SIGNATURE)
}<?php
$signature = "\x52\x49\x46\x46";
$offset = 0;
function is_webp(string $bytes): bool {
global $signature, $offset;
return substr($bytes, $offset, strlen($signature)) === $signature;
}WebP Image is commonly used for image previews, thumbnails, metadata checks, and upload validation. Test multiple sizes because resolution, alpha support, compression, and file size often affect implementation behavior.
Media files can still stress decoders through corrupt metadata, extreme dimensions, long durations, or unusual chunks. Read size, dimensions, and duration before processing.
11 samples help test tiny images, high-resolution images, alpha channels, and hard-to-compress assets.
Navy Blue Sky WebP is a WebP Image sample based on Wikimedia Commons, 3264 x 1627. It can be used to test downloads, parsers, previews, and file type detection.
navy-blue-sky.webpb77e3e48632e90810e730ea69dfb3bf0e41b8b841df4d81d4a19e94f033c439d
Sun Beauty WebP is a WebP Image sample based on Wikimedia Commons, 4160 x 3120. It can be used to test downloads, parsers, previews, and file type detection.
01-sun-beauty.webp15c1a413b92c7b0d8df94d05651f9d05e08426b0cef0b57a7b50f9a20b3b715e
Waterfalls Nature WebP is a WebP Image sample based on Wikimedia Commons, 1078 x 809. It can be used to test downloads, parsers, previews, and file type detection.
02-waterfalls-nature.webp8f98d1e518205950da7777c006d933d67958118b4db901e3d764e5f280fb16d3
Francis Landscape WebP is a WebP Image sample based on Wikimedia Commons, 1033 x 840. It can be used to test downloads, parsers, previews, and file type detection.
03-francis-landscape.webp06d95912f8504355efdfe3091b6807442f46f8aed5cad1ea3a185d18e338024e
Arcadian Landscape WebP is a WebP Image sample based on Wikimedia Commons, 1430 x 1084. It can be used to test downloads, parsers, previews, and file type detection.
04-arcadian-landscape.webp43ee94c2b6c0b8573d5f060ad9d7ac095fc45fc8e98955d1972973f98f449de7
Two Pointers Landscape WebP is a WebP Image sample based on Wikimedia Commons, 2880 x 2157. It can be used to test downloads, parsers, previews, and file type detection.
05-two-pointers-landscape.webp52b1e2681fdad86f2a10e84dfd98bdda2ee5c5ca6efa7ea0a7be133cb10bd23e
Mountainous Village WebP is a WebP Image sample based on Wikimedia Commons, 2880 x 2264. It can be used to test downloads, parsers, previews, and file type detection.
06-mountainous-village.webpd309f333a4f2b285730cc4d238a81c52a78535c4fb5fe0438d737d2dd0673b09
Carinthie Paysage WebP is a WebP Image sample based on Wikimedia Commons, 651 x 500. It can be used to test downloads, parsers, previews, and file type detection.
07-carinthie-paysage.webp581e9312d54e6936e7a53d516d1dd7ce33e6c82c965a14170eccaa62bd8e31c5
Two Terriers Landscape WebP is a WebP Image sample based on Wikimedia Commons, 2880 x 2015. It can be used to test downloads, parsers, previews, and file type detection.
08-two-terriers-landscape.webpe5a164b46320bbfc88d03bdfd8f95bfa905e8fd9d386bd2d1a58b03656f207b9
Navy Blue Sky WebP is a WebP Image sample based on Wikimedia Commons, 3264 x 1627. It can be used to test downloads, parsers, previews, and file type detection.
09-navy-blue-sky.webpb77e3e48632e90810e730ea69dfb3bf0e41b8b841df4d81d4a19e94f033c439d
NASA Blue Marble WebP is a WebP Image sample based on NASA Image and Video Library, 640 x 640. It can be used to test downloads, parsers, previews, and file type detection.
nasa-blue-marble-2012-east.webp578940a934285ef5cfa736481932abce6ac1a44c334dbb9518be5f036e904042WebP Image files begin with the byte signature 52 49 46 46 ("RIFF"). Detect the format by reading these leading bytes rather than trusting the file extension alone.
The MIME type for WebP Image is image/webp.
WebP Image files use the .webp extension. The extension is a convention only and does not guarantee the file contents, so combine it with signature and structure checks.
