100 MB WebP sample

A WebP file of exactly 104,857,600 bytes. It is a valid WebP image file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 100 MB sample, test or dummy WebP file.

sample-webp-100mb.webp

100 MB104,857,600 bytes

Download 100 MB WebP

Created in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.

Type: image/webp
SHA-256: a777130fd1eacca6eebb6e5bdebcba58d12879f5b7c7113b932d52fed7d78efd
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 6844 × 5107 lossless test card coded with literal pixels only. 508 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.

Dimensions	6,844 × 5,107 px
Encoding	Lossless (VP8L)
Container	Extended (VP8X) with XMP metadata
Transparency	No
Animated	No

First bytes of the file

The first 64 bytes of sample-webp-100mb.webp as a hex dump: offset, bytes, then the same bytes as text. The WebP signature is 52 49 46 46 ?? ?? ?? ?? 57 45 42 50.

00000000  52 49 46 46 f8 ff 3f 06  57 45 42 50 56 50 38 58 |RIFF..?.WEBPVP8X|
00000010  0a 00 00 00 04 00 00 00  bb 1a 00 f2 13 00 56 50 |..............VP|
00000020  38 4c d6 fd 3f 06 2f bb  9a fc 04 80 40 00 00 00 |8L..?./.....@...|
00000030  e2 ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff |................|

Preview

Creates the file in your browser and shows it here. Nothing large is downloaded from our server.

Where 100 MB matters

A 104,857,600-byte file: the request-body limit of Cloudflare's Free and Pro plans, and the size above which GitHub rejects a file outright.

All 100 MB sample files

Use this file for

Testing image resizing and memory use
Checking conversion to and from JPEG and PNG
Testing image CDNs and optimisation

Testing notes for WebP

Allow-lists written years ago often contain only JPEG, PNG and GIF, so WebP uploads fail on otherwise working forms.
Sniffers that read only the first four bytes see RIFF and may confuse WebP with WAV or AVI.

WebP format reference

Technical details

File name	sample-webp-100mb.webp
Format	WebP (WebP image)
Extension	.webp
MIME type	image/webp
Size	104,857,600 bytes (100 MB)
Kind	Binary
Signature	52 49 46 46 ?? ?? ?? ?? 57 45 42 50
SHA-256	a777130fd1eacca6eebb6e5bdebcba58d12879f5b7c7113b932d52fed7d78efd
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Images

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-webp-100mb.webp     # Linux
shasum -a 256 sample-webp-100mb.webp # macOS

On Windows, run Get-FileHash sample-webp-100mb.webp -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 100 MB?: Yes. It is 104,857,600 bytes, which is 100 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 100 MB WebP file?: A 6844 × 5107 lossless test card coded with literal pixels only. 508 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.
Are the sample WebP files lossy or lossless?: Lossless. They use the VP8L bitstream in an extended container with a small XMP metadata chunk.

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