3 MB WebP sample

A WebP file of exactly 3,145,728 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 3 MB sample, test or dummy WebP file.

sample-webp-3mb.webp

3 MB3,145,728 bytes

Download 3 MB WebP

Created in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.

Type: image/webp
SHA-256: af2a018c5bc99bc7d1b18d8734dc77f0d3f59a573f394b9a8433448e9454619b
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 1190 × 881 lossless test card coded with literal pixels only, so the size is set by the pixel count. 390 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.

Dimensions	1,190 × 881 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-3mb.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 2f 00  57 45 42 50 56 50 38 58 |RIFF../.WEBPVP8X|
00000010  0a 00 00 00 04 00 00 00  a5 04 00 70 03 00 56 50 |...........p..VP|
00000020  38 4c 4c fe 2f 00 2f a5  04 dc 00 80 40 00 00 00 |8LL././.....@...|
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.

Where 3 MB matters

A 3,145,728-byte file, 3 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.

All 3 MB sample files

Use this file for

Finding the first upload limit in a new stack
Testing image CDNs and optimisation
Testing whether upload forms accept modern formats

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-3mb.webp
Format	WebP (WebP image)
Extension	.webp
MIME type	image/webp
Size	3,145,728 bytes (3 MB)
Kind	Binary
Signature	52 49 46 46 ?? ?? ?? ?? 57 45 42 50
SHA-256	af2a018c5bc99bc7d1b18d8734dc77f0d3f59a573f394b9a8433448e9454619b
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-3mb.webp     # Linux
shasum -a 256 sample-webp-3mb.webp # macOS

On Windows, run Get-FileHash sample-webp-3mb.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 3 MB?: Yes. It is 3,145,728 bytes, which is 3 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 3 MB WebP file?: A 1190 × 881 lossless test card coded with literal pixels only, so the size is set by the pixel count. 390 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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