50 KB WebP sample

A WebP file of exactly 51,200 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 50 KB sample, test or dummy WebP file.

sample-webp-50kb.webp

50 KB51,200 bytes

Download 50 KB 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: 293663f07a0465ad1239034556178332c8ee67d64ff0ace75f33c8813c80b249
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 148 × 114 lossless test card coded with literal pixels only, so the size is set by the pixel count. 416 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.

Dimensions	148 × 114 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-50kb.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 c7 00 00  57 45 42 50 56 50 38 58 |RIFF....WEBPVP8X|
00000010  0a 00 00 00 04 00 00 00  93 00 00 71 00 00 56 50 |...........q..VP|
00000020  38 4c 32 c6 00 00 2f 93  40 1c 00 80 40 00 00 00 |8L2.../.@...@...|
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 50 KB matters

A 51,200-byte file, half of the default body limit in several web frameworks. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Express body parsers	100 KB by default	50 KB is accepted; 500 KB is rejected with 413 unless the limit is raised.
Base64 encoding	Adds 33 percent	50 KB becomes about 67 KB when embedded in JSON.

All 50 KB sample files

Use this file for

Checking thumbnail and icon handling
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-50kb.webp
Format	WebP (WebP image)
Extension	.webp
MIME type	image/webp
Size	51,200 bytes (50 KB)
Kind	Binary
Signature	52 49 46 46 ?? ?? ?? ?? 57 45 42 50
SHA-256	293663f07a0465ad1239034556178332c8ee67d64ff0ace75f33c8813c80b249
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-50kb.webp     # Linux
shasum -a 256 sample-webp-50kb.webp # macOS

On Windows, run Get-FileHash sample-webp-50kb.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 50 KB?: Yes. It is 51,200 bytes, which is 50 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 50 KB WebP file?: A 148 × 114 lossless test card coded with literal pixels only, so the size is set by the pixel count. 416 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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