20 MB SVG sample

An SVG file of exactly 20,971,520 bytes. It is a valid Scalable Vector Graphics file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 20 MB sample, test or dummy SVG file.

sample-svg-20mb.svg

20 MB20,971,520 bytes

Download 20 MB SVG

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/svg+xml
SHA-256: cf69e53d01cab395b6a45c43403bf7e055c79c71bfce956a8fafc7a071ea0777
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 1200 × 900 vector image: a dark background and 285,961 circles and rectangles in six colours. An XML comment before the closing tag brings the file to the exact size.

Shapes	285,961
View box	0 0 1200 900
Scripts	None
External references	None
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-svg-20mb.svg, exactly as they appear in the file.

00000000  3c 3f 78 6d 6c 20 76 65  72 73 69 6f 6e 3d 22 31 |<?xml version="1|
00000010  2e 30 22 20 65 6e 63 6f  64 69 6e 67 3d 22 55 54 |.0" encoding="UT|
00000020  46 2d 38 22 3f 3e 0a 3c  73 76 67 20 78 6d 6c 6e |F-8"?>.<svg xmln|
00000030  73 3d 22 68 74 74 70 3a  2f 2f 77 77 77 2e 77 33 |s="http://www.w3|

Preview

Creates the file in your browser and shows it here.

Where 20 MB matters

A 20,971,520-byte file: right at the default attachment limit of Outlook, and just under the 25 MB ceilings of Gmail and GitHub web uploads. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Microsoft Outlook	20 MB of attachments by default for internet mail accounts	This file is right at the limit; add a second attachment and it is exceeded.
Gmail	25 MB per message	Under the limit, although email encoding adds about a third in transit.
GitHub web uploads	25 MiB per file added through the browser	Accepted. Pushing with Git allows larger files.
Cloudflare Pages assets	25 MiB per file	The largest round size that can be served as a static asset.
Amazon API Gateway	10 MB payload	Rejected; the upload has to go directly to object storage.
ASP.NET Core (Kestrel)	About 28.6 MB request body by default	Accepted with room for the multipart overhead.

All 20 MB sample files

Use this file for

Finding the first upload limit in a new stack
Testing icon pipelines and optimisers
Testing SVG sanitisation on upload

Testing notes for SVG

An SVG shown with an <img> tag cannot run scripts, but the same file opened directly or inlined can. Sanitise uploads or serve them as attachments.
SVG has no intrinsic byte-to-pixel relationship: a few hundred bytes can describe an image of any dimensions.

SVG format reference

Technical details

File name	sample-svg-20mb.svg
Format	SVG (Scalable Vector Graphics)
Extension	.svg
MIME type	image/svg+xml
Size	20,971,520 bytes (20 MB)
Kind	Text
Signature	3C 73 76 67
SHA-256	cf69e53d01cab395b6a45c43403bf7e055c79c71bfce956a8fafc7a071ea0777
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-svg-20mb.svg     # Linux
shasum -a 256 sample-svg-20mb.svg # macOS

On Windows, run Get-FileHash sample-svg-20mb.svg -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 20 MB?: Yes. It is 20,971,520 bytes, which is 20 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 20 MB SVG file?: A 1200 × 900 vector image: a dark background and 285,961 circles and rectangles in six colours. An XML comment before the closing tag brings the file to the exact size.
Do the SVG samples contain scripts?: No. They contain only circles, rectangles and a title element, with no scripts, fonts or external references.

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