A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
There are many carbon patterns, but this one is tiny.
Source Designova
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
An alternative colour scheme to the original seamless pattern.
Source Firkin
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
Prismatic Abstract Background Design
Source GDJ
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo