Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Prismatic Groovy Concentric Background 2
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Used a cherry by doctormo to make this seamless pattern
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Prismatic Curved Diamond Pattern No Background
Source GDJ
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin