A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Prismatic Polyskelion Pattern No Background
Source GDJ
A seamless paper background colored in pale yellow.
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
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
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
White circles connecting on a light gray background.
Source Mark Collins
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter