A heavy hitter at 400x400px, but lovely still.
Source Breezi
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Seamless Green Tile Background
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
One more sharp little tile for you. Subtle circles this time.
Source Blunia