Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
A heavy hitter at 400x400px, but lovely still.
Source Breezi
A new one called white wall, not by me this time.
Source Yuji Honzawa
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
One more sharp little tile for you. Subtle circles this time.
Source Blunia
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
Remixed from a vector adapted from a jpg on Pixabay. The tile this is constructed from can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo