Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Seamless Prismatic Geometric Pattern With Background
Source GDJ
8 by 8 pixels, and just what the title says.
Source pixilated
Sometimes you just need the simplest thing.
Source Fabricio
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
An alternative colour scheme to the original seamless pattern.
Source Firkin
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin