If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.
Source V. Hartikainen
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
Prismatic Polyskelion Pattern No Background
Source GDJ
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
Background formed from the original with an emboss effect
Source GDJ
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
This one is amazing, truly original. Go use it!
Source Viahorizon
Prismatic Geometric Pattern Background 2
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen