A heavy hitter at 400x400px, but lovely still.
Source Breezi
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
White little knobs, coming in at 10x10px. Sweet!
Source Amos
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Groovy Concentric Background 5
Source GDJ
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
Source V. Hartikainen
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran