Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
Prismatic Hypnotic Pattern No Background
Source GDJ
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Utilising a bird from s-light and some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin