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
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Continuing the geometric trend, here is one more.
Source Mike Warner
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
From an image on opengameart.org shared by rubberduck.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin