This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
This is a remix of "geometrical pattern 01".
Source Yamachem
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Floral Background No Black
Source GDJ
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen