Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background
Source GDJ
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Here is a new seamless wood texture for using as blog or website backgrounds.
Source V. Hartikainen