The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A free background pattern with abstract green tiles.
Source V. Hartikainen
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Prismatic Geometric Pattern Background 2
Source GDJ
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
From a drawing in 'Codogno e il suo territorio nella cronaca e nella storia'', Gio and Giarella Cairo, 1897.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick