Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope 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
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Light and tiny, just the way you like it.
Source Rohit Arun Rao
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo