A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
A version without colours blended together to give a different look.
Source Firkin
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A free seamless background texture of "timber wall" (colored in dark brown).
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 very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
8 by 8 pixels, and just what the title says.
Source pixilated
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin