A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Sharp pixel pattern, just like the good old days.
Source Paridhi
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Prismatic Abstract Geometric Background 3
Source GDJ
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This was formed by distorting an image of a background on Pixabay.
Source Firkin