An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Retro Circles Background 5 No Black
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
A seamless pattern of leopard skin. It should look nice as a background element on web pages.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Dark blue concrete wall with some small dust spots.
Source Atle Mo
8 by 8 pixels, and just what the title says.
Source pixilated
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
This was formed by distorting an image of a background on Pixabay.
Source Firkin