Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:https://jp.pinterest.com/pin/500744052301423641/
Source Yamachem
Background formed from the original with an emboss effect.
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Element of beach pattern with background.
Source Rones
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
Based on an image that was uploaded to Pixabay by devanath
Source Firkin