Transparent Square Tiles@2X #299
Grid CC BY-SA 3.0The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
More Textures
Rebel #829
Dark CC BY-SA 3.0Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
"Black Metal Grid", Seamless Background Pattern #1080
Metal CC BY-SA 3.0A free seamless background pattern for use on websites.
Source V. Hartikainen
Light Brown Wallpaper With Vertical Stripes #905
Stripes CC BY-SA 3.0This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
Dark Tile-able Grunge Texture #1123
Grunge CC BY-SA 3.0Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Prismatic Curved Diamond Pattern No Background #536
Diamond CC 0Prismatic Curved Diamond Pattern No Background
Source GDJ
Background pattern 336 (colour 3) #1719
Blue CC 0Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Faded Diagonal Stripes #1001
Stripes CC BY-SA 3.0Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
Source V. Hartikainen
Decorative divider 215 #2242
Dark CC 0Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Background pattern 314 (colour 3) #1837
Green CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Wavy background #2013
Pink CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Tile-able Wall Texture (Light Orange Brown) #1051
Stone CC BY-SA 3.0A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
Pink Clouds Background #1230
Pink CC BY-SA 3.0Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Leafy pattern 12 (colour 2) #1761
Red CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Argyle #643
Dark CC BY-SA 3.0Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Decorative divider #1995
Yellow CC 0From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Wild Oliva #988
Dark CC BY-SA 3.0Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
Wood #49
Wood CC BY-SA 3.0Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
Abstract Tiled Background Extended 8 #519
Noise CC 0Abstract Tiled Background Extended 8
Source GDJ
Prismatic Groovy Concentric Background 5 No Black #467
Dark CC 0Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Background pattern 308 (colour 3) #1870
Colorful CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Background pattern 117@2X #525
Noise CC 0A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
Background pattern 29 #200
Dark CC 0Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin