iColori colour & pattern tools

Thread count → cloth

Plaid and tartan, written the way the mill writes it.

Set out a thread count, choose a weave, and watch the cloth build itself — with the interlacement drawn thread by thread and a repeat that genuinely tiles. Free, in the browser, nothing uploaded.

No account. No upload. The design travels in the link.

Night Watch 60 x 60 thread seamless tile, thread count K8 B20 K4 W4 thread-count: K8 B20 K4 W4
Night Watch K8 B20 K4 W4 check · 2/2 twill · tile 60 × 60
Harbour 84 x 84 thread seamless tile, thread count G16 S8 Y2 S6 thread-count: G16 S8 Y2 S6
Harbour G16 S8 Y2 S6 check · 2/2 twill · tile 84 × 84
Quay 100 x 4 thread seamless tile, thread count N10 S3 N3 R3 thread-count: N10 S3 N3 R3
Quay N10 S3 N3 R3 stripe · 2/2 twill · tile 100 × 4
Ash Field 272 x 68 thread seamless tile, thread count W12 R8 N2 R2 thread-count: W12 R8 N2 R2
Ash Field W12 R8 N2 R2 check · herringbone · tile 272 × 68

The one thing other generators get wrong

The seamless tile is not the sett.

A sett is the run of threads you write down. The seamless tile is the smallest block that can be laid edge to edge without the weave breaking — and the two are only the same number by accident.

Tile a 2/2 twill at the sett length and the diagonal jumps at every seam. It is the kind of fault that survives a screen and shows up on the cloth.

sett 62 threads, as written
weave repeat 4 ends, 2/2 twill
seamless tile 124 lcm(62, 4) — not 62

The Plaid Designer works this out for you, shows the tile alongside the sett, and offers the two extra threads that collapse it back to one repeat.

What the tool does

Thread count in, cloth out
Type K4 B24 K2 W6 the way the trade writes it. The stripe list, the mirror axes and the cloth all read from the same sett — edit any of them and the others follow.
Real weave structure
Plain, 2/2, 3/1 and 2/1 twill, basket and herringbone, in S or Z. The interlacement is drawn thread by thread, so a twill diagonal runs the way it would on a loom.
Cloth, not a flat fill
Pick a worsted, a woollen, a tweed, a linen or a silk and the yarn changes with it: fibre length decides how much it sheds and how it shines, twist sets the grooves, and slub and crimp keep the ends from running ruler-straight.
Checks and stripes
A check mirrors the sett onto the weft. A stripe runs one colour across it, so the sett reads down the warp alone — half the cloth in the world is set that way.
Honest repeats
The seamless tile is computed from the sett and the weave repeat, not guessed. When they disagree the tool says so and offers to pad the sett.
Files a mill can use
PNG at any scale, SVG as a real vector repeat, and a spec sheet PDF carrying the thread count, the tile size and the finished cloth dimensions at your chosen density.
Colour you can specify
Every colour is matched against our own 48-shade textile library with CIEDE2000 and reported with its ΔE, so you know whether a match is a match or a compromise.
Nothing leaves your browser
The design lives in the URL. Share a link and you have shared the sett itself — there is no upload, no account and no file sitting on our disk.

When a plaid is not the whole job

The rest of the studio.

This tool weaves plaid, free, with no account and no export limit. When the work needs more than that — florals and geometrics, 300 DPI and A4 mill sheets, a whole colourway range batched at once, or simply a design that outlives the browser tab — that is what The Plaid Studio is for.

Visit The Plaid Studio