SVG Pattern Background Generator

Generate seamless tiling SVG patterns (stripes, dots, waves, chevrons) with color and scale controls.

Tested tool guide Tested browser tools Checked August 16, 2026

What SVG Pattern Background Generator does, with a checked example

You choose a motif - stripes, dots, waves, or chevrons - and the tool emits SVG markup: one repeat tile that the browser paints edge to edge across whatever rectangle it fills. Controls set motif geometry, tile size, and foreground and background colors, so the same pattern can read as fine texture or bold graphic. What most people get wrong first: a pattern tile is clipped to its own rectangle, not wrapped. A shape touching the tile edge is cut off, and unless the clipped halves rejoin cleanly with the neighboring tiles, you get a visible seam grid.

Worked example

A concrete input and expected output from the current implementation.

Input

Pattern: dots. Tile: 20 x 20 px. Dot radius: 3 px. Color: #1C1C1E. Background: transparent.

Expected output

<pattern id="dotgrid" width="20" height="20" patternUnits="userSpaceOnUse">
  <circle cx="0" cy="0" r="3" fill="#1C1C1E"/>
  <circle cx="10" cy="0" r="3" fill="#1C1C1E"/>
  <circle cx="0" cy="10" r="3" fill="#1C1C1E"/>
  <circle cx="10" cy="10" r="3" fill="#1C1C1E"/>
</pattern>

Four circles at the corners and edge midpoints of a 20 px cell place a dot at every lattice point spaced 10 px apart in both directions: corner dots quarter across four tiles, edge-midpoint dots halve across two. Dot diameter is 6 px, so the gap between dots is 10 - 6 = 4 px, and every dot renders complete even though three of the four circles cross tile boundaries.

How the result is produced

One tile, repeated by translation

The generated pattern element declares a cell width and height, and the browser clips all drawing inside it to that cell, then tiles the cell across the filled shape. With patternUnits set to userSpaceOnUse the tile keeps its absolute pixel size no matter the element; under the default objectBoundingBox, width and height become fractions of the element, so the same pattern rescales when applied to a different-size shape.

Where seams come from

A motif drawn across a tile boundary is simply cut there; the pattern only looks continuous when the cut pieces rejoin in the next tile. Recipes: dots on tile corners split into quarters that meet across four tiles, stripes span the full tile dimension, diagonals and waves are drawn through the corners, and stroked lines overhang the edge by half the stroke width so clipping does not shave them.

Good uses

Repeating texture behind a page hero, card, or dashboard panel, inlined as a CSS background-image data URI so it tiles across any screen width.
A quiet dot or line grid behind a chart, keeping the tile size tuned so the texture stays at the same physical scale on both small and large elements.
A brand-colored chevron or weave for mockups and export art, fixed once in the tile and reused everywhere without redoing the geometry.

Limits and checks

Seam-free at preview size does not guarantee seam-free at other sizes; patterns relying on corner dots or edge overhang also break if the exported tile is cropped or trimmed.
Units silently change the result: the same width value means fixed pixels under userSpaceOnUse but a percentage of the element under objectBoundingBox, so a pattern can rescale when applied to a bigger or smaller shape.
The pattern is transparent unless the tile paints a full-cover background rect, so gaps show whatever fill sits underneath; strokes centered on a tile edge also lose half their width to clipping.

Common questions

Why does my pattern show a grid of seams?

Motifs touching the tile edge are clipped there and never rejoin their neighbors. Redraw the boundary shapes so they wrap: dots on tile corners, stripes spanning the full tile dimension, diagonals drawn through corners, and stroked lines extended past the edge by half the stroke width. Painting a full-tile background rect can also mask tiny boundary mismatches.

Can I use the output as a CSS background on my website?

Yes. Either point background-image at the exported SVG file, or inline the markup as a data URI. In a data URI, every # (such as the one in url(#id)) must be written %23, and angle brackets and quotes must be URL-encoded, or the fill reference breaks. One small tile covers an element of any size.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.