About

Duplicating a single image element into a composite layout is a routine operation in asset production, pattern design, and print preparation. Manual duplication in raster editors accumulates alignment errors and produces inconsistent spacing. This tool accepts any PNG or raster image file, computes a precise placement grid based on your selected arrangement mode (grid, strip, radial, or scatter), and renders all n clones onto a single output canvas at exact pixel coordinates. The composite is exported as a lossless PNG. Spacing is computed in pixels. Rotations use standard trigonometric placement where each clone i is offset by θ = 2πn radians in radial mode.

Limitation: maximum output canvas dimension is capped at 8192 × 8192 px to stay within browser memory limits. Clone counts above 100 with large source images may produce canvases that exceed this cap, in which case the tool auto-scales the source to fit. The random scatter mode uses a seeded pseudo-random distribution. Results are deterministic for the same seed value, which means you can reproduce a layout by keeping the same settings.

Formulas

Grid arrangement computes column and row counts from total clone count n:

cols = ceil(√n) rows = ceil(ncols)

Each clone i is placed at canvas coordinates:

x_i = (i mod cols) × (w + s) y_i = floor(icols) × (h + s)

For radial mode, clone i of n total is placed at angle θ_i:

θ_i = 2π ⋅ in x_i = c_x + r ⋅ cos(θ_i) y_i = c_y + r ⋅ sin(θ_i)

Where w = clone width, h = clone height, s = spacing in pixels, r = radial radius, c_x and c_y = center coordinates of the output canvas. Scale jitter applies a multiplier sampled from uniform distribution [1 − j, 1 + j] where j is the jitter fraction.

Reference Data

Arrangement Mode	Layout Description	Best Use Case	Max Recommended Clones
Grid	Uniform rows × columns with equal spacing	Pattern tiles, wallpapers, sprite sheets	100
Horizontal Strip	Single row, left to right	Film strips, sequential frames, banners	20
Vertical Strip	Single column, top to bottom	Sidebar assets, vertical banners	20
Radial	Clones arranged in a circle around center	Logo effects, mandala patterns, clock faces	36
Random Scatter	Pseudo-random positions within bounding box	Confetti effects, organic layouts, collages	50
Clone Effect Parameters
Scale Jitter	Random size variation per clone: 0% - 50%	Organic, non-uniform compositions	-
Rotation Jitter	Random rotation per clone: 0° - 180°	Scattered, dynamic layouts	-
Opacity Variation	Random opacity: 0.2 - 1.0	Fade effects, layered depth	-
Flip Horizontal	Mirror every other clone on X axis	Symmetrical patterns	-
Flip Vertical	Mirror every other clone on Y axis	Reflected tile layouts	-
Output Format Specs
Format	PNG (lossless, RGBA)
Max Canvas	8192 × 8192 px
Color Depth	32-bit (8 bits per channel × 4 channels)
Transparency	Preserved from source (alpha channel maintained)

Frequently Asked Questions

The tool automatically scales down the source image proportionally so that the final composite fits within the 8192 × 8192 px browser canvas limit. A toast notification informs you of the applied downscale factor. The original file is never modified.

Yes. The scatter mode uses a deterministic pseudo-random number generator seeded from your settings (clone count + spacing value). Identical inputs produce identical outputs. Changing any parameter shifts the seed and produces a new layout.

Fully preserved. The tool draws source images onto an RGBA canvas using drawImage which retains all transparency data. The exported PNG is 32-bit RGBA. No premultiplied alpha conversion occurs.

Clones are distributed at equal angular intervals of 2πn radians regardless of whether n divides evenly into 360°. A single clone is placed at the top (12 o'clock position). Two clones sit at 0° and 180°. All configurations produce visually balanced results.

Yes. The tool accepts any browser-decodable raster format: PNG, JPEG, WebP, GIF (first frame), BMP, ICO, and AVIF (where supported). The output is always exported as lossless PNG regardless of input format.

Each clone receives a random scale multiplier drawn from a uniform distribution between [1 − j, 1 + j] where j is the jitter fraction (e.g., 0.3 for 30%). A value of 0 means all clones are identical size. A value of 0.5 means clones range from 50% to 150% of original size.