This seventeen-square source places eight blue circular petal marks around a gold center. The original background is transparent, with black RGB values hidden behind zero alpha. It is a purpose-made raster illustration for testing compositing as well as floral symmetry. The crochet result uses a white background because the converter composites transparent source pixels over white before selecting the yarn palette.
Verify the alpha result independently
Eight thirteen-pixel petal marks produce 104 blue pixels. The center contains twenty-one gold pixels, leaving 164 transparent positions in the 289-cell input. After white compositing, the output budgets must be 104 blue, twenty-one gold and 164 white stitches. Hidden black channel values must not become black crochet cells when alpha is zero. Keep the original PNG to preserve that test; saving it through an opaque editor can remove the transparency behavior being studied.
Use reflection axes as checks
The native drawing is symmetric across its horizontal and vertical center lines. Its petal centers are explicit whole-pixel positions, so those two reflections should reproduce the exact source. A ninety-degree rotation also preserves the arrangement. Do not infer a smooth circular flower from that discrete symmetry: the mark edges are still whole-cell steps. Inspect the output graph before interpreting a different display scale as a changed petal shape.
Choose the physical background deliberately
Transparent image positions become white yarn positions in the saved conversion, not holes in the fabric. You may recolor that yarn slot deliberately after conversion, but then keep a separate export recording the changed palette. Work all seventeen positions in every row. A light background and gold center need enough contrast in real yarn to remain distinct even though their source RGB values are different.
FAQ and common mistakes
Why is there no transparent yarn?
The converter resolves alpha against white before quantization. Crochet cells still need a worked color.
Why did a black background appear?
Check the source alpha and any external editor's export settings. The provided PNG contains zero-alpha black, which should composite to white.
Can I leave the transparent regions unworked?
No. The graph is a solid rectangle. Openwork requires a different stitch topology and position budget.
Download the source and reproduce the conversion
Download the original PNG input. This code-drawn illustration is shown enlarged with crisp pixels below; it is not documentary photography.
In the Pixel-to-Crochet Chart Converter, set 17 columns, 17 rows and a maximum of 3 colors before choosing the PNG file. Conversion occurs locally. Use Reprocess source image after changing resolution or the color limit. The exact native source uses 3 output palette slots: yarn 1 #ffffff (164 stitches); yarn 2 #4a638b (104 stitches); yarn 3 #dcb540 (21 stitches).
Download the exact converted project JSON for restoration and comparison. The saved grid uses the lower-left origin. Preserve it before trying another image or palette; a resized or reduced version is a separate design.
Work the actual counted fabric
Use compatible smooth yarns and a suitable trial hook. Chain 18 and work 17 US single crochets from the second chain. Later rows use one uncounted turning chain and alternate working direction. Change color on the final pull-through before the next yarn. In UK terminology these single crochets are double crochets. Follow every row below, then fasten off and weave ends. Measure a washed sample for physical dimensions and material consumption; the pixel budget excludes carries, tails, seams and any later border. See the chart-reading guide for matching the symbols to the written route.
In the first listed working color, ch 18. Start in the second chain from hook. Read right to left: #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff, #dcb540, #dcb540, #dcb540, #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #dcb540, #dcb540, #dcb540, #dcb540, #dcb540, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #dcb540, #dcb540, #dcb540, #dcb540, #dcb540, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #dcb540, #dcb540, #dcb540, #dcb540, #dcb540, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff, #dcb540, #dcb540, #dcb540, #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #ffffff, #4a638b, #4a638b, #4a638b, #4a638b, #4a638b, #ffffff, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read left to right: #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #4a638b, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
Ch 1, turn (does not count). Read right to left: #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #4a638b, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff, #ffffff. Work one sc per cell; change color on final pull-through. Carry inactive yarn loosely. [17 stitches]
