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wildhorn-static-ads/2-make/composite.md · 147 lines
How the real product and the exact text are pasted on any image by script: every option, with validated examples.
Identical in both skills — same page in static-ads.
Download the whole skill (zip)

composite.py — real product + exact text on any image

python3 scripts/composite.py IN.png OUT.png spec.json

Used for: every seedream_comp ad (scene by Seedream, everything else by script), every pure_comp ad (text-only templates on a flat colour), the A25 method (text on the edited template), and recomposites (text moved on an existing scene: the run-1 recomp engine, e.g. #73 centring). It never misspells, never squashes the product, never invents a logo — which is why it is the safety net of the whole chain.

Coordinate system

All positions and sizes are fractions of the image: x of width W, y of height H, size = font height as a fraction of H. The same spec works at 1024×1024, 1024×1792 or 2048×2048.

Drawing order

rects (solid rectangles) → 2. band → 3. texts (in list order) → 4. strikes → 5. products (jar, then jars). Products are drawn last, so they sit on top of text and rects.

Top-level keys

Key	Type	Meaning
`bg`	`"#hex"`	only for `pure_comp`: srun.py creates a 1024×1024 canvas of this colour (`size` [w,h] optional)
`rects`	`[[x0, y0, x1, y1, "#hex"], …]`	solid rectangles (white band for a headline, a tag, an underline rule). S58: `[[0, 0, 1, 0.17, "#FFFFFF"]]` top white band; S11 v5: `[[0.045, 0.85, 0.40, 0.8525, "#E07A2B"]]` thin orange rule
`band`	`{"y0", "y1", "color"}`	full-width band
`texts`	list of text blocks	below
`strikes`	`[[x0, y0, x1, y1, "#hex"], …]`	straight lines, width = max(3 px, 0.6 % of H): crossed prices. S74: `[[0.415, 0.79, 0.512, 0.79, "#FFFFFF"]]` over "$100"
`jar`	product block	one product
`jars`	list of product blocks	more products (D6: as many as the template's placements)

Product block (`jar` / items of `jars`)

Key	Meaning
`x`	horizontal centre of the product
`y`	bottom edge of the product (where it stands)
`h`	product height; width follows the cutout's real aspect ratio (C6 — never squashed)
`noshadow`	`true` → no contact shadow (a product floating, or used as a head: S11 head jar)
`src`	optional other cutout (multi-product brands); default = brand.json `product_cutout`

The contact shadow is a soft black ellipse (alpha 70) under the base (C10). The cutout must be an RGBA PNG/WebP with a clean transparent background (Wildhorn: /srv/wildhorn-lp/p6/jar-30.webp, 416×793).

Text block

Key	Default	Meaning
`y`	—	top of the first line
`size`	—	font size as fraction of H (0.11 = huge headline, 0.06 headline, 0.04 subline, 0.018–0.025 small print)
`font`	`Montserrat`	`Anton`, `Montserrat` (variable), `Oswald` (variable), `Fredoka`, `DejaVu` (Bold — has ✓ ✕ → ★ glyphs) + any brand.json `fonts`
`weight`	800	variable-font weight (Montserrat/Oswald): 500 regular-ish, 700 bold, 800 heavy
`runs`	—	`[[text, "#hex"], [text, "#hex", weight], …]` — coloured/weighted segments on the same lines (word-wrapped together)
`t` + `color`	—	simple alternative to `runs`
`align`	`center`	`center` (around `cx`) or `left` (from `x`)
`cx`	0.5	centre axis when centred — put it on the template's anchor (C9: #73 text on the eggplant's axis, `cx: 0.515`)
`x`	0.05	left edge when `align: left`
`maxw`	0.9	wrap width (fraction of W)
`lh`	1.18	line height multiplier
`box`	—	`"#hex"` → a filled box behind each line (white-on-red labels, "IS BACK ON THE MENU ;)" on red)
`shadow`	false	3 px dark drop shadow (text on photos)
`sunscreen`	false	soft embossed look (own layer, blurred brown shadow, slight blur) — a fallback for painted text; Nano Banana Pro paints it better (A10, D5)

Rules for text blocks:

One block per template text slot, same order and same count (B1). Copy positions and sizes from the template (C9): measure the template at full resolution.
Keep the template's spacing between headline and secondary text (C9 — #73 failed twice on this).
No emoji (D9). Use DejaVu for ✓ ✕; give the glyph its own block and the words their own block (S11 v5 pattern below) so each uses the right font.
Wording identical to texts in the spec — the review page shows texts, the image shows composite; they must match.
Prices/numbers only from brand.json (B20).

Examples (real, validated)

Text-only post (S4, pure_comp)

{"bg": "#FF5A00", "texts": [
 {"y": 0.10, "size": 0.068, "font": "Montserrat", "weight": 500, "align": "left", "x": 0.075, "maxw": 0.86, "lh": 1.32,
  "runs": [["we", "#FFFFFF", 800], [" want", "#FFFFFF", 800], [" 5", "#FFFFFF", 800], [" men", "#FFFFFF", 800], [" who", "#111111", 500],
           [" realized", "#FFFFFF", 800], [" that “it's just a dad bod” isn't a personality.", "#111111", 500]]},
 {"y": 0.555, "size": 0.068, "font": "Montserrat", "weight": 500, "align": "left", "x": 0.075, "maxw": 0.86, "lh": 1.32,
  "runs": [["wildhorn.", "#FFFFFF", 800], [" t up or shut up.", "#111111", 500]]},
 {"y": 0.80, "size": 0.068, "font": "Montserrat", "weight": 800, "align": "left", "x": 0.075, "maxw": 0.86, "runs": [["are u one of them?", "#FFFFFF", 800]]}]}

Poster with price block and crossed price (S74, seedream_comp)

{"jar": {"x": 0.82, "y": 0.97, "h": 0.36}, "texts": [
  {"y": 0.022, "size": 0.095, "font": "Anton", "runs": [["BEER BELLY?", "#FFE500"]]},
  {"y": 0.128, "size": 0.05, "font": "Montserrat", "weight": 800, "runs": [["CAN'T RELATE.", "#FFFFFF"]]},
  {"y": 0.66, "size": 0.04, "font": "Anton", "align": "left", "x": 0.06, "runs": [["SPECIAL DEAL", "#FFFFFF"]]},
  {"y": 0.72, "size": 0.12, "font": "Anton", "align": "left", "x": 0.06, "runs": [["$49.95", "#FFE500"]]},
  {"y": 0.75, "size": 0.05, "font": "Anton", "align": "left", "x": 0.42, "runs": [["$100", "#FFFFFF"]]},
  {"y": 0.88, "size": 0.05, "font": "Anton", "align": "left", "x": 0.06, "runs": [["THIS WEEK ONLY", "#FFFFFF"]]}],
 "strikes": [[0.415, 0.79, 0.512, 0.79, "#FFFFFF"]]}

Two-weight headline + side copy + tag (S79, seedream_comp, man boobs — "try 1 is perfect")

{"jar": {"x": 0.79, "y": 0.96, "h": 0.36}, "rects": [[0.33, 0.85, 0.63, 0.92, "#FFFFFF"]], "texts": [
  {"y": 0.04, "size": 0.062, "font": "Montserrat", "weight": 500, "runs": [["MORE CHEST DAY ", "#FFFFFF", 500], ["WON'T", "#FFFFFF", 800]]},
  {"y": 0.115, "size": 0.062, "font": "Montserrat", "weight": 800, "runs": [["FIX YOUR MAN BOOBS", "#FFFFFF"]]},
  {"y": 0.28, "size": 0.042, "font": "Montserrat", "weight": 500, "align": "left", "x": 0.57, "maxw": 0.4, "runs": [["It's not a gym problem.", "#FFFFFF"]]},
  {"y": 0.41, "size": 0.042, "font": "Montserrat", "weight": 800, "align": "left", "x": 0.57, "maxw": 0.4, "runs": [["It's a testosterone problem.", "#F26B1D"]]},
  {"y": 0.862, "size": 0.045, "font": "Montserrat", "weight": 800, "align": "left", "x": 0.36, "runs": [["THE FIX →", "#F26B1D"]]}]}

Headline on a white top band, product in her raised hand (S58)

{"rects": [[0, 0, 1, 0.17, "#FFFFFF"]], "jar": {"x": 0.82, "y": 0.72, "h": 0.36},
 "texts": [{"y": 0.045, "size": 0.062, "font": "Montserrat", "weight": 800, "align": "left", "x": 0.03, "runs": [["Make her eat the sheets", "#111111"]]}]}

(The template's 🥵🌶️ were dropped: emoji can't be composited — D9. The sell version of S58 is try 1, made by OpenAI with the emoji drawn.)

Two products + shadowed text on a painting (S11 round 3: head jar without shadow)

{"jars": [{"x": 0.6, "y": 0.42, "h": 0.30, "noshadow": true}, {"x": 0.86, "y": 0.97, "h": 0.24}], "texts": [
  {"y": 0.55, "size": 0.075, "font": "Oswald", "weight": 700, "align": "left", "x": 0.05, "runs": [["FALLING IN LOVE", "#F2E6D0"]], "shadow": true},
  {"y": 0.635, "size": 0.075, "font": "Oswald", "weight": 700, "align": "left", "x": 0.05, "runs": [["WITH THIS JAR", "#F2E6D0"]], "shadow": true}]}

Check marks with DejaVu + text in Oswald (S11 v5, validated — A25)

{"jar": {"x": 0.845, "y": 0.985, "h": 0.19}, "rects": [[0.045, 0.85, 0.40, 0.8525, "#E07A2B"]], "texts": [
  {"y": 0.622, "size": 0.059, "font": "Oswald", "weight": 700, "align": "left", "x": 0.045, "maxw": 0.95, "runs": [["FALLING IN LOVE", "#EDE6DA"]]},
  {"y": 0.68,  "size": 0.059, "font": "Oswald", "weight": 700, "align": "left", "x": 0.045, "maxw": 0.95, "runs": [["WITH THIS JAR", "#EDE6DA"]]},
  {"y": 0.745, "size": 0.040, "font": "Oswald", "weight": 700, "align": "left", "x": 0.045, "maxw": 0.95, "runs": [["WAS THE BEST DECISION", "#E07A2B"]]},
  {"y": 0.789, "size": 0.040, "font": "Oswald", "weight": 700, "align": "left", "x": 0.045, "maxw": 0.95, "runs": [["I EVER MADE.", "#E07A2B"]]},
  {"y": 0.857, "size": 0.018, "font": "Oswald", "weight": 500, "align": "left", "x": 0.045, "maxw": 0.72, "runs": [["IT MELTED MY BEER BELLY AND MY WOMAN", "#EDE6DA"]]},
  {"y": 0.878, "size": 0.018, "font": "Oswald", "weight": 500, "align": "left", "x": 0.045, "maxw": 0.72, "runs": [["FELL FOR ME ALL OVER AGAIN.", "#EDE6DA"]]},
  {"y": 0.909, "size": 0.017, "font": "DejaVu", "align": "left", "x": 0.045, "runs": [["✓", "#E07A2B"]]},
  {"y": 0.909, "size": 0.018, "font": "Oswald", "weight": 500, "align": "left", "x": 0.078, "runs": [["FLATTER BEER BELLY", "#EDE6DA"]]},
  {"y": 0.931, "size": 0.017, "font": "DejaVu", "align": "left", "x": 0.045, "runs": [["✓", "#E07A2B"]]},
  {"y": 0.931, "size": 0.018, "font": "Oswald", "weight": 500, "align": "left", "x": 0.078, "runs": [["MORE ENERGY", "#EDE6DA"]]},
  {"y": 0.953, "size": 0.017, "font": "DejaVu", "align": "left", "x": 0.045, "runs": [["✓", "#E07A2B"]]},
  {"y": 0.953, "size": 0.018, "font": "Oswald", "weight": 500, "align": "left", "x": 0.078, "runs": [["FEEL LIKE HER HERO", "#EDE6DA"]]}]}

Text centred on the template's anchor + label boxes (run 1 #69 / #73 recomposites)

{"jar": {"x": 0.5, "y": 0.86, "h": 0.36}, "texts": [
  {"y": 0.06, "size": 0.08, "font": "Anton", "runs": [["SHE SAYS DESSERT", "#FFFFFF"]], "shadow": true},
  {"y": 0.16, "size": 0.08, "font": "Anton", "box": "#E01B1B", "runs": [["IS BACK ON THE MENU ;)", "#FFFFFF"]]}]}

{"texts": [{"y": 0.27, "size": 0.12, "font": "Anton", "cx": 0.515, "runs": [["NO MORE", "#FFFFFF"]], "shadow": true},
           {"y": 0.525, "size": 0.03, "font": "Montserrat", "weight": 800, "cx": 0.515, "runs": [["ORGAN SUPPLEMENTS HAVE EVOLVED", "#FFFFFF"]], "shadow": true}],
 "jar": {"x": 0.2, "y": 0.97, "h": 0.30}}

Workflow to write a composite spec

Open the template at full resolution; for each text slot note top y, height (→ size), alignment, colour, weight, font family look.
Pick the closest font (Anton = condensed poster caps; Oswald = condensed; Montserrat = geometric sans; Fredoka = rounded/playful).
Product: where does the template's product stand (bottom edge → y), centre (x), height (h)? Same scale as theirs (C17).
Render, open the output at full resolution, compare side by side with the template (spacing, overlap, centring), adjust, re-render. Re-renders are free (no API call).