Render i-480978106 page screenshot on macOS with headless Chrome/Chromium

render_i480978106_macos.sh

#!/usr/bin/env bash
set -euo pipefail

# Usage:
#   ./render_i480978106_macos.sh [page_path_or_url] [output_png]
#
# Examples:
#   ./render_i480978106_macos.sh
#   ./render_i480978106_macos.sh ~/my-host/static-files/i-480978106/index.html
#   ./render_i480978106_macos.sh https://static.januschka.com/i-480978106/

INPUT="${1:-$HOME/my-host/static-files/i-480978106/index.html}"
OUT="${2:-$PWD/i-480978106-macos.png}"

find_browser() {
  local candidates=(
    "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"
    "/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary"
    "/Applications/Chromium.app/Contents/MacOS/Chromium"
    "$(command -v google-chrome 2>/dev/null || true)"
    "$(command -v chromium 2>/dev/null || true)"
    "$(command -v chromium-browser 2>/dev/null || true)"
  )
  for b in "${candidates[@]}"; do
    if [[ -n "${b}" && -x "${b}" ]]; then
      echo "${b}"
      return 0
    fi
  done
  return 1
}

to_url() {
  local in="$1"
  if [[ "$in" =~ ^https?:// ]]; then
    echo "$in"
    return 0
  fi
  if [[ "$in" =~ ^file:// ]]; then
    echo "$in"
    return 0
  fi
  if [[ ! -e "$in" ]]; then
    echo "ERROR: file not found: $in" >&2
    exit 1
  fi
  python3 - "$in" <<'PY'
import pathlib, sys, urllib.parse
p = pathlib.Path(sys.argv[1]).expanduser().resolve()
print("file://" + urllib.parse.quote(str(p)))
PY
}

BROWSER="$(find_browser)" || {
  echo "ERROR: Could not find Chrome/Chromium on macOS." >&2
  exit 1
}

URL="$(to_url "$INPUT")"

echo "Browser: $BROWSER"
echo "URL:     $URL"
echo "Output:  $OUT"

"$BROWSER" \
  --headless=new \
  --disable-gpu \
  --hide-scrollbars \
  --window-size=1400,2600 \
  --virtual-time-budget=5000 \
  --run-all-compositor-stages-before-draw \
  --screenshot="$OUT" \
  "$URL"

echo "Done: $OUT"

# Auto-open on macOS (optional)
open "$OUT" >/dev/null 2>&1 || true