diff --git a/docs/pack-profile-analysis.md b/docs/pack-profile-analysis.md
index c38524c..91126e9 100644
--- a/docs/pack-profile-analysis.md
+++ b/docs/pack-profile-analysis.md
@@ -40,6 +40,33 @@ python3 scripts/pack-profile-report.py \
   m2p=logs/pack_profile.m2p.txt
 ```
 
+For repeated testing, use the wrapper scripts:
+
+```bash
+./scripts/capture-pack-profile.sh \
+  --runtime-root ../m2dev-client \
+  --label pck
+```
+
+This stages the runtime into `build-mingw64-lld/bin`, runs the client with
+`M2PACK_PROFILE=1`, then archives:
+
+- raw report: `build-mingw64-lld/bin/log/pack-profile-runs/<label>.pack_profile.txt`
+- parsed summary: `build-mingw64-lld/bin/log/pack-profile-runs/<label>.summary.txt`
+
+To run a full `pck` vs `m2p` comparison in one go:
+
+```bash
+./scripts/compare-pack-profile-runs.sh \
+  --left-label pck \
+  --left-runtime-root /path/to/runtime-pck \
+  --right-label m2p \
+  --right-runtime-root /path/to/runtime-m2p
+```
+
+The script captures both runs back-to-back and writes a combined compare report
+into the same output directory.
+
 You can also summarize a single run:
 
 ```bash
diff --git a/scripts/capture-pack-profile.sh b/scripts/capture-pack-profile.sh
new file mode 100755
index 0000000..a82614e
--- /dev/null
+++ b/scripts/capture-pack-profile.sh
@@ -0,0 +1,193 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  capture-pack-profile.sh [options] [build-bin-dir] [-- <client args...>]
+
+Examples:
+  capture-pack-profile.sh --label pck
+  capture-pack-profile.sh --runtime-root ../m2dev-client --label baseline
+  capture-pack-profile.sh ./build-mingw64-lld/bin -- --m2pack-strict-hash 1
+
+Options:
+  --runtime-root DIR   Stage runtime content from DIR before launching
+  --label NAME         Output label for the captured report
+  --out-dir DIR        Directory for archived raw + summary reports
+  --timeout SEC        Overrides M2_TIMEOUT for the headless run
+  --copy-runtime       Materialize runtime instead of symlinking it
+  -h, --help           Show this help
+
+Behavior:
+  - Enables M2PACK_PROFILE=1 for the client run
+  - Archives build-bin-dir/log/pack_profile.txt under --out-dir
+  - Writes a parsed summary next to the raw report
+  - Treats timeout exit codes (124/137) as acceptable if the report exists
+
+Environment overrides:
+  M2_STAGE_RUNTIME_SCRIPT   path to stage-linux-runtime.sh
+  M2_HEADLESS_RUN_SCRIPT    path to run-wine-headless.sh
+  M2_PACK_PROFILE_PARSER    path to pack-profile-report.py
+EOF
+}
+
+sanitize_label() {
+  printf '%s' "$1" \
+    | tr '[:upper:]' '[:lower:]' \
+    | sed -E 's/[^a-z0-9._-]+/-/g; s/^-+//; s/-+$//; s/-{2,}/-/g'
+}
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(realpath "$script_dir/..")"
+default_build_bin_dir="$repo_root/build-mingw64-lld/bin"
+default_runtime_root="$repo_root/../m2dev-client"
+
+stage_script="${M2_STAGE_RUNTIME_SCRIPT:-$script_dir/stage-linux-runtime.sh}"
+run_script="${M2_HEADLESS_RUN_SCRIPT:-$script_dir/run-wine-headless.sh}"
+parser_script="${M2_PACK_PROFILE_PARSER:-$script_dir/pack-profile-report.py}"
+
+runtime_root=""
+label=""
+out_dir=""
+timeout_seconds="${M2_TIMEOUT:-20}"
+copy_runtime=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --runtime-root)
+      runtime_root="$2"
+      shift 2
+      ;;
+    --label)
+      label="$2"
+      shift 2
+      ;;
+    --out-dir)
+      out_dir="$2"
+      shift 2
+      ;;
+    --timeout)
+      timeout_seconds="$2"
+      shift 2
+      ;;
+    --copy-runtime)
+      copy_runtime=1
+      shift
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      echo "unknown option: $1" >&2
+      usage >&2
+      exit 1
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+build_bin_dir="${1:-$default_build_bin_dir}"
+if [[ $# -gt 0 ]]; then
+  shift
+fi
+
+build_bin_dir="$(realpath -m "$build_bin_dir")"
+
+if [[ -z "$label" ]]; then
+  label="$(date +%Y%m%d-%H%M%S)"
+fi
+
+safe_label="$(sanitize_label "$label")"
+if [[ -z "$safe_label" ]]; then
+  safe_label="capture"
+fi
+
+if [[ -z "$out_dir" ]]; then
+  out_dir="$build_bin_dir/log/pack-profile-runs"
+fi
+out_dir="$(realpath -m "$out_dir")"
+
+if [[ -z "$runtime_root" ]]; then
+  if [[ ! -e "$build_bin_dir/config/locale.cfg" || ! -e "$build_bin_dir/pack" ]]; then
+    if [[ -d "$default_runtime_root" ]]; then
+      runtime_root="$default_runtime_root"
+    fi
+  fi
+fi
+
+if [[ -n "$runtime_root" ]]; then
+  runtime_root="$(realpath "$runtime_root")"
+fi
+
+if [[ ! -x "$run_script" ]]; then
+  echo "headless runner not executable: $run_script" >&2
+  exit 1
+fi
+
+if [[ ! -f "$parser_script" ]]; then
+  echo "pack profile parser not found: $parser_script" >&2
+  exit 1
+fi
+
+if ! command -v python3 >/dev/null 2>&1; then
+  echo "python3 not found in PATH" >&2
+  exit 1
+fi
+
+mkdir -p "$build_bin_dir/log" "$out_dir"
+
+if [[ -n "$runtime_root" ]]; then
+  if [[ ! -x "$stage_script" ]]; then
+    echo "runtime staging script not executable: $stage_script" >&2
+    exit 1
+  fi
+
+  stage_args=()
+  if [[ "$copy_runtime" -eq 1 ]]; then
+    stage_args+=(--copy)
+  fi
+  stage_args+=("$runtime_root" "$build_bin_dir")
+  "$stage_script" "${stage_args[@]}"
+fi
+
+report_path="$build_bin_dir/log/pack_profile.txt"
+raw_out="$out_dir/$safe_label.pack_profile.txt"
+summary_out="$out_dir/$safe_label.summary.txt"
+
+rm -f "$report_path"
+
+set +e
+M2PACK_PROFILE=1 M2_TIMEOUT="$timeout_seconds" "$run_script" "$build_bin_dir" -- "$@"
+run_exit=$?
+set -e
+
+if [[ ! -f "$report_path" ]]; then
+  echo "pack profile report was not generated: $report_path" >&2
+  exit "$run_exit"
+fi
+
+cp "$report_path" "$raw_out"
+python3 "$parser_script" "$raw_out" > "$summary_out"
+
+case "$run_exit" in
+  0|124|137)
+    ;;
+  *)
+    echo "client run exited with $run_exit; archived report anyway:" >&2
+    echo "  raw: $raw_out" >&2
+    echo "  summary: $summary_out" >&2
+    exit "$run_exit"
+    ;;
+esac
+
+echo "captured pack profile:"
+echo "  raw: $raw_out"
+echo "  summary: $summary_out"
diff --git a/scripts/compare-pack-profile-runs.sh b/scripts/compare-pack-profile-runs.sh
new file mode 100755
index 0000000..5ff836f
--- /dev/null
+++ b/scripts/compare-pack-profile-runs.sh
@@ -0,0 +1,176 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  compare-pack-profile-runs.sh [options] [build-bin-dir] [-- <client args...>]
+
+Examples:
+  compare-pack-profile-runs.sh \
+    --left-label pck \
+    --left-runtime-root /srv/client-runtime-pck \
+    --right-label m2p \
+    --right-runtime-root /srv/client-runtime-m2p
+
+  compare-pack-profile-runs.sh \
+    --left-label legacy \
+    --left-runtime-root ../runtime-pck \
+    --right-label secure \
+    --right-runtime-root ../runtime-m2p \
+    ./build-mingw64-lld/bin -- --m2pack-strict-hash 0
+
+Options:
+  --left-runtime-root DIR   Runtime root for the first run
+  --right-runtime-root DIR  Runtime root for the second run
+  --left-label NAME         Label for the first run (default: left)
+  --right-label NAME        Label for the second run (default: right)
+  --out-dir DIR             Directory for archived reports and compare output
+  --timeout SEC             Overrides M2_TIMEOUT for both runs
+  --copy-runtime            Materialize runtime instead of symlinking it
+  -h, --help                Show this help
+
+Behavior:
+  - Runs two captures back-to-back into the same build output
+  - Archives both raw reports and summaries
+  - Writes a combined compare report and prints it to stdout
+EOF
+}
+
+sanitize_label() {
+  printf '%s' "$1" \
+    | tr '[:upper:]' '[:lower:]' \
+    | sed -E 's/[^a-z0-9._-]+/-/g; s/^-+//; s/-+$//; s/-{2,}/-/g'
+}
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(realpath "$script_dir/..")"
+default_build_bin_dir="$repo_root/build-mingw64-lld/bin"
+
+capture_script="${M2_CAPTURE_PACK_PROFILE_SCRIPT:-$script_dir/capture-pack-profile.sh}"
+parser_script="${M2_PACK_PROFILE_PARSER:-$script_dir/pack-profile-report.py}"
+
+left_runtime_root=""
+right_runtime_root=""
+left_label="left"
+right_label="right"
+out_dir=""
+timeout_seconds="${M2_TIMEOUT:-20}"
+copy_runtime=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --left-runtime-root)
+      left_runtime_root="$2"
+      shift 2
+      ;;
+    --right-runtime-root)
+      right_runtime_root="$2"
+      shift 2
+      ;;
+    --left-label)
+      left_label="$2"
+      shift 2
+      ;;
+    --right-label)
+      right_label="$2"
+      shift 2
+      ;;
+    --out-dir)
+      out_dir="$2"
+      shift 2
+      ;;
+    --timeout)
+      timeout_seconds="$2"
+      shift 2
+      ;;
+    --copy-runtime)
+      copy_runtime=1
+      shift
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      echo "unknown option: $1" >&2
+      usage >&2
+      exit 1
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+if [[ -z "$left_runtime_root" || -z "$right_runtime_root" ]]; then
+  echo "both --left-runtime-root and --right-runtime-root are required" >&2
+  usage >&2
+  exit 1
+fi
+
+build_bin_dir="${1:-$default_build_bin_dir}"
+if [[ $# -gt 0 ]]; then
+  shift
+fi
+build_bin_dir="$(realpath -m "$build_bin_dir")"
+
+if [[ -z "$out_dir" ]]; then
+  out_dir="$build_bin_dir/log/pack-profile-runs/$(date +%Y%m%d-%H%M%S)"
+fi
+out_dir="$(realpath -m "$out_dir")"
+mkdir -p "$out_dir"
+
+if [[ ! -x "$capture_script" ]]; then
+  echo "capture script not executable: $capture_script" >&2
+  exit 1
+fi
+
+if [[ ! -f "$parser_script" ]]; then
+  echo "pack profile parser not found: $parser_script" >&2
+  exit 1
+fi
+
+if ! command -v python3 >/dev/null 2>&1; then
+  echo "python3 not found in PATH" >&2
+  exit 1
+fi
+
+capture_common_args=(
+  --out-dir "$out_dir"
+  --timeout "$timeout_seconds"
+)
+if [[ "$copy_runtime" -eq 1 ]]; then
+  capture_common_args+=(--copy-runtime)
+fi
+
+"$capture_script" \
+  "${capture_common_args[@]}" \
+  --runtime-root "$left_runtime_root" \
+  --label "$left_label" \
+  "$build_bin_dir" \
+  -- "$@"
+
+"$capture_script" \
+  "${capture_common_args[@]}" \
+  --runtime-root "$right_runtime_root" \
+  --label "$right_label" \
+  "$build_bin_dir" \
+  -- "$@"
+
+left_safe_label="$(sanitize_label "$left_label")"
+right_safe_label="$(sanitize_label "$right_label")"
+left_report="$out_dir/$left_safe_label.pack_profile.txt"
+right_report="$out_dir/$right_safe_label.pack_profile.txt"
+compare_path="$out_dir/compare-$left_safe_label-vs-$right_safe_label.txt"
+
+python3 "$parser_script" \
+  "$left_label=$left_report" \
+  "$right_label=$right_report" | tee "$compare_path"
+
+echo
+echo "saved compare report: $compare_path"