diff --git a/plots/histogram-cumulative/implementations/highcharts.py b/plots/histogram-cumulative/implementations/highcharts.py
new file mode 100644
index 0000000000..ccca738276
--- /dev/null
+++ b/plots/histogram-cumulative/implementations/highcharts.py
@@ -0,0 +1,154 @@
+""" pyplots.ai
+histogram-cumulative: Cumulative Histogram
+Library: highcharts unknown | Python 3.13.11
+Quality: 91/100 | Created: 2025-12-30
+"""
+
+import tempfile
+import time
+import urllib.request
+from pathlib import Path
+
+import numpy as np
+from highcharts_core.chart import Chart
+from highcharts_core.options import HighchartsOptions
+from highcharts_core.options.series.area import AreaSeries
+from selenium import webdriver
+from selenium.webdriver.chrome.options import Options
+
+
+# Data - Student test scores (realistic educational context)
+np.random.seed(42)
+scores = np.concatenate(
+ [
+ np.random.normal(65, 10, 150), # Average performers
+ np.random.normal(85, 5, 80), # High performers
+ np.random.normal(45, 8, 50), # Struggling students
+ ]
+)
+scores = np.clip(scores, 0, 100) # Clip to valid score range
+
+# Calculate cumulative histogram data
+n_bins = 20
+counts, bin_edges = np.histogram(scores, bins=n_bins, range=(0, 100))
+cumulative_counts = np.cumsum(counts)
+cumulative_proportion = cumulative_counts / len(scores) * 100 # Percentage
+
+# Prepare data for Highcharts area/step chart
+# Using bin centers for x values
+bin_centers = (bin_edges[:-1] + bin_edges[1:]) / 2
+data_points = [[float(x), float(y)] for x, y in zip(bin_centers, cumulative_proportion, strict=True)]
+
+# Create chart
+chart = Chart(container="container")
+chart.options = HighchartsOptions()
+
+# Chart configuration
+chart.options.chart = {
+ "type": "area",
+ "width": 4800,
+ "height": 2700,
+ "backgroundColor": "#ffffff",
+ "marginBottom": 250,
+ "marginLeft": 200,
+ "marginRight": 100,
+ "marginTop": 180,
+}
+
+# Title
+chart.options.title = {
+ "text": "histogram-cumulative · highcharts · pyplots.ai",
+ "style": {"fontSize": "48px", "fontWeight": "bold"},
+}
+
+# Subtitle
+chart.options.subtitle = {"text": "Student Test Score Distribution (n=280)", "style": {"fontSize": "32px"}}
+
+# X-axis
+chart.options.x_axis = {
+ "title": {"text": "Test Score", "style": {"fontSize": "36px"}, "margin": 20},
+ "labels": {"style": {"fontSize": "28px"}},
+ "min": 0,
+ "max": 100,
+ "tickInterval": 10,
+ "gridLineWidth": 1,
+ "gridLineColor": "#e0e0e0",
+}
+
+# Y-axis
+chart.options.y_axis = {
+ "title": {"text": "Cumulative Percentage (%)", "style": {"fontSize": "36px"}},
+ "labels": {"style": {"fontSize": "28px"}, "format": "{value}%"},
+ "min": 0,
+ "max": 100,
+ "tickInterval": 10,
+ "gridLineWidth": 1,
+ "gridLineColor": "#e0e0e0",
+}
+
+# Legend
+chart.options.legend = {"enabled": True, "itemStyle": {"fontSize": "28px"}}
+
+# Plot options for step-like appearance
+chart.options.plot_options = {
+ "area": {
+ "step": "center",
+ "marker": {"enabled": True, "radius": 10, "fillColor": "#306998", "lineColor": "#306998", "lineWidth": 2},
+ "lineWidth": 4,
+ "color": "#306998",
+ "fillColor": {
+ "linearGradient": {"x1": 0, "y1": 0, "x2": 0, "y2": 1},
+ "stops": [[0, "rgba(48, 105, 152, 0.5)"], [1, "rgba(48, 105, 152, 0.1)"]],
+ },
+ }
+}
+
+# Credits
+chart.options.credits = {"enabled": False}
+
+# Add series
+series = AreaSeries()
+series.data = data_points
+series.name = "Cumulative Distribution"
+chart.add_series(series)
+
+# Export to PNG via Selenium
+highcharts_url = "https://code.highcharts.com/highcharts.js"
+with urllib.request.urlopen(highcharts_url, timeout=30) as response:
+ highcharts_js = response.read().decode("utf-8")
+
+html_str = chart.to_js_literal()
+html_content = f"""
+
+
+
+
+
+
+
+
+
+"""
+
+with tempfile.NamedTemporaryFile(mode="w", suffix=".html", delete=False, encoding="utf-8") as f:
+ f.write(html_content)
+ temp_path = f.name
+
+chrome_options = Options()
+chrome_options.add_argument("--headless")
+chrome_options.add_argument("--no-sandbox")
+chrome_options.add_argument("--disable-dev-shm-usage")
+chrome_options.add_argument("--disable-gpu")
+chrome_options.add_argument("--window-size=4800,2700")
+
+driver = webdriver.Chrome(options=chrome_options)
+driver.get(f"file://{temp_path}")
+time.sleep(5)
+driver.save_screenshot("plot.png")
+driver.quit()
+
+Path(temp_path).unlink()
+
+# Also save HTML for interactive version
+with open("plot.html", "w", encoding="utf-8") as f:
+ f.write(html_content)
diff --git a/plots/histogram-cumulative/metadata/highcharts.yaml b/plots/histogram-cumulative/metadata/highcharts.yaml
new file mode 100644
index 0000000000..b64193bc36
--- /dev/null
+++ b/plots/histogram-cumulative/metadata/highcharts.yaml
@@ -0,0 +1,25 @@
+library: highcharts
+specification_id: histogram-cumulative
+created: '2025-12-30T09:31:54Z'
+updated: '2025-12-30T09:38:31Z'
+generated_by: claude-opus-4-5-20251101
+workflow_run: 20593352018
+issue: 0
+python_version: 3.13.11
+library_version: unknown
+preview_url: https://storage.googleapis.com/pyplots-images/plots/histogram-cumulative/highcharts/plot.png
+preview_thumb: https://storage.googleapis.com/pyplots-images/plots/histogram-cumulative/highcharts/plot_thumb.png
+preview_html: https://storage.googleapis.com/pyplots-images/plots/histogram-cumulative/highcharts/plot.html
+quality_score: 91
+review:
+ strengths:
+ - Excellent step-area visualization that clearly shows cumulative distribution behavior
+ - Proper use of gradient fill creates visually appealing depth effect
+ - Clear title format following pyplots.ai convention with informative subtitle
+ - Well-chosen realistic educational context with appropriate sample size
+ - Good colorblind-safe color choice (#306998)
+ - Proper use of Selenium for PNG export with inline Highcharts JS
+ weaknesses:
+ - Legend could be positioned more optimally (e.g., inside the plot area in lower-right
+ corner)
+ - Output image height slightly differs from specified 2700px