When exporting a table to an image, there is a small issue with handling the style of merged row headers.

[shalousun]

Below is my original HTML table.

Then, I use the following code to export the table to an image:

document.getElementById("download-button").addEventListener("click", function () {
    const table = document.getElementById("summary-table");
    html2canvas(table).then(function (canvas) {
      // Convert the canvas to an image and save it
      const img = canvas.toDataURL("image/png");
      const a = document.createElement('a');
      a.href = img;
      a.download = "summary-report.png"; // Set the download file name
      a.click();
    });
});

The exported image is displayed as follows:

[learner-dhx]

Below is my original HTML table.

Then, I use the following code to export the table to an image:

document.getElementById("download-button").addEventListener("click", function () {
const table = document.getElementById("summary-table");
html2canvas(table).then(function (canvas) {
// Convert the canvas to an image and save it
const img = canvas.toDataURL("image/png");
const a = document.createElement('a');
a.href = img;
a.download = "summary-report.png"; // Set the download file name
a.click();
});
});
The exported image is displayed as follows:

try to use this REPO fix all 🐞：https://github.com/qq15725/modern-screenshot