Here's a slightly different take on the previous script, this one leverages colour range to load all pure black pixels as a selection and then compares the selection width to the document width. If both match, then the file is logged as possibly containing a black row. As with the previous code, this isn't perfect and there may be cases where false positives are flagged.
/*
Log Files With Black Full Width Line to Text File Slower.jsx
Stephen Marsh
v1.0 - 8th March 2025
https://community.adobe.com/t5/photoshop-ecosystem-discussions/black-horizontal-line-across-the-image-after-save-to-tif/m-p/15195817
*/
#target photoshop
// Open dialog to select files
var theFiles = File.openDialog("Select files to check for full width 0r0g0b pixels", true);
if (theFiles) {
processFiles(theFiles);
} else {
alert("No files selected.");
}
// Function to check histogram for 0r0g0b
function checkHistogramForBlack(doc) {
var histo = doc.histogram;
return histo[0] > 0;
}
function selectColorRange(fuzziness, luminance, a, b, luminance2, a2, b2, colorModel) {
var s2t = function (s) {
return app.stringIDToTypeID(s);
};
var descriptor = new ActionDescriptor();
var descriptor2 = new ActionDescriptor();
var descriptor3 = new ActionDescriptor();
descriptor.putInteger(s2t("fuzziness"), fuzziness);
descriptor2.putDouble(s2t("luminance"), luminance);
descriptor2.putDouble(s2t("a"), a);
descriptor2.putDouble(s2t("b"), b);
descriptor.putObject(s2t("minimum"), s2t("labColor"), descriptor2);
descriptor3.putDouble(s2t("luminance"), luminance2);
descriptor3.putDouble(s2t("a"), a2);
descriptor3.putDouble(s2t("b"), b2);
descriptor.putObject(s2t("maximum"), s2t("labColor"), descriptor3);
descriptor.putInteger(s2t("colorModel"), colorModel);
executeAction(s2t("colorRange"), descriptor, DialogModes.NO);
}
function processFiles(theFiles) {
var resultFile = new File(Folder.desktop + "/BlackPixelsCheckResults.txt");
resultFile.open("w");
resultFile.writeln("Files possibly containing full width 0r0g0b pixels:\n");
// Counter for files with 0r0g0b pixels
var blackFilesCount = 0;
// Loop through files
for (var i = 0; i < theFiles.length; i++) {
var theFile = theFiles[i];
var doc = app.open(theFile);
selectColorRange(0, 0, 0, 0, 0, 0, 0, 0);
var selectionBounds = activeDocument.selection.bounds;
var selectionWidth = selectionBounds[2].as("px") - selectionBounds[0].as("px");
if (app.activeDocument.width.as("px") === selectionWidth) {
resultFile.writeln(theFile.fsName);
blackFilesCount++; // Increment counter when 0r0g0b pixels are found
}
doc.close(SaveOptions.DONOTSAVECHANGES);
}
// End of script notification
resultFile.close();
alert("Processing complete!\n" + "Total files checked: " + theFiles.length + "\n" +
"Files with possible full width black pixels: " + blackFilesCount + "\n" +
"Results saved to: " + resultFile.fsName);
resultFile.execute();
}
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