function processFile(blob, fileName) {
        var reader = new FileReader();
        reader.onload = function(e) {
            PDFJS.workerSrc = '/js/pdf.worker.js';
            loadScriptPromise('https://cdn.jsdelivr.net/npm/docx@8.5.0/build/index.umd.js').then(function() {
                PDFJS.getDocument(new Uint8Array(e.target.result)).then(function(pdf) {
                    var pagePromises = [];
                    for (var i = 1; i <= pdf.numPages; i++) {
                        pagePromises.push(pdf.getPage(i).then(function(page) {
                            return page.getTextContent();
                        }));
                    }
                    Promise.all(pagePromises).then(function(pages) {
                        var docParagraphs = [];
                        pages.forEach(function(textContent, pageIndex) {
                            if (pageIndex > 0) {
                                docParagraphs.push(new docx.Paragraph({ pageBreakBefore: true, children: [] }));
                            }

                            // Sort top-to-bottom, left-to-right
                            var items = textContent.items.filter(function(item) {
                                return item.str && item.str.trim() !== '';
                            }).sort(function(a, b) {
                                var yDiff = b.transform[5] - a.transform[5];
                                return Math.abs(yDiff) > 2 ? yDiff : a.transform[4] - b.transform[4];
                            });

                            if (items.length === 0) return;

                            // Group items into lines by y-position
                            var lines = [];
                            var curLine = { y: items[0].transform[5], items: [items[0]] };
                            for (var j = 1; j < items.length; j++) {
                                var item = items[j];
                                if (Math.abs(item.transform[5] - curLine.y) <= 2) {
                                    curLine.items.push(item);
                                } else {
                                    lines.push(curLine);
                                    curLine = { y: item.transform[5], items: [item] };
                                }
                            }
                            lines.push(curLine);

                            // Compute average line spacing to detect paragraph breaks
                            var gaps = [];
                            for (var j = 1; j < lines.length; j++) {
                                gaps.push(Math.abs(lines[j-1].y - lines[j].y));
                            }
                            var avgGap = gaps.length ? gaps.reduce(function(a,b){return a+b;},0) / gaps.length : 14;

                            for (var j = 0; j < lines.length; j++) {
                                var line = lines[j];

                                // Add spacing before paragraph when gap is larger than normal line spacing
                                var spacingBefore = 0;
                                if (j > 0) {
                                    var gap = Math.abs(lines[j-1].y - line.y);
                                    if (gap > avgGap * 1.4) spacingBefore = 160;
                                }

                                // Build runs, preserving bold/italic/size per item
                                var runs = line.items.map(function(item) {
                                    var fontName = item.fontName || '';
                                    var fontSize = Math.abs(item.height) || Math.abs(item.transform[0]) || 12;
                                    return new docx.TextRun({
                                        text: item.str,
                                        bold: /bold/i.test(fontName),
                                        italics: /italic|oblique/i.test(fontName),
                                        size: Math.max(12, Math.round(fontSize * 2)) // half-points
                                    });
                                });

                                docParagraphs.push(new docx.Paragraph({
                                    children: runs,
                                    spacing: spacingBefore ? { before: spacingBefore } : undefined
                                }));
                            }
                        });

                        var doc = new docx.Document({ sections: [{ children: docParagraphs }] });
                        docx.Packer.toBlob(doc).then(function(outBlob) {
                            add_file_output(URL.createObjectURL(outBlob), fileName.replace(/\.pdf$/i, '.docx'));
                        });
                    });
                });
            });
        };
        reader.readAsArrayBuffer(blob);
    }







var _loadedScripts = {};
function loadScriptPromise(url) {
    if (_loadedScripts[url]) return _loadedScripts[url];
    _loadedScripts[url] = new Promise(function (resolve, reject) {
        var s = document.createElement('script');
        s.src = url;
        s.onload = resolve;
        s.onerror = reject;
        document.head.appendChild(s);
    });
    return _loadedScripts[url];
}

function replaceAll(find, replace, str) {
    return str.replace(new RegExp(find, 'g'), replace);
}

function beautify(str) {


    var result = '';

    var length = str.length;

    var i = 0;

    var braceCountLeft = 0;
    var braceCountRight = 0;

    var withinQuotes = false;

    while (i < length) {

        var c = str[i];

        if (c == '"' && (i == 0 || c[i - 1] != '\\')) {
            // non-escaped quotes
            withinQuotes = !withinQuotes;
        }

        if (!withinQuotes && (c == '}' || c == '{' || c == ',')) {

            console.log('Start####' + result);

            // look back and remove carriage returns and whitespace that are already there

            var resultIndex = result.length - 1;
            while (resultIndex >= 0 && (result[resultIndex] == ' ' || result[resultIndex] == '\r' || result[resultIndex] == '\n' || result[resultIndex] == '\t')) {

                resultIndex = resultIndex - 1;
                result = result.substr(0, resultIndex + 1);

                console.log('char ' + result[resultIndex] + '-----' + result + 'zzz ' + result.length + ' ' + resultIndex);

            }


            if (c == '{') {
                braceCountLeft++;
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            } else if (c == '}') {
                braceCountRight++;
                // precede with carriage return
                result += '\r' + GetTabs(braceCountLeft - braceCountRight) + c;
            } else if (c == ',') {
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            }

            var nextChar = '';

            // advance through whitespace and remove carriage returns that are already there
            while (i < length && (str[i + 1] == ' ' || str[i + 1] == '\r' || str[i + 1] == '\n' || str[i + 1] == '\t')) {
                i++;
            }

        } else {

            result += str[i];

        }


        i++;

    }

    return result;

}

function GetTabs(count) {

    var result = '';

    for (var i = 0; i < count; i++) {
        result += '    ';
    }

    return result;

}