{"id":76013,"date":"2026-03-13T00:27:23","date_gmt":"2026-03-13T00:27:23","guid":{"rendered":"https:\/\/aceworldpgs.com\/?page_id=76013"},"modified":"2026-03-14T19:19:51","modified_gmt":"2026-03-14T19:19:51","slug":"bulk-isbn-validator","status":"publish","type":"post","link":"https:\/\/aceworldpgs.com\/tools\/bulk-isbn-validator\/","title":{"rendered":"Bulk ISBN Validator"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"WebApplication\",\n  \"name\": \"ACEworld Pro Bulk ISBN Validator & Catalog Auditor\",\n  \"url\": \"https:\/\/aceworldpgs.com\/tools\/bulk-isbn-validator\/\",\n  \"description\": \"A professional bulk ISBN validation tool that allows publishers, libraries, and distributors to validate large batches of ISBN-10 and ISBN-13 numbers. Check checksums, identify publisher groups and registration regions, convert ISBN-10 to ISBN-13 in bulk, and export validation reports for catalog auditing.\",\n  \"applicationCategory\": \"BusinessApplication\",\n  \"operatingSystem\": \"All\",\n  \"browserRequirements\": \"Requires JavaScript\",\n  \"creator\": {\n    \"@type\": \"Organization\",\n    \"name\": \"ACEworld Publishing Services\",\n    \"url\": \"https:\/\/aceworldpgs.com\"\n  },\n  \"featureList\": [\n    \"Bulk ISBN checksum validation\",\n    \"Validate multiple ISBN-10 and ISBN-13 numbers simultaneously\",\n    \"Batch ISBN-10 to ISBN-13 conversion\",\n    \"Identify publisher groups and registration regions\",\n    \"Export validation reports to CSV for catalog audits\"\n  ],\n  \"keywords\": [\n    \"bulk ISBN validator\",\n    \"ISBN batch validation tool\",\n    \"publisher catalog ISBN checker\",\n    \"bulk ISBN verification\",\n    \"ISBN catalog auditing tool\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"0\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\"\n  },\n  \"aggregateRating\": {\n    \"@type\": \"AggregateRating\",\n    \"ratingValue\": \"5.0\",\n    \"reviewCount\": \"85\"\n  }\n}\n<\/script>\n\n\n\n<p class=\"has-text-align-center\"><div class='code-block code-block-24' style='margin: 8px 0; clear: both;'>\n<style>\n    :root { \n        --primary: #007bff; --success: #28a745; --dark: #333; \n        --light: #f8f9fa; --border: #ddd;\n    }\n    .card { \n        background: white; border-radius: 16px; padding: 25px; \n        box-shadow: 0 10px 30px rgba(0,0,0,0.05); max-width: 900px; margin: 20px auto;\n        font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    }\n    .global-badge {\n        background: #fff9db; color: #856404; padding: 10px 15px; border-radius: 8px;\n        font-size: 13px; font-weight: bold; display: block; margin-bottom: 20px;\n        border: 1px solid #ffeeba; text-align: center;\n    }\n    .verify-grid { display: flex; gap: 10px; margin-bottom: 20px; }\n    .btn-main { \n        flex: 1; background: #000; color: white; padding: 16px; font-size: 16px; \n        border: none; border-radius: 10px; font-weight: 600; cursor: pointer; transition: 0.2s;\n    }\n    .btn-main:hover { opacity: 0.8; }\n    #downloadBtn { \n        flex: 1; background: var(--success); color: white; border: none; \n        border-radius: 10px; font-weight: 600; cursor: pointer; display: none; align-items: center; justify-content: center;\n    }\n    table { width: 100%; border-collapse: collapse; margin-top: 20px; }\n    th { background: #f8f9fa; padding: 12px; border-bottom: 2px solid #dee2e6; text-align: left; }\n    td { padding: 12px; border-bottom: 1px solid #eee; }\n    .status-badge { padding: 4px 8px; border-radius: 4px; font-size: 11px; font-weight: bold; }\n    \n    @media (max-width: 550px) {\n        .verify-grid { flex-direction: column; }\n    }\n<\/style>\n\n<!--\n<div id=\"globalCounterDisplay\" class=\"global-badge\">More about the ISBN Validaor? <a href=\"javascript:void(0)\" onclick=\"loadTool(event, 'how-it-works'); document.getElementById('bulkisbnhow').scrollIntoView({behavior:'smooth'});\">Click here<\/a><\/div>\n-->\n\n<div class=\"card\">\n\n\n    <div id=\"globalBadge\" class=\"global-badge\">\n        \u2b50 PRO FEATURES: Bulk Validation, Catalog Export\n    <\/div>\n    \n    <div style=\"text-align: right; margin-bottom: 15px;\">\n    <a href=\"https:\/\/aceworldpgs.com\/acepublishingchecklist\"  style=\"text-decoration:none; font-size:12px; font-weight:bold; color:#007bff; display:inline-flex; align-items:center; gap:5px;\">\n        <span>Download Publishing Checklist <\/span> \n        <span style=\"background:#ffd700; color:#000; padding:2px 6px; border-radius:4px; font-size:10px;\"> \u2b07\ufe0f<\/span>\n    <\/a>\n<\/div>\n\n    <div style=\"text-align: left; margin-bottom: 15px;\">\n       <a href=\"https:\/\/aceworldpgs.com\/tools\/isbn-validator\/\" style=\"text-decoration:none; font-size:12px; color:var(--primary);\">\u2190 Back to Single Validator<\/a>\n    <\/div>\n\n    <p style=\"font-size:14px; color:#666; margin-bottom:10px; font-weight: bold;\">\n        Enter ISBN List:\n    <\/p>\n    <textarea id=\"bulkInput\" rows=\"8\" \n        style=\"width:100%; padding:15px; border-radius:12px; border:2px solid #ddd; font-family:monospace; margin-bottom:15px; box-sizing: border-box;\" \n        placeholder=\"9789785890525&#10;9780141036144&#10;9783161484100\"><\/textarea>\n\n   <!-- <div class=\"verify-grid\">\n        <button onclick=\"processBulk()\" class=\"btn-main\">Validate Catalog<\/button>\n        <button id=\"downloadBtn\" onclick=\"exportToCSV()\">Download CSV Report<\/button>\n    <\/div>\n    -->\n    \n     <div class=\"verify-grid\">\n        <button onclick=\"trackTool('bulk_isbn_validator'); processBulk()\" class=\"btn-main\">Validate Catalog<\/button>\n        <button id=\"downloadBtn\" onclick=\"trackTool('isbn_report_export'); exportToCSV()\">Download CSV Report<\/button>\n    <\/div>\n\n    <div id=\"paywallModal\" style=\"display:none; position:fixed; z-index:9999; left:0; top:0; width:100%; height:100%; background:rgba(0,0,0,0.7); align-items:center; justify-content:center;\">\n        <div style=\"background:white; padding:35px; border-radius:15px; max-width:420px; width:90%; text-align:center; position:relative; box-shadow: 0 10px 25px rgba(0,0,0,0.2); font-family: sans-serif;\">\n            <span onclick=\"closePaywall()\" style=\"position:absolute; right:15px; top:10px; cursor:pointer; font-size:28px; color:#999;\">&times;<\/span>\n            \n            <div style=\"font-size:40px; margin-bottom:10px;\">\ud83d\udc8e<\/div>\n            <h2 id=\"modalTitle\" style=\"margin-top:0; font-size:22px;\">Pro CSV Export<\/h2>\n            <p id=\"modalDesc\" style=\"color:#666; font-size:14px; margin-bottom:20px;\">Batch processing requires a Pro Access Key.<\/p>\n            \n            <a href=\"https:\/\/paystack.com\/pay\/aceworldp\" target=\"_blank\" style=\"display:block; background:#00BBFF; color:white; padding:14px; text-decoration:none; border-radius:8px; font-weight:bold; margin-bottom:25px;\" rel=\"noopener\">Get Access Key via Paystack<\/a>\n            \n            <hr style=\"border:0; border-top:1px solid #eee; margin-bottom:20px;\">\n\n            <p style=\"font-size:13px; font-weight:bold; margin-bottom:8px; text-align:left; color:#333;\">Already have a key?<\/p>\n            <div style=\"display:flex; gap:8px;\">\n                <input type=\"text\" id=\"proKeyInput\" placeholder=\"Enter Key Here...\" style=\"flex:2; padding:12px; border:2px solid #ddd; border-radius:8px; outline:none;\">\n                <button onclick=\"verifyAndUnlock()\" style=\"flex:1; background:#000; color:#fff; border:none; border-radius:8px; font-weight:bold; cursor:pointer;\">Unlock<\/button>\n            <\/div>\n            <p id=\"keyError\" style=\"color:red; font-size:12px; margin-top:8px; display:none;\">Invalid Access Key. Please try again.<\/p>\n        <\/div>\n    <\/div>\n\n    <div id=\"tableWrapper\" style=\"overflow-x:auto; display:none;\">\n        <table>\n            <thead>\n                <tr>\n                    <th>ISBN<\/th>\n                    <th>Status<\/th>\n                    <th>Region\/Publisher<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody id=\"bulkTableBody\"><\/tbody>\n        <\/table>\n    <\/div>\n<\/div>\n\n<div class='code-block code-block-39' style='margin: 8px auto; text-align: center; display: block; clear: both;'>\n<style>\n\n\/* SHARE SECTION *\/\n\n.share-section{\ntext-align:center;\npadding:28px 0;\nmargin-top:30px;\nborder-top:1px solid #e5e7eb;\n}\n\n\/* COPY LINK BUTTON *\/\n\n.copy-link-btn{\ndisplay:inline-flex;\nalign-items:center;\ngap:6px;\nfont-size:14px;\nfont-weight:600;\ncolor:var(--text-main);\nbackground:#f8fafc;\npadding:6px 12px;\nborder-radius:6px;\ntext-decoration:none;\ncursor:pointer;\ntransition:all .2s ease;\nmargin-bottom:18px;\n}\n\n.copy-link-btn:hover{\nbackground:#eef2f7;\ntransform:translateY(-1px);\n}\n\n\/* SHARE BUTTON ROW *\/\n\n.share-btns{\ndisplay:flex;\njustify-content:center;\ngap:12px;\nflex-wrap:wrap;\n}\n\n\/* SHARE ICON *\/\n\n.share-icon{\nwidth:36px;\nheight:36px;\nborder-radius:50%;\ndisplay:flex;\nalign-items:center;\njustify-content:center;\ncolor:#fff;\nfont-size:14px;\nfont-weight:600;\ntext-decoration:none;\ntransition:all .2s ease;\n}\n\n\/* BRAND COLORS *\/\n\n.wa{background:#25D366;}\n.tw{background:#000;}\n.li{background:#0A66C2;}\n.fb{background:#1877F2;}\n.ml{background:#ef4444;}\n\n\/* HOVER EFFECT *\/\n\n.share-icon:hover{\ntransform:translateY(-2px) scale(1.05);\nopacity:.9;\n}\n\n\/* COPY FEEDBACK *\/\n\n.copy-feedback{\nfont-size:12px;\ncolor:#16a34a;\nmargin-top:10px;\ndisplay:none;\n}\n\n<\/style>\n\n\n<div class=\"share-section\">\n\n<a onclick=\"copyToolLink()\" class=\"copy-link-btn\" id=\"copyBtn\">\n\ud83d\udd17 Copy Page Link\n<\/a>\n\n<div class=\"share-btns\">\n<a href=\"#\" id=\"shareWA\" target=\"_blank\" class=\"share-icon wa\" title=\"Share on WhatsApp\">W<\/a>\n<a href=\"#\" id=\"shareTW\" target=\"_blank\" class=\"share-icon tw\" title=\"Share on X\">X<\/a>\n<a href=\"#\" id=\"shareLI\" target=\"_blank\" class=\"share-icon li\" title=\"Share on LinkedIn\">in<\/a>\n<a href=\"#\" id=\"shareFB\" target=\"_blank\" class=\"share-icon fb\" title=\"Share on Facebook\">f<\/a>\n<a href=\"#\" id=\"shareEmail\" target=\"_blank\" class=\"share-icon ml\" title=\"Share via Email\">M<\/a>\n<\/div>\n\n<div id=\"copyFeedback\" class=\"copy-feedback\">Link copied!<\/div>\n\n<\/div>\n\n\n<script>\n\nfunction copyToolLink(){\n\nconst url = window.location.href;\n\nnavigator.clipboard.writeText(url).then(()=>{\n\nconst f = document.getElementById(\"copyFeedback\");\n\nf.style.display=\"block\";\n\nsetTimeout(()=>{f.style.display=\"none\"},2000);\n\n}).catch(()=>{\n\nalert(\"Copy failed. Please copy the URL manually.\");\n\n});\n\n}\n\nfunction setupShareButtons(){\n\nlet pageUrl=encodeURIComponent(window.location.href)\nlet pageTitle=encodeURIComponent(document.title)\n\ndocument.getElementById(\"shareWA\").href=\n`https:\/\/wa.me\/?text=${pageTitle}%20${pageUrl}`\n\ndocument.getElementById(\"shareTW\").href=\n`https:\/\/twitter.com\/intent\/tweet?text=${pageTitle}&url=${pageUrl}`\n\ndocument.getElementById(\"shareLI\").href=\n`https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=${pageUrl}`\n\ndocument.getElementById(\"shareFB\").href=\n`https:\/\/www.facebook.com\/sharer\/sharer.php?u=${pageUrl}`\n\ndocument.getElementById(\"shareEmail\").href=\n\"mailto:?subject=\"+encodeURIComponent(document.title)+\n\"&body=\"+encodeURIComponent(\"Check out this page: \"+window.location.href)\n\n}\n\nsetupShareButtons()\n\n<\/script><\/div>\n\n\n<div class='code-block code-block-40' style='margin: 8px 0; clear: both;'>\n<style>\n\n\/* SIMILAR TOOLS *\/\n\n.similar-tools{\nmargin-top:40px;\npadding-top:20px;\nborder-top:1px solid #e5e7eb;\n}\n\n.similar-tools h3{\nfont-size:18px;\nfont-weight:700;\nmargin-bottom:16px;\n}\n\n.similar-grid{\ndisplay:grid;\ngrid-template-columns:repeat(3,1fr);\ngap:12px;\nmargin-top: 15px;\nmargin-bottom: 15px;\nmargin-left: 20px;\nmargin-right: 20px;\n}\n\n.similar-card{\ndisplay:flex;\nalign-items:center;\ngap:10px;\npadding:12px;\nborder:1px solid #e5e7eb;\nborder-radius:8px;\ntext-decoration:none;\ncolor:inherit;\nbackground:#fff;\ntransition:all .15s ease;\n}\n\n.similar-card:hover{\nborder-color:#cbd5e1;\nbackground:#f8fafc;\ntransform:translateY(-2px);\n}\n\n\/* icon *\/\n\n.similar-icon{\nwidth:32px;\nheight:32px;\nborder-radius:6px;\nbackground:#eff6ff;\ndisplay:flex;\nalign-items:center;\njustify-content:center;\nfont-size:16px;\nflex-shrink:0;\n}\n\n\/* text *\/\n\n.similar-title{\nfont-size:14px;\nfont-weight:600;\nline-height:1.2;\n}\n\n@media(max-width:700px){\n.similar-grid{\ngrid-template-columns:1fr;\n}\n}\n\n.browse-tools-btn{\n    display:inline-block;\n    padding:10px 18px;\n    border-radius:8px;\n    border:1px solid #e5e7eb;\n    background:#fff;\n    text-decoration:none;\n    font-size:16px;\n    font-weight:600;\n    color:inherit;\n    transition:all .15s ease;\n}\n\n.browse-tools-btn:hover{\n    background:#f8fafc;\n    border-color:#d1d5db;\n    transform:translateY(-1px);\n}\n\n<\/style>\n\n\n<div class=\"similar-tools\">\n\n<h2 style=\"text-align: center;\">Other tools<\/h2>\n\n<div class=\"similar-grid\">\n\n<a href=\"\/tools\/publishing-calculator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Publishing Calculator<\/div>\n<\/a>\n\n<a href=\"\/tools\/isbn-validator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">ISBN Validator<\/div>\n<\/a>\n\n<a href=\"\/tools\/bulk-isbn-validator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Bulk ISBN Validator<\/div>\n<\/a>\n\n<a href=\"\/tools\/book-cover-calculator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Book Cover Calculator<\/div>\n<\/a>\n\n<a href=\"\/tools\/book-metadata-generator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Book Metadata Generator<\/div>\n<\/a>\n\n<a href=\"\/tools\/advert-policy-checks\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Meta Ad Policy Checker<\/div>\n<\/a>\n\n<a href=\"\/tools\/barcode-qr-code-generator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Barcode & QR Code Generator<\/div>\n<\/a>\n\n<a href=\"\/tools\/book-royalty-calculator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Book Royalty Calculator<\/div>\n<\/a>\n\n<a href=\"\/tools\/book-price-calculator\/\" class=\"similar-card\">\n<div class=\"similar-icon\">#<\/div>\n<div class=\"similar-title\">Book Price Calculator<\/div>\n<\/a>\n\n<\/div>\n\n<p style=\"text-align:center;\"><a href=\"https:\/\/aceworldpgs.com\/tools\/all\/\" class=\"browse-tools-btn\">Browse All Tools \u2192<\/a>\n<\/p>\n\n<\/div><\/div>\n\n\n<script>\nlet bulkData = []; \nconst PRO_ACCESS_KEY = \"ISBNV2026\"; \nconst FREE_LIMIT = 3; \n\nfunction isPro() {\n    return localStorage.getItem('isbn_pro_key') === PRO_ACCESS_KEY;\n}\n\nfunction updateToProUI() {\n    const badge = document.getElementById('globalBadge');\n    if(badge) {\n        badge.innerHTML = \"\u2705 PRO ACCESS ACTIVE\";\n        badge.style.background = \"#e6fffa\";\n        badge.style.color = \"#2f855a\";\n        badge.style.borderColor = \"#b2f5ea\";\n    }\n}\n\nwindow.onload = function() {\n    if (isPro()) {\n        updateToProUI();\n    }\n};\n\nfunction validateSingleIsbn(isbn) {\n    let clean = isbn.replace(\/-\/g, \"\").trim();\n    if (clean.length === 10) {\n        let tempIsbn = \"978\" + clean.substring(0, 9);\n        let sum = 0;\n        for (let i = 0; i < 12; i++) sum += (i % 2 === 0) ? parseInt(tempIsbn[i]) : parseInt(tempIsbn[i]) * 3;\n        let checkDigit = (10 - (sum % 10)) % 10;\n        clean = tempIsbn + checkDigit;\n    }\n    if (clean.length !== 13 || !\/^\\d+$\/.test(clean)) return { valid: false, clean };\n    let sum = 0;\n    for (let i = 0; i < 12; i++) sum += (i % 2 === 0) ? parseInt(clean[i]) : parseInt(clean[i]) * 3;\n    const checkDigit = (10 - (sum % 10)) % 10;\n    return { valid: checkDigit === parseInt(clean[12]), clean };\n}\n\nfunction getRegion(isbn) {\n    if (isbn.startsWith('978978')) return \"Nigeria\";\n    const core = isbn.substring(3);\n    if (core.startsWith('0') || core.startsWith('1')) return \"English (USA\/UK)\";\n    if (core.startsWith('2')) return \"French\";\n    if (core.startsWith('3')) return \"German\";\n    if (core.startsWith('4')) return \"Japanese\";\n    return \"International\";\n}\n\nasync function logBulkSummaryToWordPress(validCount, totalCount) {\n    let geo = { country: \"Unknown\", city: \"Unknown\" };\n    try {\n        const res = await fetch('https:\/\/ipapi.co\/json\/');\n        const data = await res.json();\n        geo.country = data.country_name || \"Unknown\";\n        geo.city = data.city || \"Unknown\";\n    } catch (e) { console.warn(\"Geo-logging failed.\"); }\n\n    const fd = new FormData();\n    fd.append('action', 'save_isbn_usage');\n    fd.append('isbn', `${validCount} Valid \/ ${totalCount} Total`); \n    fd.append('isbn_origin', 'Bulk Audit'); \n    fd.append('country', geo.country);\n    fd.append('city', geo.city);\n\n    fetch('\/wp-admin\/admin-ajax.php', { method: 'POST', body: fd });\n}\n\nasync function processBulk() {\n    const text = document.getElementById(\"bulkInput\").value;\n    const lines = text.split(\/\\r?\\n\/).filter(line => line.trim() !== \"\");\n    if (lines.length === 0) return;\n\n    if (lines.length > FREE_LIMIT && !isPro()) {\n        document.getElementById('modalTitle').innerText = \"Bulk Limit Reached\";\n        document.getElementById('modalDesc').innerText = `Free users can only validate up to ${FREE_LIMIT} ISBNs. Upgrade to Pro to audit your entire catalog.`;\n        document.getElementById('paywallModal').style.display = 'flex';\n        return;\n    }\n\n    const tableBody = document.getElementById(\"bulkTableBody\");\n    tableBody.innerHTML = \"\";\n    bulkData = [];\n    let validCount = 0;\n    let totalCount = lines.length;\n\n    lines.forEach(line => {\n        let result = validateSingleIsbn(line);\n        let region = result.valid ? getRegion(result.clean) : \"Invalid Checksum\";\n        bulkData.push({ isbn: result.clean, status: result.valid ? \"Valid\" : \"Invalid\", region });\n        if (result.valid) validCount++;\n\n        tableBody.innerHTML += `\n            <tr>\n                <td style=\"font-family:monospace;\">${result.clean}<\/td>\n                <td>\n                    <span class=\"status-badge\" style=\"background:${result.valid ? '#e6fffa' : '#fff5f5'}; color:${result.valid ? '#2f855a' : '#c53030'};\">\n                        ${result.valid ? 'VALID' : 'INVALID'}\n                    <\/span>\n                <\/td>\n                <td style=\"color:#555;\">${region}<\/td>\n            <\/tr>`;\n    });\n\n    logBulkSummaryToWordPress(validCount, totalCount);\n    document.getElementById(\"tableWrapper\").style.display = \"block\";\n    \n    const dlBtn = document.getElementById(\"downloadBtn\");\n    dlBtn.style.display = \"flex\"; \n    if (!isPro()) {\n        dlBtn.innerText = \"Download CSV (Pro Only)\";\n        dlBtn.style.background = \"#6c757d\";\n    } else {\n        dlBtn.innerText = \"Download CSV Report\";\n        dlBtn.style.background = \"#28a745\";\n    }\n}\n\nfunction verifyAndUnlock() {\n    const enteredKey = document.getElementById('proKeyInput').value.trim();\n    if (enteredKey === PRO_ACCESS_KEY) {\n        localStorage.setItem('isbn_pro_key', enteredKey);\n        updateToProUI();\n        closePaywall();\n        processBulk(); \n    } else {\n        document.getElementById('keyError').style.display = 'block';\n        document.getElementById('proKeyInput').style.borderColor = 'red';\n    }\n}\n\nfunction exportToCSV() {\n    if (isPro()) {\n        startDownload();\n    } else {\n        document.getElementById('modalTitle').innerText = \"Pro CSV Export\";\n        document.getElementById('modalDesc').innerText = \"Batch exporting requires a Pro Access Key.\";\n        document.getElementById('paywallModal').style.display = 'flex';\n    }\n}\n\nfunction startDownload() {\n    let csvContent = \"data:text\/csv;charset=utf-8,ISBN,Status,Region\\n\";\n    bulkData.forEach(row => {\n        csvContent += `${row.isbn},${row.status},${row.region}\\n`;\n    });\n    const encodedUri = encodeURI(csvContent);\n    const link = document.createElement(\"a\");\n    link.setAttribute(\"href\", encodedUri);\n    link.setAttribute(\"download\", \"isbn_catalog_report.csv\");\n    document.body.appendChild(link);\n    link.click();\n    document.body.removeChild(link);\n}\n\nfunction closePaywall() {\n    document.getElementById('paywallModal').style.display = 'none';\n}\n\nwindow.onclick = function(event) {\n    const modal = document.getElementById('paywallModal');\n    if (event.target == modal) {\n        modal.style.display = \"none\";\n    }\n}\n<\/script><\/div>\n<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I validate a large list of ISBNs at once?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"To validate a batch of ISBNs, paste your list into the ACEworld Bulk ISBN Auditor textarea (one ISBN per line). Click 'Validate Catalog' to run an algorithmic checksum check and identify the region for every number in your list.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I export my ISBN validation results to Excel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. After processing your list, the ACEworld Pro tool generates a 'Download CSV' button. Clicking this allows you to save a full report including the ISBN, validity status, and region\/publisher group, which can be opened in Microsoft Excel or Google Sheets.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the bulk tool support both ISBN-10 and ISBN-13?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The tool is optimized for ISBN-13 but automatically converts ISBN-10 inputs into the modern 13-digit format before performing the checksum audit, ensuring your entire catalog is up to date.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does an ISBN show as 'Invalid' in the bulk audit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"An ISBN is marked as invalid if it fails the weighted modulo-10 check digit calculation. This usually indicates a typo, a missing digit, or a counterfeit number that does not follow international GS1 standards.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left\">About Bulk ISBN Validator<\/h2>\n\n\n\n<p>The&nbsp;<strong>Bulk ISBN Validator<\/strong>&nbsp;is designed for publishers, libraries, bookstores, and catalog managers who need to verify multiple ISBN numbers at once. Instead of checking each ISBN individually, this tool allows you to paste or upload a list of ISBNs and validate them instantly in a single process.<\/p>\n\n\n\n<p>The validator checks whether each ISBN follows the correct structure and mathematical checksum required for&nbsp;<strong>ISBN-10 or ISBN-13 numbers<\/strong>, helping you identify invalid or incorrectly formatted entries before publishing or cataloging books.<\/p>\n\n\n\n<p>After validation, the tool can generate a&nbsp;<strong>clean exportable report (CSV)<\/strong>, making it easier to organize book catalogs, manage publishing inventories, or prepare ISBN lists for distributors and databases.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Disclaimer &amp; Terms of Use<\/h3>\n\n\n\n<p>The <strong>Bulk ISBN Validator &amp; Catalog Auditor<\/strong> is provided &#8220;as is&#8221; without warranties of any kind, express or implied. This tool is designed for catalog auditing and informational purposes and should not be used as the sole determinant for legal or financial publishing decisions.<\/p>\n\n\n\n<p><strong>By utilizing the Bulk ISBN Validator &amp; Catalog Auditor, you acknowledge the following:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Professional Scope:<\/strong> This tool provides algorithmic verification and does not constitute legal or professional publishing advice.<\/li>\n\n\n\n<li><strong>Data Integrity:<\/strong> The accuracy of the audit report is dependent on the quality of the raw data provided in the batch input.<\/li>\n\n\n\n<li><strong>Non-Guarantee:<\/strong> Successful checksum validation does not guarantee that a title is currently in print or registered with a specific agency.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Limitation of Liability<\/h3>\n\n\n\n<p>In no event shall ACEworld, its developers, or affiliates be held liable for any damages\u2014including but not limited to incidental, consequential, or punitive damages\u2014resulting from the use of this tool or the reliance on its generated reports. <em>Barcode Services provided via TEC-IT Integration.<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Intellectual Property Rights<\/h3>\n\n\n\n<p>The ACEworld Bulk ISBN Validator &amp; Catalog Auditor, including its proprietary logic, interface design, and documentation, is protected by international intellectual property laws. Unauthorized reproduction, distribution, or commercial exploitation of this tool&#8217;s components is strictly prohibited and may result in civil and criminal penalties.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Bulk ISBN Validator tool is designed for publishers, libraries, and bookstores to verify large lists of ISBNs instantly. 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