PDF Analyzer

Comprehensive PDF analysis tool with document statistics, content analysis, structure examination, metadata extraction, and security analysis.

🔒 100% Privacy Protected
0 Bytes Uploaded — 100% Client-Side In-Browser Processing
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Drop your PDF files here or click to browse
No files selected 0 MB

Analysis Options

Analysis Progress

Ready to analyze

Document Statistics

Page Analysis

Document Information

Text Content

Images and Media

Security Status

Encryption & Permissions

Font Information

Typography Analysis

Document Structure

Object Catalog

How to Use the Pdf Analyzer

Using our Pdf Analyzer is designed to be completely frictionless. Simply upload your files using the drag-and-drop interface or click to browse your device. Once selected, configure the settings to your exact specifications. When ready, click the process button. The operation runs entirely within your browser, ensuring maximum privacy and speed without relying on external servers. Finally, download your processed file directly to your system.

Technical Explanation

The Pdf Analyzer leverages advanced client-side processing technologies to manipulate data directly on your device. Instead of uploading your sensitive files to a remote server—which carries significant privacy risks and consumes massive bandwidth—this tool utilizes HTML5 File APIs, WebAssembly, and native JavaScript array buffers.

When you initiate the process, the application reads the file into memory using a FileReader. It then applies complex algorithms—such as compression heuristics, codec transformations, or binary manipulation—depending on the specific task. The output is dynamically generated as a Blob object, which the browser then prompts you to download. This architecture guarantees that your data never leaves your machine.

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'; return html; } // Helper methods safeGet(fn) { try { return fn(); } catch (error) { return null; } } detectPDFVersion(pdfDoc) { try { // PDF version detection is limited in pdf-lib return '1.7+'; } catch (error) { return 'Unknown'; } } getPageSizes(pages) { return pages.map(page => { const { width, height } = page.getSize(); return `${Math.round(width)}×${Math.round(height)}`; }); } calculateTotalArea(pages) { return pages.reduce((total, page) => { const { width, height } = page.getSize(); return total + (width * height); }, 0); } detectImages(pdfDoc) { try { // Image detection is limited in browser environment return 'Likely present'; } catch (error) { return 'Unknown'; } } detectForms(pdfDoc) { try { const form = pdfDoc.getForm(); return form.getFields().length > 0; } catch (error) { return false; } } detectBookmarks(pdfDoc) { try { // Bookmark detection is complex return false; } catch (error) { return false; } } detectLanguage(text) { // Simple language detection based on character patterns if (/[àáâãäåæçÃéêëìíîÃñòóôõöøùúûüýß]/.test(text)) { return 'Likely European language'; } else if (/[а-ÑÑ‘]/i.test(text)) { return 'Likely Cyrillic'; } else if (/[α-ω]/i.test(text)) { return 'Likely Greek'; } else { return 'Likely English'; } } getSecurityRecommendations(isEncrypted, issues) { const recommendations = []; if (!isEncrypted) { recommendations.push('Consider password protection'); } if (issues.includes('No document title')) { recommendations.push('Add document title'); } if (issues.includes('No document author')) { recommendations.push('Add document author'); } recommendations.push('Review document permissions'); return recommendations; } getCatalogInfo(pdfDoc) { try { // Catalog information is limited in browser environment return 'Standard PDF Catalog'; } catch (error) { return 'Unknown'; } } detectOutlines(pdfDoc) { try { // Outline detection is complex return false; } catch (error) { return false; } } detectAnnotations(pdfDoc) { try { // Annotation detection is complex return 'Likely present'; } catch (error) { return false; } } detectAttachments(pdfDoc) { try { // Attachment detection is complex return false; } catch (error) { return false; } } updateStatus(fileName, status, text) { const statusElement = document.getElementById(`status-${fileName}`); if (statusElement) { const className = status === 'completed' ? 'status-analyzed' : status === 'processing' ? 'status-processing' : 'status-error'; statusElement.innerHTML = `${text}`; } } updateProgress(percentage, text) { this.progressBar.style.width = `${percentage}%`; this.progressText.textContent = text; } formatFileSize(bytes) { if (bytes === 0) return '0 Bytes'; const k = 1024; const sizes = ['Bytes', 'KB', 'MB', 'GB']; const i = Math.floor(Math.log(bytes) / Math.log(k)); return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]; } reset() { this.selectedFiles = []; this.analysisResults.clear(); this.fileInput.value = ''; this.fileList.innerHTML = `
No files selected 0 MB
`; this.outputSection.style.display = 'none'; this.progressBar.style.width = '0%'; this.progressText.textContent = 'Ready to analyze'; this.isProcessing = false; this.updateButtonStates(); } } // Initialize the analyzer when the page loads let analyzer; document.addEventListener('DOMContentLoaded', () => { analyzer = new PDFAnalyzer(); });