Extraction uses modern browser technology for local processing: Step 1: After PDF upload, file is loaded into browser memory with FileReader API – no server upload. Step 2: PDF.js (Mozilla library) analyzes PDF and renders each page as HTML5 canvas in thumbnail size for preview. Step 3: You select desired pages via checkbox – multiple pages simultaneously possible. Step 4: Only selected pages are rendered in configured quality (1x-3x resolution). Step 5: jsPDF creates new PDF document with only these pages in original order. Step 6: Finished PDF is generated as Blob and automatically downloaded. Performance: Even with PDFs of 1,000+ pages, previews are generated in seconds – extraction itself takes depending on page count 5-60 seconds.

Quality influences resolution and file size of extracted pages: Standard (1x): Rendering at native PDF resolution – compact files for email sending and screen viewing. Text remains readable, images in original quality. Ca. 100-300 KB per A4 page. High (2x): Double resolution – sharper text, more detailed graphics. Ideal for important documents, presentations, or archiving. Ca. 300-800 KB per page. Very High (3x): Triple resolution – maximum quality for printing, legal documents, or long-term archiving. Ca. 600KB-1.5MB per page. Recommendation: Standard for digital documents (already optimized PDFs). High for scanned documents with text recognition need. Very High only for archiving purposes or professional printing. Computation time: Higher quality = longer processing (ca. 2-3x time with 3x quality). File size calculation: Number pages × size per page = total size (e.g., 10 pages × 500 KB = 5 MB with High quality).

Yes, multiple methods for flexible selection: Individual selection: Click checkbox of each desired page – for non-consecutive pages (e.g., page 1, 5, 7, 12). Quick selection "All": Button selects all pages of PDF at once – then you can deselect unwanted pages (faster than clicking all individually). Quick selection "Odd": Selects pages 1, 3, 5, 7… – useful in duplex scans where front sides should be extracted. Quick selection "Even": Selects pages 2, 4, 6, 8… – for backs in duplex scans. Range selection: Select first page of range, hold Shift key, click last page – all pages in between are marked (works like in Windows Explorer). Combination: You can combine all methods – e.g., first "All" select, then deselect pages 5-10, then select page 15 individually again. Visual: Selected pages have green frame and checkmark – immediate overview of what will be extracted.

No, absolutely no transfer or storage: Local processing: Complete PDF remains in your browser memory. Not a byte is sent to our or external servers. Technical verification: Open browser DevTools (F12) → Network tab – during extraction you see zero upload requests. Only CSS/JS libraries are loaded (PDF.js, jsPDF). No cookies: We don't set tracking cookies or session storage. Tool works completely anonymous. No analytics: No Google Analytics, no usage statistics, no tracking which PDFs you process. GDPR compliant: Since no data transfer occurs, there's no GDPR issue – completely data protection compliant. Security: Ideal for highly sensitive documents – contracts with confidentiality clauses, medical records, financial documents, internal reports. After browser closing: All PDF data is deleted from RAM – no persistence on hard drive (except your download in Downloads folder). Offline capable: After first loading, tool also works offline (if browser has PDF.js/jsPDF cached).

Limits depend on browser RAM and hardware: Technical maximum: PDF.js supports PDFs up to 5,000 pages (depending on complexity). Extraction itself has no theoretical limit. Practical limits by system: Desktop PC (16GB RAM): 1,000-2,000 pages without problems. Laptop (8GB RAM): 500-1,000 pages comfortably. Tablet/smartphone: 50-200 pages (limited RAM). File size limit: Individual PDF can be up to 2GB – browser FileReader supports this. Processing time: Extract 50 pages: 5-15 seconds. 200 pages: 20-40 seconds. 1,000 pages: 2-5 minutes (depending on quality and hardware). RAM management: Browser tab can use 2-4GB RAM – if exceeded, browser may crash. Close other tabs before large extractions. Recommendation: For regular use: up to 500 pages. For power users with good PC: up to 2,000 pages. Above: use desktop software. Multiple extraction: With 2,000+ page PDFs, better extract in blocks (e.g., 2× 500 pages instead of 1× 1,000).

Order is maintained from original PDF: Standard behavior: Extracted pages appear in output PDF in same order as in original. If you select pages 5, 3, 10, they appear as 3, 5, 10 (not 5, 3, 10). Reason: Tool maintains logical page order of original – prevents accidental disorder in documents where page order is important (contracts, reports). Workaround for reordering: Extract pages in multiple passes: First page 10 alone → "Page10.pdf". Then page 3 alone → "Page3.pdf". Then page 5 alone → "Page5.pdf". Afterwards use PDF merger tool to combine in desired order. Alternative: Use desktop software like Adobe Acrobat or PDFtk for complex reorderings with drag-and-drop. Use case: For 95% of cases, original order is desired – you extract connected sections. Complex reorderings are edge cases.

Interactive elements become static images: Behavior: Tool renders PDF pages as canvas images – all interactive elements (form fields, buttons, links) are "flattened" to visual content. Filled forms: If form is already filled, entered values are visible in output PDF – but no longer editable. Empty forms: Empty form fields appear as empty boxes – cannot be filled anymore in output. Hyperlinks: Clickable links in original become blue underlined text – no longer clickable in output. Reason: PDF.js renders visual representation, not interactive structure. jsPDF creates new "flat" PDF from images. Workaround for editable forms: Use special PDF form software or Adobe Acrobat that maintains form structure. Use case focus: Our tool is optimized for document extraction (texts, images, tables) – not for form editing. For contracts, scans, reports perfect – for interactive PDFs less suitable.

Zoom enables detailed page view before selection: Zoom levels: Buttons allow switching between 100% (standard thumbnails), 150% (larger preview), 200% (detail view). Purpose: With small thumbnails, text is hard to read – zoom enlarges all previews simultaneously for better readability. Application: Not sure if page 45 is the right one? Zoom to 200% to read text before clicking checkbox. Performance: Zoom doesn't re-render pages – only enlarges existing canvas elements (no additional load time). Responsive: On smaller screens (tablet, smartphone), grid layout automatically adjusts – fewer columns with zoom. Image quality: Previews are initially rendered in medium resolution – with 200% zoom text may look slightly pixelated (final extraction has full quality). Navigation: With large PDFs (100+ pages) you scroll through all previews – zoom helps identify individual pages without endless scrolling. Tip: Use browser search (Ctrl+F) to search for text in preview area – browser doesn't find text in canvas, but in page numbers.

Limited support for password-protected PDFs: PDFs with opening password: If PDF requires password to open (User Password), browser CANNOT process it – encryption prevents access to content. You must remove password first with desktop software. PDFs with editing restrictions: PDFs that restrict printing/copying/editing (Owner Password) but WITHOUT opening password: CAN be processed – browser can read content even if operations are restricted. Technical reason: Browser JavaScript cannot decrypt encrypted PDFs – would require password input, crypto libraries, and complex key management. Workaround: Use Adobe Acrobat, PDF-XChange, or qpdf (command line) to remove password: `qpdf --password=PASS --decrypt input.pdf output.pdf`. Then load unlocked PDF into our tool. Output PDF: Extracted pages have NO password – new PDF is created without encryption. If you need protection, add password afterwards with desktop tools. Privacy: Password removal locally (not in our tool) remains secure – no online upload necessary.

Troubleshooting with performance issues: Cause hanging: Browser freezes when RAM is overloaded (PDF too large, too many pages, quality too high) or when other tabs occupy much memory. Immediate measure: Wait 30-60 seconds – browser might only be working slowly, not crashed. Progress bar should move minimally. If really frozen: Close browser tab (Ctrl+W) or end task in Task Manager. Original PDF remains intact on computer. Prevention: Close all other browser tabs before large extractions (frees more RAM). Reduce quality from "Very High" to "High" or "Standard". Extract fewer pages at once (e.g., 100 instead of 500). Browser choice: Chrome/Edge have better performance than Firefox with large PDFs. Use latest browser version. Hardware limits: 4GB RAM system: max 100-200 pages. 8GB RAM: max 500 pages. 16GB+ RAM: 1,000+ pages possible. Alternative large PDFs: For extreme cases (2,000+ pages) use desktop software like Adobe Acrobat Pro or PDFtk – these are more RAM efficient. Progress indicator: If progress bar stops at e.g., 45% and doesn't continue (5+ minutes), browser is probably hung – terminate and retry with fewer pages.