Find detailed answers to all your PDF questions. Browse FAQs for each of our 15 free online PDF tools and learn how to get the most out of PDF Lab.
← Back to PDF ToolsWelcome to the PDF Lab FAQ & Help Center! We've created detailed FAQ pages for each of our 15 professional PDF tools. Each FAQ page contains:
Select any tool below to view its dedicated FAQ page, or click "Use Tool" to try the tool directly.
Learn how to add text, images, drawings, comments, and checkboxes to PDF documents online for free.
Find answers about combining multiple PDF files into one document with page selection and reordering.
Get help extracting specific pages from PDF documents and creating new files from selections.
Discover how to reduce PDF file sizes with three compression levels while maintaining quality.
Learn to rotate PDF pages by 90, 180, or 270 degrees with per-page or batch rotation options.
Get answers about drag-and-drop page reordering, duplication, and deletion in PDF files.
Find out how to add password protection and set permissions for printing, copying, and editing PDFs.
Learn how to remove passwords and restrictions from PDF files using QPDF and FPDI methods.
Discover how to add electronic signatures, drawings, and signature images to PDF documents.
Get help applying password protection to multiple PDF files simultaneously with batch processing.
Learn how to add customizable page numbers to PDFs with different positions and formats.
Find answers about adding image watermarks with custom opacity, scale, rotation, and positioning.
Get help converting PDFs to Word, Excel, PowerPoint, or image formats (DEMO feature).
Learn how to convert images and scanned documents to PDF format with camera capture support.
All PDF Lab tools process your files securely. Your documents are temporarily stored only during processing and are automatically deleted afterward. We never access, store permanently, or share your files with third parties. All uploads happen over HTTPS for encrypted transmission.
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