Guides, Tutorials & Tips

Add page numbers to any PDF in seconds with ToolNest AI. Learn every position option, format style, and starting number setting — plus how to do it with pdf-lib, Python pypdf, and iText in code.

A complete guide to PDF compression — how it works, what affects file size, how to choose the right quality level, and how to compress PDFs with Ghostscript, pdf-lib, Python pypdf, and the ToolNest AI online tool.

Delete specific pages from any PDF — click to select, type a range, or use code with pdf-lib, pypdf, or Ghostscript. Instant browser-side processing, no file upload required.

Learn how to convert Excel spreadsheets to PDF using LibreOffice, Python openpyxl and reportlab, and Excel's built-in export. Control print area, page breaks, and which sheets to include.

Learn how to convert and combine images into a PDF using browser tools, pdf-lib, Python Pillow, and ImageMagick. Control page size, margins, and image fit mode.

Merge any number of PDF files into a single document — drag to reorder, then combine. Plus step-by-step code with pdf-lib, pypdf, and Ghostscript. Free online with no sign-up.

Convert scanned PDF images into searchable, selectable text with OCR (Optical Character Recognition). With Tesseract, Python, Node.js, and command-line tools. Free online, 100+ languages.

Learn how to organize PDF pages with drag-and-drop reordering, rotation, duplication, and deletion — using browser tools, pdf-lib, Python pypdf, and pdftk.

Learn how to view and edit PDF metadata — Title, Author, Subject, Keywords, Creator — using browser tools, pdf-lib, Python pypdf, and ExifTool. Strip hidden metadata for privacy.