PDF Tools — Guides & Articles

• Mistakes to Avoid When You Overlay PDF Pages Locally

  Published 2026-09-12

  Stop overlay mistakes: pick the right base and overlay PDFs, set opacity between 0.1 and 1, and inspect every page before sharing or printing.

  

• N-Up a Large PDF: How the 25 MiB Cap Shapes Output

  Published 2026-09-12

  N-Up a large PDF in your browser with a 25 MiB and 500-page cap. See how the 2-up vs 4-up math affects output sheet count without uploading.

  

• Edit PDF Metadata: What Changes vs What Stays the Same

  Published 2026-09-12

  A clear guide to editing PDF metadata in your browser. Learn which fields the local tool changes, what stays untouched, and how to handle dates and…

  

• Extract Links From a PDF Explained: What the Tool Reads

  Published 2026-09-12

  Extract links from a PDF explained: a browser tool reads link annotations, accepts HTTP, HTTPS, mailto, tel only, and exports a local CSV or TXT report.

  

• Large Paper Sizes: A0, A1, A2 and Big Format Charts

  Published 2026-09-12

  Need large paper size dimensions? Look up A0, A1, A2, B series, Tabloid and Ledger sizes in mm, cm and inches, then convert to pixels at any DPI.

  

• Merge PDF Alternative: A Private Browser-Based Option

  Published 2026-09-12

  Looking for a merge PDF alternative? A browser-based tool combines files locally, skips uploads, costs nothing, and works without an account.

  

• PDF Header and Footer Stamp: Tokens, Margins, and Limits

  Published 2026-09-11

  A reference for stamping a header and footer on every page of a local PDF: which tokens expand, the accepted sizes and margins, and what the output filename…

  

• How to Know if You Need the Convert PDF to Grayscale Tool

  Published 2026-09-11

  Decide if the Convert PDF to Grayscale tool fits: ink-saving print, monochrome upload, or a quick visual reference. Skip it when text or links must stay.

  

• Avoid Mistakes When You Mirror PDF Pages in the Browser

  Published 2026-09-11

  Common PDF mirroring mistakes and how the local Flip Mirror PDF Pages tool prevents each one — wrong axis, stored rotation, and password protection.

  

• Flatten PDF Multiple Files at Once in Your Browser

  Published 2026-09-11

  Need to flatten PDF multiple files at once? Process completed forms one after another in your browser with no upload, no server, and originals untouched.