ArmorPDF Blog

Most online PDF tools require you to upload your files to a remote server. Learn why that is a privacy risk, and how ArmorPDF lets you merge PDFs entirely in your browser without uploading anything.

Online PDF tools are convenient, but many of them process your files on remote servers. We break down the risks involved and explain what to look for in a truly safe PDF tool.

PDFs can be too large to attach to an email. Learn about common email size limits, why PDFs are often oversized, and how to compress them quickly without sacrificing quality.

You do not need to install an app to combine PDFs on your iPhone. Learn how to use browser-based tools on iOS to merge documents in seconds, right from Safari.

Many PDF tools demand you create an account before you can do anything. Here is an overview of ArmorPDF's completely free, no-signup-required tools and why privacy matters.

PDFs contain hidden metadata like author names, software used, and edit history. Learn what metadata is stored, why it matters, and how to strip it before sharing documents.

Locked PDFs can block printing, copying, and editing. Learn the difference between user and owner passwords, and how to remove restrictions from your own documents.

PDFs often lack page numbers, making printed documents hard to navigate. Learn how to add page numbers to any PDF with customizable formats and positioning.

Watermarks protect your documents and signal their status. Learn when to use watermarks, how to customize them, and how to add them without uploading your files.

Need to turn PDF pages into PNG or JPEG files? Learn when image conversion is useful, how to choose between formats, and how to do it privately in your browser.

AI-powered background removal that runs 100% in your browser. No uploads, no servers, no privacy concerns. Get clean cutouts from photos in seconds.