SwifDoo PDF Blog, explore the newest usage scenarios of PDF

Blog

How to Change PDF Security Settings Easily

Users in some cases need to change PDF security settings to better protect information. This post will explain how to change password protection in a few steps.

How to Create a PDF on Windows/Mac/Online/Mobile [Fast & Easy]

Do you know how to create a PDF and what PDF creator to use? Keep reading to find out the methods and tools available for Windows, Mac, online, and phones.

Easiest Methods to Delete Pages from PDF for Free

It's necessary to delete pages from a PDF when the file contains too much irrelevant content. See how to remove PDF pages for better file management.

How to Highlight a PDF | 2025 Complete Tutorial

A PDF highlight tool is much needed when you need to mark up a PDF document. This post explains how to highlight a PDF and change the highlight color in a PDF.

How to Easily Split PDF Pages in 2024 [Free Options]

Splitting a PDF can reduce the file size and ease file sharing. Check out how to split a PDF page in half vertically and split a PDF into multiple files.

How to Remove Redaction from PDF Documents [Windows/Mac/Online]

Discover how to remove redaction from PDFs on Windows, Mac, and online platforms. Recover your blacked-out text easily in a PDF.

How to Type on a PDF Directly [Windows/Mac/Online/Phone]

Find out how to type on a PDF using the simplest methods. This post shows you step-by-step tutorials to do the work on Windows, Mac, online, iPhone and Android.

How to Change Font Size in PDF Fillable Form [Windows/Mac/Online]

This post teaches you how to change the font size in a PDF fillable form with easy steps. Discover the PDF editors to do that on Windows, Mac, and online.

5 Top-rated PDF Signature Removers [2024 Newest]

Discover the 5 latest PDF signature removers for 2024. Remove electronic or digital signatures from your PDF effortlessly with these trusted tools.

How to Combine PDFs into One Easily on Windows/Mac/Online [2024]

Combining multiple PDFs into one is convenient for file sharing and management. Check out how to do that without efforts on Windows, Mac, and online.