Blog — All About PDF - Your PDF Toolkit

Sarah A

How to Password Protect PDFs in Bulk Using Content from Each File

Managing large volumes of PDFs can be a challenge—especially when each document needs to be individually secured with a password. But what if you could let the document secure itself?

We’re excited to introduce a new feature that allows you to use text from within a PDF—such as an invoice number, customer ID, or name—as the password (or part of the password) for that file. This is especially powerful when you’re batch processing multiple PDFs, and each one requires a unique password based on its contents.


Why This Matters

Traditionally, password-protecting PDFs in bulk required external data sources, manual input, or the same password for every file—none of which are ideal when you’re handling sensitive, personalized documents. Our new feature solves this by letting the content within each PDF drive its own security.


Real-World Use Cases

  • Invoices: Automatically set each PDF’s password to the invoice number or customer ID printed within the file.

  • Payslips: Use the employee’s name or employee ID from inside the document as the password.

  • Statements: Secure bank or utility statements using account numbers embedded within each PDF.

  • Certificates: Protect certificates or official documents using candidate names or registration numbers.


How It Works

To get started, open All-About-PDF and click on the “Protect” tile as usual. Then, select the file—or an entire folder—you want to password-protect. You can also use wildcards to target multiple specific files in one go. e.g Invoice10*.pdf


Next, click the “Select” button to load a preview of the PDF. This lets you visually choose the area of the document from which the password text will be extracted.

You can prepend or append custom text to the extracted content to create a more complex password. For example:

mypwd{{32.08,738.53,106.11,743.47,1}}!

Just make sure not to edit the text within the double curly braces {{ }}, as this defines the coordinates and page of the text to extract.

Repeat this step for both the User and Owner passwords as needed. Once you’re done setting permissions, click “GO” to apply password protection to all selected documents.

It’s that easy. It’s flexible, scalable, and eliminates the need for separate spreadsheets or manual password assignment.


A Smarter, Safer Workflow

This feature doesn’t just save time—it helps reduce errors, improve personalization, and strengthen document security. Whether you’re a financial institution, HR department, school, or business sending sensitive documents, this new capability brings smarter automation to your PDF workflows.

Try it today and see how easy and secure batch processing can be.

The Hidden Danger of Free Online PDF Converters: Why Local Processing is the Safer Choice

We’ve all been there. You’re in a rush, you need to convert a PDF to Word or Excel, and a quick Google search brings up dozens of “free PDF conversion” websites. Sounds convenient, right? Just upload your file, click a button, and you’re done. But what many people don’t realize is that this convenience can come with a hidden cost—your security.

The Problem with Uploading Your PDFs Online

When you upload a document to a free conversion site, you’re handing over control. You don’t know what’s happening behind the scenes. Is the site just converting your document—or is it harvesting data? Even worse, some of these sites might be quietly preparing a malware-laced download in the background.

Once you click that final “Download” button, you could be bringing more than just your converted file onto your computer. You might unknowingly install malicious software—keyloggers, spyware, or trojans—that compromises your system, steals personal information, or opens backdoors for cybercriminals.

Frustrated woman in front of her computer which has been hacked

It’s Not Just Paranoia—It’s Happening

Cybersecurity experts have long warned about “free tool” websites that serve as traps. Some of them use aggressive pop-ups and fake buttons to trick users into downloading dangerous files. Others are even more subtle, slipping malicious code into the download without raising any red flags. And let’s not forget: any sensitive information in your PDF—like invoices, contracts, or personal data—is now on someone else’s server. That’s a privacy nightmare waiting to happen.

A Smarter, Safer Alternative: Local PDF Tools

That’s exactly why we built All-About-PDF. Unlike browser-based converters, All-About-PDF processes your documents entirely on your computer. No uploading. No cloud servers. No risk of man-in-the-middle attacks. Just fast, powerful PDF tools that work offline and keep your data where it belongs—on your machine.

With All-About-PDF, you can:

  • Convert PDFs to Word, Excel, PowerPoint, and more

  • Merge, split, or password-protect your files

  • Compress and optimize PDFs without sending them anywhere

  • Add password and DRM protection to your PDF files

It’s not just about functionality. It’s about trust. We believe your documents should never leave your computer unless you decide to send them. It is for this reason that we engineered our web-based PDFe Reader to use Web Assembly technology to ensure that all processing happens locally on your computer.

Bottom Line

Free online converters might seem like a quick fix, but they can open the door to security breaches and data loss. If you’re serious about protecting your information, choose tools that respect your privacy and work locally. Convenience is great—but peace of mind is better.

Mastering PDFs for Job Hunting: Ethics, LinkedIn Conversions, and ATS Optimization

The Ethical Use of PDFs: Protecting Intellectual Property in a Digital Job Hunt

In today’s job market, digital tools like PDFs play a crucial role in presenting yourself to potential employers. However, with great convenience comes great responsibility. As job seekers, we must use PDFs ethically and protect our intellectual property in the process. Here's how:

Understand the Value of Your Intellectual Property

Your resume, portfolio, and cover letter represent hours of effort, creativity, and personal branding. Recognizing their value is the first step toward safeguarding them. Employers should respect your work as intellectual property, and you should ensure it’s not easily misused.

Use Watermarks or Passwords

To deter unauthorized use of your documents, consider adding subtle watermarks like “Confidential” or your name. Additionally, password-protect PDFs to ensure that only intended recipients can access or edit them.

Avoid Sharing Editable Formats

While Word documents are convenient, they’re easily editable. PDFs preserve formatting and are harder to alter without leaving a trace. Stick to PDFs for official submissions.

Be Mindful of Copyright Laws

If your portfolio includes work you’ve done for previous employers, ensure you have permission to share it. Labeling such work as “for demonstration purposes only” can clarify your intentions and respect intellectual property rights.

How to Convert LinkedIn Profiles into Professional PDF Resumes

LinkedIn is a powerful tool for job seekers, and its profile-to-PDF feature allows you to create a professional resume quickly. Here’s a step-by-step guide:

Optimize Your LinkedIn Profile First

Before converting, make sure your LinkedIn profile is complete and polished:

- Use a professional profile photo.

- Write a compelling headline.

- Highlight your key achievements in the About section.

- Add skills, endorsements, and recommendations.

Export Your Profile to PDF

- Log in to your LinkedIn account and navigate to your profile.

- Click on the “More” button (next to the “Open to” button).

- Select “Save to PDF.” LinkedIn will generate a neatly formatted PDF of your profile.

Customize the PDF

LinkedIn’s PDF export is a great start, but it may need tweaking:

- Use a PDF editor to remove unnecessary sections or adjust formatting.

- Add a cover letter or portfolio link for a more comprehensive package.

Check for Accuracy

Double-check the exported PDF for errors or omissions. Ensure your contact information and job history are up to date.

How to Optimize PDFs for ATS (Applicant Tracking Systems)

Many employers use Applicant Tracking Systems (ATS) to filter resumes before they reach human eyes. Optimizing your PDF ensures it passes ATS screening. Here’s how:

Stick to Standard Fonts and Formatting

ATS systems struggle with non-standard fonts, graphics, and intricate layouts. Use simple, readable fonts like Arial or Times New Roman, and avoid excessive design elements.

Use Keywords Strategically

Tailor your resume to the job description by incorporating relevant keywords. These are often the skills and qualifications listed in the job posting.

Avoid Text in Images

ATS cannot read text embedded in images. Ensure all critical information is in plain text format.

Save the PDF Correctly

When saving your resume as a PDF:

- Ensure it’s not scanned as an image.

- Use a clear file name, such as “John_Doe_Resume.pdf.”

Test Your PDF

Before submitting, use online ATS-friendly resume checkers to ensure your document is parseable. Tools like Jobscan can analyze how well your resume aligns with a job description.

By following these strategies, you’ll not only enhance your job applications but also safeguard your professional brand. Whether you’re ethically sharing your work, converting LinkedIn profiles, or ensuring ATS compatibility, PDFs can be your best ally in the digital job market.


The Secret PDF Feature in iOS and iPadOS 15

As you may know, Apple has always made the PDF format a first-class citizen in its operating systems going back to the original Mac OS X. In fact, OS X was the first operating system that used PDF technology within the operating system itself. Apple called this technology ‘Quartz’. Quartz is a layer of software that runs on top of Darwin, the core (or kernel) of the Mac OS X operating system, and is responsible for the rendering of all 2D objects.

As is now customary, Apple held their World Wide Developer (WWDC) conference in June where they announced iOS 15 and iPadOS 15. These software updates come with a plethora of new features however, one that is not mentioned in any highlight reel, is some new functionality when it comes to processing PDF files. Using the built-in Files app, you can now handle the following PDF functions:

- Rotate PDF pages

- Insert blank pages into a PDF document

- Insert a PDF from file

- Scan Pages into an existing PDF

- Delete pages from a PDF

Here is how this works in iOS and iPadOS 15:

- Start by opening a PDF document in the Files app

- From the left edge of your iPhone or iPad, swipe to the right to expose the page thumbnails

- Press and hold on a page or double-tap a page to open its edit menu

- You can now select the PDF function you would like to invoke from the menu. Handy right?

Have you found any other PDF function hidden in iOS or iPadOS 15? Let us know on Twitter @allaboutpdf