How to password protect a PDF

Some PDFs need more care than others before they leave your hands. A medical report going to a new specialist, a payslip for a mortgage broker, a tenancy agreement with your bank details on page four. Emailing the file as an attachment means a copy sits in two inboxes indefinitely, and anyone who gets hold of the message can open it.

This guide covers the usual ways people lock a PDF, the trade-offs that come with each, and how to add a password to a PDF in Fabric and send it as a link you can change or revoke later.

How people usually password protect a PDF

The classic route is Adobe Acrobat, which can encrypt a PDF with a password that’s stored in the file itself. The PDF then asks for the password in whatever reader opens it, which is useful when the file has to travel as an attachment. The catch is that the protection is baked into that copy. If you want a different password, or want to stop someone opening it, you have to make a new file and send it again, and the old copy still works with the old password.

On a Mac, Preview can do something similar through File, Export, with an encryption option in the export dialog. It’s free and quick for a single document. People without either tool often turn to free online PDF sites, which means uploading a sensitive document to a service you know little about just to lock it.

The other common approach skips file passwords altogether and relies on cloud drive sharing settings, restricting a link to named accounts. That works well when the recipient uses the same kind of account. When they don’t, they hit a sign-in wall, and you end up switching the link to “anyone with the link” to get it through. How to share large files securely compares these methods in more detail.

Step 1: Add the PDF to Fabric

Drag the PDF into the Fabric web or desktop app, paste it, or click Upload a file. If you work from Finder or File Explorer, the Fabric desktop app mounts Fabric as a drive on Mac, Windows and Linux, so you can drop the PDF into it like any other folder.

Once it’s in, Fabric reads the text so you can search inside the document later. That matters for the kind of PDFs people tend to lock, such as statements and reports, where you might want to find a reference number months from now.

Step 2: Add password protection

Right-click the PDF, or open it and click the three-dot menu, and choose Add password protection. Enter a password. Password protection is on the Pro and Team plans.

There’s no password reset, so save the password in a password manager before you close the dialog. From this point, anyone with access to the PDF has to enter the password to open it. Access lasts 6 hours, after which they’re asked again.

If you’re protecting several PDFs that belong together, such as a year of bank statements, you can put them in a folder and protect the folder instead. A password on a folder also covers files added to it later.

Step 3: Share or publish the PDF

Click Share to open the share modal. You have two choices, and both work with a password-protected PDF.

Sharing suits a PDF that someone needs to work on with you. You choose a role (viewer, commenter or editor), and a commenter can highlight text in the PDF and add a comment, which is handy for a contract or report that needs questions answered. People outside your workspace can open a shared link without signing up. The roles and permissions page explains each role.

Publishing suits a PDF you’re delivering. Open the Publish tab, click Create link, and set up the link: give it a name, choose whether to collect engagement analytics, whether to allow indexing by search engines, whether visitors can copy it to their Fabric, and whether to allow downloads. For a private document, leave indexing off; how to stop search engines indexing a shared file explains why. If you’d rather the PDF stays behind the protected link, leave downloads off too. More on the options is on the publish page.

Step 4: Send the password separately and keep control

Send the link in one message and the password in another, ideally through a different channel. A link by email and a password by text message is a common pairing.

If you turned on analytics for a published link, link analytics show visits to that link with dates, location and device. Analytics don’t name the visitor, so if you’re sending the PDF to more than one person, create a separate named link for each and you can see which have been opened.

To change the password, enter the old one and choose a new one. To remove protection, you enter the password to confirm. Either way, the PDF stays at the same link, so nothing needs re-sending.

Frequently asked questions

How do I password protect a PDF without Adobe Acrobat?

On a Mac, Preview can export an encrypted PDF. In Fabric, upload the PDF, right-click it, choose Add password protection, and share or publish the link. Password protection in Fabric needs a Pro or Team plan.

Is password protecting a PDF in Fabric free?

No. Password protection is on the Pro and Team plans. Uploading and publishing PDFs are on the free plan. See pricing for plan details.

What happens if I forget the password?

There’s no password reset, so a forgotten password can’t be recovered. Store it in a password manager when you set it.

How long can someone view the PDF after entering the password?

Access lasts 6 hours. After that, they need to enter the password again.

Can I change the password after I’ve sent the link?

Yes. Enter the old password, then choose a new one. The link stays the same, so you only need to send the new password.

Can I stop people downloading a password-protected PDF?

On a published link, downloads are a setting you choose when you create the link. Leave Allow downloads off and visitors can view the PDF without saving a copy from the link.

Can I tell if someone opened the PDF?

With analytics turned on for a published link, you see visits with dates, location and device. Give each recipient their own named link to see who has opened it. Link analytics are on the Pro and Team plans.

Can someone comment on a password-protected PDF?

Yes, if you share it with them as a commenter. They enter the password, then highlight text and add comments. Published links are view only.