How to add a link to a PDF free, and what free actually costs you
You can add a link to a PDF free. You do not need Acrobat Pro, and you almost certainly should not pay for a subscription to do a job this small. What you do need to know is that the free routes are not equivalent, and the one most people reach for first is the one I would use last.
I have made this mistake plenty. Running growth at a data company I would build a one-pager in Google Slides, export it, notice the demo link was dead, then go hunting for a free PDF editor at eleven at night and upload a document with client names in it to a site I had never heard of. That was a bad habit and I have since stopped.
The four ways to add a link to a PDF free
Go back to the file you made it in
If the PDF started life as a Word doc, a Google Doc, a Slides deck or a Canva design, add the link there and export again. Word and Google Docs both carry hyperlinks straight through to PDF, and you keep the source file editable for next time.
This is the boring answer and it is the right one. It costs nothing and it uploads your document precisely nowhere. The only reason not to do it is if you have genuinely lost the source file, which does happen more than anyone admits.
LibreOffice Draw, if the source file is gone
LibreOffice Draw opens a PDF directly and lets you place a hyperlink on text or a shape through the Hyperlink dialog, then export back to PDF. It is free, open source, and it runs on your machine, so nothing leaves your laptop.
The catch is that Draw treats a PDF as a drawing rather than a document. Text reflows oddly on complex layouts, and a heavily designed deck can come out looking slightly wrong. Check every page before you send it. On a simple text-led document it is fine.
A free online PDF editor
Sejda, Xodo and PDFescape all let you add links to a PDF online without paying. Sejda is the one I have used most and it publishes its limits plainly: three tasks per hour, 50MB per file, documents up to 200 pages, and 20 links per task on the free tier. That is enough for a proposal and not enough for a catalogue.
The trade-off is the thing nobody mentions, and it gets its own section below.
Acrobat Pro, which is not free
Acrobat Pro has the best link tool of the lot. You get precise control over the clickable area, and you can edit links that are already in the file instead of layering new ones on top. It is also a paid subscription, and Acrobat Reader, the free one, cannot add links at all. Plenty of people spend twenty minutes discovering that. If you add links to PDFs weekly it is worth the money. If you do it twice a year it is not.
Free online editors are free because you uploaded the document
This is the bit I actually care about. When you add links to PDF free through a browser tool, you are uploading the file to someone else's server, and the file is usually a proposal, a contract, an invoice or a client report.
Most of these companies are fine. They delete files on a timer and say so in their privacy policy. But "most" is doing a lot of work in that sentence, and you are making that call at speed, at night, for a document with someone else's commercial terms in it. I have a simple rule now: if the document has a client name or a price in it, it does not go through a free online editor. Source file or LibreOffice, every time.
If it is a public-facing PDF with nothing sensitive in it, upload away. The convenience is real.
The link that quietly does not work
Two failure modes catch people out, and both are silent.
Typing a URL into a document does not always make it clickable. Word and Google Docs usually auto-detect it, but a deck built in a design tool often exports plain text that looks blue and underlined and does absolutely nothing when clicked. Always open the exported PDF and click the link yourself before it goes anywhere.
The second one is slower. A link to a Notion page, a shared drive folder or a calendar booking page will rot. The PDF sitting in someone's downloads folder in March still points at a URL you retired in January, and nobody tells you. If you are adding a link to a PDF that will be forwarded around, point it at something you control and intend to keep alive.
For a link that jumps to a specific page inside the same document rather than out to the web, that is a different job with a different method, and I have written it up separately in hyperlink to a page in a PDF. The step-by-step for the basic version lives in how to add a hyperlink to a PDF.
A clickable link tells you nothing about whether it was clicked
So the link works and the PDF goes out. Then the file leaves your control completely. It gets downloaded, forwarded and saved to somebody's desktop, and you find out none of it.
If the reason you are adding a link is that the PDF cannot carry the explanation on its own, which is usually the reason, the link is a workaround for a document that needs a person standing next to it. There are a few ways to close that gap. DocSend and Papermark will tell you a link was opened and how long each page held attention. LiveDocument, which I build, goes at the comprehension side of it instead: you attach a recorded video walkthrough to the PDF, share the whole thing as one link rather than an attachment, and add clickable highlights that jump the video to the bit that matters, with page-level analytics underneath. It is not a PDF editor, so it will not add a hyperlink inside your file, and if what you need is a self-contained PDF that works offline with a live URL baked into it, one of the free methods above is still your answer.
Those are two different problems, and it is worth working out which one you have before you go looking for a tool.
Common questions
Can you add a link to a PDF for free without downloading software?
Yes. Free online editors including Sejda, Xodo and PDFescape all add links to a PDF online in the browser with no install. You are uploading the file to their servers to do it, so keep sensitive documents off them.
Why is my PDF link not clickable?
Usually because the URL was typed as plain text and never converted into an actual link object, or because the export flattened it. Open the finished PDF and click it. If nothing happens, add it properly in the source file and export again.
Can Adobe Acrobat Reader add links to a PDF?
No. Reader is free but it only reads, comments and fills forms. Adding or editing links needs Acrobat Pro, which is paid, or one of the free alternatives above.
Does adding a link to a PDF let me see who clicked it?
Not on its own. A PDF hyperlink is inert once the file is sent. You would need either a tracked short link on the destination or a document platform that hosts the file and reports on it.
I built LiveDocument because I was tired of sending documents into a void and guessing. If that guessing is familiar, it is at livedocument.com.
About the Author
Cameron JamesCameron is the founder of LiveDocument. He writes about sharing documents, PDFs, decks and contracts, and why pairing a video walkthrough with a document beats sending it cold.