pdfcosmos

Add Links to PDF

Make any part of your PDF clickable. Link to a website or another page, right in your browser.

Free, fast, and privacy-first.

Add the PDF you want to add links to

or drag & drop a file here

PDF onlyone fileup to 100 MB

Add Links turns any text or area of your PDF into a genuine clickable link. Draw a box over the words or image you want to make clickable, then point it at a web address, an email, or another page in the same file. Unlike highlighting, drawing, or adding text — which are all burned onto the page — a link is written as a real /Link annotation, an invisible hotspot laid over your existing content. Nothing is drawn or moved: the words and images under the link look exactly as before, they just become clickable.

You can add two kinds: an external link (a bare address like example.com becomes https://example.com, and [email protected] becomes a mailto: link) or an internal jump to another page in the same PDF — handy for a table of contents. Because they're standard link annotations, they work in Acrobat, Preview, Chrome, and every other viewer, not just underlined text that looks like a link. It all runs in your browser with pdf.js and pdf-lib, so your file never leaves your device. To strip links back out later, use Remove Links.

  • Real link annotations

    Clickable in Acrobat, Preview, Chrome, and any viewer — not just underlined text.

  • The page stays untouched

    Links are invisible hotspots over your content; nothing is drawn or moved.

  • Web, email, or another page

    Link to a URL, a mailto: address, or an internal jump to any page in the file.

  • Nothing is uploaded

    Links are added in your browser with pdf-lib. Your file never leaves your device.

  1. Add your PDF

    Click “Select PDF”, or drag a single file into the upload area. Any PDF works, even a flat scan.

  2. Draw a link

    Click “Add link”, drag the box over the text or area you want to make clickable, then enter a web address, or choose a page to jump to.

  3. Download

    Download your linked PDF. The links are real, clickable hotspots and the page itself is unchanged.

Frequently asked questions

Are my PDF files uploaded to a server?
No. Your PDF is rendered and edited entirely in your browser with pdf.js and pdf-lib. The file never leaves your device. You can confirm it in your browser's Network tab: no file data is sent.
What kinds of links can I add?
Two kinds: an external link to a website or email address (a bare address like example.com becomes https://example.com, and [email protected] becomes a mailto: link), or an internal jump to another page in the same PDF.
Are the links real and clickable?
Yes. Each link is added as a genuine link annotation (the same kind a PDF normally uses), so it's clickable in Acrobat, Preview, Chrome, and other viewers. It is not just underlined text.
Will it change how my PDF looks?
No. Links are added as invisible hotspots over the existing content, so nothing is drawn onto the page. The words or image under a link stay exactly as they were. They just become clickable.
Can I remove links again later?
Yes. Use our Remove Links tool to strip every clickable link from a PDF while keeping your comments, highlights, and form fields.
Is Add Links free?
Yes, it's completely free to use, with no sign-up and nothing to install.