Citation Linker
Turn citation markers in PDFs into clickable DOI links or page references. Add useful navigation to research documents.
Upload Academic PDF with Bibliographies
Drag and drop papers, articles, or reports. The system will auto-link markers (e.g. [1]) with references.
About This Tool
Citation Linker is designed specifically for academic researchers. In many PDF papers, citation markers (e.g., [1], [2]) are plain text, forcing readers to scroll back and forth to the reference list at the end of the document, interrupting their focus.
This tool reads PDF text locally, uses pattern recognition to match citation markers to their corresponding reference entries, and overlays clickable PDF link annotations using DOI lookups or page-jump coordinates.
It also generates an interactive citation relationship map to visually navigate the document's reference network.
How to Use
Upload Academic PDF
Upload a PDF paper or thesis containing a bibliography/reference section.Review Citations
Inspect the citation pairs in the interactive map and manually edit or add DOI links if necessary.Inject Links
Click the activate button to overlay hyperlinks onto the PDF and download the updated document.
Use Cases
Deep Literature Reading
Pre-publication Preparation
Reference Map Analysis
Frequently Asked Questions
If a DOI cannot be found, the tool falls back to an internal "GoTo Page" action, allowing you to click the marker and jump directly to the reference page.
It supports common numeric brackets (e.g., [1], [1-3]) and author-year citations (e.g., Author et al., 202X).
No, it injects invisible Link annotations on top of the text, preserving the original layout, fonts, and styling of your document.