Overleaf enables you to go from a location in the typeset PDF to the corresponding location in your LaTeX source code, and vice-versa. Note: This feature will not work if your project’s main
.tex file is stored inside a folder—i.e., it must be placed at the top (root) level of your project.
You can either:
If you don’t see those arrows, or double-clicking the PDF doesn’t work, you need to make sure your project’s PDF viewer is set to “Built-in” and not “Native”. Here is a short video showing how to set your project’s PDF viewer and demonstrating Overleaf’s source/PDF synchronization features.
Overleaf’s “jump to source code location” and “jump to PDF location” capability is implemented using SyncTeX, a standard feature that is incorporated in all TeX engines. Readers interested in a brief introduction to SyncTeX can find out more in this Overleaf article.