Organize and Read PDF References Locally

refern can show PDFs beside image references and open them in its reader. Enable the appropriate file types for your workspace first. Images and videos are the default categories; a document outside that policy will not appear simply because it sits in a content folder.

Enable the documents you need

Edit the workspace and inspect File types shown. Enable Documents, add .pdf as a custom extension, or choose all files according to the collection you want indexed. Save the change and allow the workspace scan and thumbnail processing to finish.

Indexed PDFs can receive a first-page grid preview. A cover page can help recognition, but it is not a preview of every page. If a document remains an icon after processing, check whether it opens in a separate reader before changing the original.

Organize by project and purpose

Keep a brief, a research paper, and a style guide near the images they support. Add a project tag plus a purpose tag such as lighting or materials. Record the document title, creator, source, and useful page numbers in notes.

For example, a lighting study could keep a PDF with a note saying "pages 12-14: window-light diagrams" and tag it alongside photographs from the same exercise. This is an example of manual organization, not automatic document interpretation.

Use the right search

Use ext:pdf to find indexed PDF entries. Combine it with a tag or filename search to narrow the library. The library does not index the full text of every PDF as a collection-wide document search.

Open a PDF for continuous scrolling, page navigation, zoom, text search, selection/copy, and printing where available. Text search inside the reader needs embedded text. Scanned image-only pages are not given an OCR text layer by this viewer.

Viewer rotation changes the reading view; it does not rewrite the original document. Use a document editor if you need to save page edits.

Handle a missing or unreadable PDF

Check the file policy, configured content root, drive availability, and scan state. For a damaged or protected document, try its normal reader and preserve the original while investigating. Indexing an entry does not guarantee its contents can be rendered.

Other optional file categories are not automatically previewed like PDFs. A design source, font, or 3D file may be a searchable generic entry with an icon. See the mixed asset-library workflow for keeping these boundaries clear.