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PDFs

Find the page. Not just the PDF.

You remember the argument. The diagram. The table. The section that mattered.

You don't remember which report it was in. Or page 47 of which file. Shelf turns supported PDFs into searchable memory.

Free. macOS 14 and later, Apple Silicon and Intel. No account.

The document path: the file is only the first step, and the least useful one.

A filename isn't a memory.

report-final-v3.pdf tells you almost nothing about why you kept it.

What matters is what was inside. Shelf helps make that content retrievable.

  • A figure you can describe but not cite
  • A paragraph that changed your mind
  • A table you compared against something else
  • A definition you keep wanting to quote correctly

Remember the idea. Find the page.

Search the meaning you remember. Return to the page where the evidence lived.

Keep the source close to the memory, so quoting it doesn't turn into an afternoon of scrolling.

What does the retrieval work.

Nothing here is document management. It's the same memory engine, pointed at long files.

Documents can contain confidential or personal material.

Contracts, salaries, medical letters, unpublished research, other people's data. Shelf processes supported PDFs on your Mac, which is the only honest way to make a document library searchable.

Nothing is sent to a server to be indexed, and there's no account holding your files.

Documents are useful when the useful part can come back.

Find the part that mattered.

Keep the report. Search the idea. Arrive on the page where the evidence actually lives.

Next thought

Research doesn't get lost in one moment. It gets lost across fifty files, one week at a time.

How to organize research

Shelf V3 is out now

Shelf V3 is the current build. Shelf does not use automatic updates, so download the latest build here and install it over your current version.

This is intentional. Shelf is built around a local-first, privacy-focused philosophy. An automatic updater requires additional background processes, network connections, update infrastructure, and another system with permission to modify the app. We prefer to keep Shelf’s network footprint and background activity as small as possible.

Manual updates keep the process explicit: Shelf only checks the internet when a feature actually needs it, and you decide when a new version is downloaded and installed.

Download the latest version →Version 3.0 · macOS 14+