File search guides for Windows and Mac

Practical, no-fluff answers to the file-finding problems everyone has.

• Windows Search alternative: search inside files by meaning
  What Windows Search and File Explorer do well, where literal matching stops, and what to use when you need more.
• Spotlight alternative for searching inside files on Mac
  What Spotlight and Finder already search, the cases they miss, and when a different kind of search helps.
• Windows search not finding files or file contents
  The usual causes, from indexing options to file types, and how to check each one in a few minutes.
• Spotlight not finding files on Mac
  Why Spotlight misses documents you know exist, and the checks that bring them back.
• How to search multiple PDF files at once
  Search the text inside many PDFs in one go on Windows and Mac, and what built-in search cannot read.
• How to search scanned PDFs and text in screenshots
  What OCR is, what your computer can read from one picture, and how to search a whole folder of scans.
• How to search inside Excel files and across spreadsheets
  Find a value inside one workbook, then find which of many spreadsheets contains it.
• How to find an invoice or contract by what it says
  Search a reference number, a supplier or a clause instead of a file name, including in scans.
• Windows 11 semantic search without a Copilot+ PC
  Windows only ships meaning-based search on Copilot+ machines. How to check whether yours qualifies, and what to do if it does not.
• How to search inside files on Mac
  What Spotlight indexes, how to query it with mdfind, and the one thing literal matching cannot do.
• How to search inside files on Windows
  Three ways to search file contents, the built-in box, Enhanced indexing, and searching by meaning.
• Windows search not finding text inside PDFs
  Two different causes with two different fixes, and a ten-second test that tells you which one you have.
• How to search files written in another language
  Why keyword search only finds the language you type in, and how one query can reach your whole disk.
• How to find a file when you forgot its name
  A practical checklist: date sorting, Explorer filters, content search, and describing the file to an AI.
• What is semantic file search?
  Plain-English guide to meaning-based search, how it works and what to look for in a tool.
• How to find photos by describing them
  Type what's in the picture and jump straight to it, locally, with OCR for screenshots and scans.