Trawler user manual

Trawler finds files you don't need — exact copies, near-copies, and whatever is quietly eating your drive — and helps you get rid of them safely.

New here? Read Your first scan. Something not working? Try the FAQ or When something goes wrong.

The sixty-second version

  1. Scan. Pick where to look, what kind of files, and how thorough to be. Trawler walks the folders and compares what it finds.
  2. Review. Results arrive in tabs: exact Duplicates, your largest files, and folder sizes so you can see where the space went. Similar files is separate — images, music, videos and documents that resemble each other without being identical.
  3. Tick what you don't want. Nothing is ever removed because Trawler thinks it should be.
  4. Process. Choose what happens: archive, recycle, delete, move to another drive, or merge duplicate copies into one. Most of these can be undone.

The default action is Archive to ZIP, because it frees the space and leaves you a way back.

Start here

If you want to… Read
Run your first scan Your first scan
Understand the results Reading results
Free up space on a full drive Processing
Find duplicate images Similar images
Find duplicate music Similar audio
Undo something What can be undone
Know what the free version limits Free and full versions

Everything else

Setting up a scanYour first scan · Where to look · What kind of files · How thorough · While it's running

Similar filesOverview · Images · Audio · Video · Documents · Reviewing results

Results and processingReading results · Choosing what to remove · Processing · Sessions

UndoingWhat can be undone · From an archive · Files that were moved · An interrupted hardlink job

ReferenceSettings · Free and full versions · Big scans · When something goes wrong · Glossary

Three things worth knowing before you start

Nothing is removed without you. Trawler never deletes, moves or archives anything on its own. You tick what goes; it acts only when you press the button on the last step.

Similar files are advice, not verdicts. Two images that look alike are not the same image. Trawler will never pre-tick them for you. See Reviewing similar results.

Protected paths keep folders out of scans. Nothing on that list is looked at, so nothing there can be ticked by accident. Windows and Program Files are protected out of the box, and the list is yours to change. See Settings.