Select two files or two folders in File Explorer, right-click, and choose Send to ▸ Diffoniq: Diffoniq starts and compares them. Nothing is installed into Explorer for this. The entry is an ordinary shortcut in your Send to folder, and Explorer hands the selected items to it exactly as it hands them to any other program listed there.
Options ▸ Show in Explorer’s “Send to” Menu creates the shortcut — the menu item then shows a check mark — or removes it again. The choice is yours alone: the setup never adds the entry by itself, and it is kept per Windows user. The shortcut starts the Diffoniq that created it. If that copy moves (a portable ZIP, say), the next start of Diffoniq with the option on points the shortcut at itself again; a shortcut that still starts another working copy is left alone.
Uninstalling Diffoniq removes the shortcut of the user who runs the uninstall. Other users of the same PC who turned the entry on keep theirs; Windows offers to delete such a shortcut the next time it is used.
| Selection | What Diffoniq does |
|---|---|
| Two files, or two folders | Compares them. The one that comes first by name lands on the left,
the way Explorer sorts by name (File2 before
File10): in a list sorted by name, the upper one —
whichever of the two you right-click. Swap
Sides turns them around. |
| One file or folder | Opens the selection dialog with it on the left, waiting for the other side. |
| A file and a folder | Compares the file with the file of the same name inside the folder,
as diff does. Without such a file, both are shown as they
are. |
| An archive and a folder | Compares the archive’s contents with the folder, like two folders. |
| More than two items | Says so first, naming the two it compares and the ones left out, then compares the first two. |
The same rules apply to paths on the
command line; two items dropped on the Diffoniq
window are paired the same way. Only the order by name is particular to
Send to (the shortcut passes --send-to): on the command
line the first path is always the left one.
For entries directly in the right-click menu — including comparing two items from different folders — see Explorer’s Context Menu.