Editing and merging

Edit text in the existing panes. PDF and Office originals stay read-only; an explicit extracted-text draft can be edited and downloaded as text. These operations do not write changes into the original PDF or Office file.

For text, paste directly into either numbered pane. The pencil controls whether editing is allowed. It does not start or stop automatic comparison.

Copy selection to right

Right-clicking selected text and copying to the other side replaces the complete aligned lines involved, not only selected characters. Difference-block arrows merge a whole block. Review the target side and use Undo if needed.

Undo / Redo

Undo and Redo cover imports, edits, merges and supported comparison settings in the current workspace. Focused form controls may retain native editing history. Downloads, system clipboard changes and audio playback cannot be undone as external actions.

Clipboard comparison

System clipboard commands require a user action and browser permission. Copying between the two panes does not need the system clipboard. Saving downloads a new file and does not overwrite a disk original.