Text diff comparison
Type or paste text, or load 1 corresponding UTF-8 text file into each field to check additions, deletions, and rewrites. Apply the changes you need to either side, then save the comparison conditions and results as a PDF.
What you can do
Check text differences
Compare the original and changed text using line numbers, colors, and character markers.
Apply changes and export to PDF
Apply each change to either text. You can compile the current settings and comparison results into a PDF.
How to use
Enter the text to compare
Type or paste the original text on the left and the changed text on the right. You can also load a text file into each field.
Check differences
Select “Check differences”. You can usually use the tool without changing the comparison settings.
Review changes
Jump to the relevant lines from the change list, and apply them to the other side if needed. Edits after comparison are automatically compared again.
Create and save a PDF
Create a report with “Export PDF”, then download it using the save button that appears.
When to use it
Compare drafts before and after revision
Check rewritten, added, and deleted text against the original draft.
Check changes to settings or clauses
Check character changes in code, configuration files, terms, and other text. This feature does not automatically judge the meaning or validity of the content.
Reading differences and applied changes
Additions, deletions, and replacements
The result counts are the numbers of compared lines classified as added, removed, changed, or unchanged. Consecutive changes are grouped into one change block, so these counts differ from character counts or the number of change blocks.
Whitespace and newline differences
Even if the text looks similar, whitespace, full-width or half-width characters, and a final newline can differ. Ignoring whitespace is not the same as how the presence or absence of newlines is handled.
Where changes are applied
Replace the range of a change block with the content from the opposite side. The on-screen text changes, and the original loaded file is not overwritten.
What the PDF includes
The report includes comparison settings, input names, and line data. It presents the original and changed text so they can be distinguished, rather than using a screenshot of the screen.
Frequently asked questions
Why are there differences when the text looks the same?
Whitespace, full-width or half-width characters, or a final newline may differ. You can ignore whitespace or letter case as needed.
Can I save comparison results as a PDF?
Export a PDF while comparison results are available, then save it once it is created. Changing the text or comparison settings removes the previous PDF from the files available to save.
Can I compare with one side empty?
Yes. If one side has content, it can all be compared as additions or deletions. You cannot start a comparison when both sides are empty.
Does ignoring specified strings use regular expressions?
No. The exact strings you add are excluded from the comparison. Differences are calculated using that setting without deleting anything from the original input text.
File handling
- Input
- Type or paste text, or use supported UTF-8 text files. One file per field.
- Results
- The on-screen comparison, text after applying changes, and comparison PDF. Original files are not overwritten.