A new line appears in the modified text.
PRACTICAL TOOL GUIDE
How to Compare Two Texts with a Diff Checker
Compare drafts, code or logs side by side; understand added lines, removed lines, whitespace and sharing privacy.
Paste the original and modified text into a diff checker. Review added and removed lines, switch to side-by-side view for paired changes, and expand unchanged context. Keep whitespace comparison enabled when indentation matters; the result identifies textual changes, not whether the change is correct.
How to use the tool
- Prepare plain textPaste text from two comparable versions. PDFs and Word formatting are not compared directly.
- Inspect changed linesUse line numbers and unified or side-by-side view to locate changes.Open the relevant tool →
- Choose whitespace behaviorIgnore extra whitespace only if leading, trailing and repeated whitespace are irrelevant. In code, indentation may be meaningful.
- Review before sharingComparison is local. Share sends the submitted text to a server-stored snapshot, so remove secrets and confidential information first.
How to interpret the output
A line from the original no longer matches.
Normalized line endings are treated equally.
Frequently asked questions
Why are there added and removed lines for one edit?
Replacing a line removes the old version and adds the new version.
Does this validate JSON?
No. Use the JSON formatter and validator for syntax validation before or after comparing.
Why is a large changed block simplified?
The bounded comparison limits work for extensively different documents and retains matching start and end sections.