Text Diff & Compare
Line-by-line diff of two texts with additions, removals, and changes
Original
Modified
Diff two pieces of text without firing up an IDE
Sometimes the thing you need to compare isn't JSON or code — it's a log snippet, a config file, an essay, or two versions of an email. A line-by-line diff shows you additions, removals, and modifications side by side, with options to ignore whitespace and case so you only see meaningful differences.
Use the comparer when you need to
Compare two log snippets
Paste before-and-after logs to find the line that changed when a deploy went sideways.
Diff prose or release notes
See exactly what changed between two drafts without running git diff or opening an editor.
Verify a copy-paste change
Confirm that the modified version differs only in the way you intended, not in extra invisible whitespace.
How to diff text quickly
- 1
Paste or upload the original text on the left.
- 2
Paste or upload the modified text on the right.
- 3
Toggle ignore whitespace or ignore case if needed, then click Compare.
Keep going
Diff JSON instead
Pick the JSON-aware comparer when both inputs are structured documents.
Format JSON before diffing
Pretty-print both sides first so the diff isn't dominated by indentation noise.
Minify before diffing
Strip whitespace from both inputs to focus the diff on real changes.
Decode encoded inputs
Decode Base64 first when the diff target is encoded text.
Common text-diff workflows
Paste both into the editor to find the entry that's missing or different between environments.
Confirm the new config differs from the old only in the lines you intended to change.
See exactly which sentences changed between drafts of an article or release note.
Related Tools
Frequently Asked Questions
JSON Compare parses JSON and diffs the structure. This tool treats input as plain text lines — ideal for logs, configs, prose, or any non-JSON content.
When one line was removed and another added at the same logical position, they are grouped as a modification (amber) so you can see a replacement at a glance.
They change how lines are compared: whitespace mode collapses runs of spaces and trims ends before matching; ignore case lowercases text for comparison only — the original text is still shown in the output.
Yes. Use the Upload button above each editor to load a text file into Original or Modified, then click Compare.