Text utility
Use this text diff checker to compare two versions of writing, website copy, lists, configuration files, or code. See additions, removals, and changed lines without uploading either version.
Comparison status
ReadyPaste an original and changed version to begin.Text versions
Everything stays in this browser. HTML and script-like text is displayed as text, never run.
Results
Paste both versions of text, then select Compare text.
Text diff basics
A text diff compares two versions line by line. Added lines are labelled with a plus, removed lines with a minus, and nearby replacement lines are shown together as changes. Unchanged context stays visible so you can understand the edit without being overwhelmed.
It is useful for checking website copy, code, lists, release notes, and configuration files before you publish or share them.
Comparison options
Ignoring case can help when capitalisation is not important. Ignoring leading and trailing whitespace can reduce noise in formatted text, and ignoring blank lines is useful when spacing is incidental.
The comparison runs only in your browser. Neither version is uploaded, stored, or executed, including text that contains HTML or scripts.
FAQ
It compares two text versions and marks the lines that were added, removed, or changed.
Yes. Whitespace is preserved in the output, so the checker is suitable for code, lists, configuration files, and ordinary writing.
No. The comparison happens locally in your browser and the tool does not send or store either input.
Yes. Use the case, surrounding whitespace, and blank-line options before comparing.
Added lines appear in the updated version, while removed lines only appear in the original. A changed line is presented as its removed and added versions together.
Each input supports up to 100,000 characters and 2,000 lines to keep the comparison responsive.
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