# Text difference checker

> See what changed between two pieces of text.

[Open tool](https://www.toolcabana.com/ja/text-diff) · [テキスト・文章](https://www.toolcabana.com/ja/category/text-and-writing)

Tool ID: text-diff. Requested language: ja. Description language: en. Complete guide translation: no; untranslated sections use English.

## Overview (en)

Text Difference Checker compares your original text with a second version and highlights what changed, with added text in green and removed text in red. You can compare by words, lines or characters. Ignore whitespace-only changes stops spacing and line-edge indentation from being flagged, and the copyable result marks additions with + and removals with -.

## Supported tasks (en)

Shows added and removed text. Turn on Ignore whitespace-only changes when spacing between words or indentation at the edges of a line should not count as an edit.

## Steps (en)

1. Paste the original text, then the comparison text.
2. Choose words, lines or characters. Turn on Ignore whitespace-only changes when spacing should not count.
3. Run text difference checker and read the added and removed text.

## Settings

- Comparison text (en; key: comparison; type: textarea)
- Compare by (en; key: level; type: select): words [en], lines [en], characters [en]
- Ignore whitespace-only changes (en; key: ignoreWhitespace; type: checkbox). Word comparison treats spacing between words as the same. Line comparison ignores leading and trailing spaces on each line. Character comparison collapses spaces and tabs before comparing. (en)

## Limitations (en)

Text operations generally accept up to 2,000,000 characters. Individual parsers, generators and formulas apply additional limits shown by their controls.

## Example input

```text
Hello world.
A second line.
Café, İstanbul, 日本語, and 👨‍👩‍👧‍👦.
```

## Privacy and connections (en)

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

## Questions (en)

### Should I compare text by words, lines or characters?

Words is the default and suits edited prose. Lines works well for lists, code or configuration where each line is a unit. Characters reveals the smallest changes, such as a single corrected letter or punctuation mark.

### How do I ignore spacing differences when comparing two texts?

Turn on Ignore whitespace-only changes. Word comparison then treats spacing between words as equal, line comparison ignores leading and trailing spaces on each line, and character comparison collapses spaces and tabs before comparing.

### Can I copy the differences as plain text?

Yes. The text output lists each segment with a + for added text, a - for removed text and a space for unchanged text, so you can copy or download the comparison as a record of the changes.

### Where is my input processed?

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

### What are the input limits?

Text operations generally accept up to 2,000,000 characters. Individual parsers, generators and formulas apply additional limits shown by their controls.

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- [Reverse text](https://www.toolcabana.com/ja/reverse-text)
- [Find and replace text](https://www.toolcabana.com/ja/replace-text)
- [Bold Unicode text](https://www.toolcabana.com/ja/bold-text)
- [Italic Unicode text](https://www.toolcabana.com/ja/italic-text)