User Guide

Online Text Comparison — Standard and Linux diff Output

Compare two versions of logs or configuration text line by line, or inspect changes in the default Linux diff output format.

How to use

1. Paste the original text on the left and the modified text on the right.
2. Select Standard or Linux diff beside the result heading. You can switch in the expanded view too; copying exports the selected format.
3. Check red deletions and green additions. Standard includes unchanged lines; Linux diff shows only changes in a/c/d format.

Input and output example

Original:
name: api
replicas: 2

Modified:
name: api
replicas: 3

  name: api
- replicas: 2
+ replicas: 3

Original:
name: api
replicas: 2

Modified:
name: api
replicas: 3

2c2
< replicas: 2
\ No newline at end of file
---
> replicas: 3
\ No newline at end of file

Background knowledge

Line Comparison

Matching unchanged lines between two versions reveals additions and deletions. An edited line appears as a deletion followed by an addition. Comparison locates differences but does not decide which version is correct.

Linux diff a/c/d addresses

2c3 means original line 2 is changed to modified line 3. Commas denote ranges, as in 2,4c3,5. 0a1 adds before the first original line; 1d0 deletes the first line. < marks original content, > modified content, and --- separates replacements.

Notes

• Standard shows separate original/modified line numbers and excludes them from copying. Linux diff uses a (add), c (change), d (delete), < original, > modified and --- separators; command addresses are copied too.
• Whitespace is compared. Standard treats CRLF and LF alike; Linux diff also compares the final newline. Browser textareas may normalize CRLF to LF. Missing final newlines show \ No newline at end of file; identical inputs produce empty Linux diff output.
• Linux diff renders the browser’s line comparison in normal format. It is not a GNU diff execution environment and offers no command options. Hunk placement for repeated lines can differ from GNU diff.
• Up to 1,000 lines per input and 200,000 characters combined. Format selection stays in page memory and is preserved when inputs are reset.

Frequently asked questions

What can I use this online tool for?

Compare two versions of logs or configuration text line by line, or inspect changes in the default Linux diff output format.

How do Standard and Linux diff output differ?

Standard includes unchanged and changed lines with separate original/modified line numbers. Linux diff shows only changes in the command’s default a/c/d format. Both color deletions red and additions green, and you can switch in the expanded view.

Are whitespace and Windows line endings compared?

Whitespace is compared. Standard treats CRLF and LF alike; Linux diff also compares the final newline. Browser textareas may normalize CRLF to LF. Missing final newlines show \ No newline at end of file; identical inputs produce empty Linux diff output. Up to 1,000 lines per input and 200,000 characters combined. Format selection stays in page memory and is preserved when inputs are reset.

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