Text Compare (Diff)

About this tool

Compare two blocks of text and quickly see whether they match, along with line and character difference counts. Paste the second text after a line containing only "==="

Example

Input: hello === hello

Output: ✓ The two texts are IDENTICAL

How to use

Paste or type your text into the box above, then read or copy the result. Everything runs privately in your browser, your text is never uploaded to a server.

How to use this tool

1. Paste the first text block into the input area.
2. Add a line with only === after the first text.
3. Paste the second text block below that separator line.
4. Check the match result and review the line and character difference counts.

Step by step, what happens

1. The tool reads everything above the line containing only === as the first text.
2. It reads everything below that separator as the second text.
3. It compares the two blocks to see whether they are identical.
4. It calculates simple difference stats so you can spot how far apart the texts are.
5. It shows the result instantly, so you can fix and compare again right away.

Worked example

Suppose you want to check whether two copied notes are exactly the same before sharing them.

Input: server ready retry later === server ready retry later

1. The tool treats the two lines above === as the first text and the two lines below it as the second text.
2. It compares both blocks line by line and character by character for exact equality.
3. Because every line matches, the tool reports that the texts are identical and the difference counts are zero.

Tips and common mistakes

• Make sure the separator line contains only ===, with no extra spaces or text on that line.
• Keep an eye on hidden differences like extra spaces or a missing final newline, since they can make two texts fail to match.
• If you are comparing multi-line content, paste the full blocks exactly as they should appear, including blank lines.
• When the result does not match, change one side and compare again instead of guessing where the difference is.

Frequently asked questions