DEV
Free Developer tool

Text Diff Checker

Compare two texts line by line.

Private by design

The working input is processed in this browser and is not stored by 247888.

About this tool

What does Text Diff Checker do?

Compare two texts line by line. The workspace keeps the input and result together, making it easy to check the change before you use it elsewhere.

For example, you can compare two texts line by line while debugging an API request or deployment.

What you can control

Text Diff Checker gives you direct control over changed text.

How to use Text Diff Checker

  1. 1

    Paste or type the original text you want to work with.

  2. 2

    Set changed text to match the result you need.

  3. 3

    Run Text Diff Checker, review the output, then copy or download it where available.

Tips for a better result

  • Keep the source original text beside the Text Diff Checker output so you can check the transformation.
  • Change one setting at a time—especially changed text—so differences are easier to compare.
  • Treat decoded or formatted output as data, not proof that the source is safe or authentic.

Frequently asked questions

Is my input private when I use Text Diff Checker?+

Text Diff Checker handles the pasted value locally in this browser. Avoid using real production secrets on an untrusted or shared device.

What should I check after using Text Diff Checker?+

Treat decoded or formatted output as data, not proof that the source is safe or authentic.

Try “make image smaller”, “jpg into pdf”, “pretty json” or “count my words”.