Private Text Compare
Local only

Private developer utility

Private Text Compare

Compare text without sending it anywhere. See every line and word that changed.

No uploads · No account · No tracking

Text comparison workspace

Comparison options

Diff

Comparison result

Add text above and press Compare to see the differences.

Add text above and press Compare to see the differences.

Workflow

How it works

  1. Paste both versions

    Paste the original text and the changed version into the two editors.

  2. Choose comparison options

    Choose whether case or surrounding whitespace should be ignored.

  3. Review and export locally

    Compare the versions, review line and word changes, then optionally copy the unified diff or download the local .diff or .txt output.

Privacy boundary

Private by design

The text you compare is processed locally in your browser. Pasted Original and Changed text is not uploaded to a Private Text Compare backend.

Compared text, comparison results, option snapshots, and generated export content remain transient for the current page session and clear on refresh. Only the existing dark/light theme preference may persist locally.

Copy and download happen only after explicit user actions. Application clipboard access is write-only, and downloads are created locally from the generated output.

Common uses

Useful for quick before-and-after checks

  • Writing and editing revisions
  • Essays, reports, and notes
  • Code and configuration snippets
  • AI-generated rewrite comparisons
  • Emails, policies, and other short business text

Reference

Frequently asked questions

Is my text uploaded or stored?

No. The compared Original and Changed text is processed locally in the browser, is not uploaded to a Private Text Compare backend, and clears when the page is refreshed.

Do I need an account?

No. The current tool works without an account or sign-in.

What does “Ignore case” do?

It treats case-only differences such as Hello and hello as unchanged when you compare.

What does “Ignore surrounding whitespace” do?

It ignores leading and trailing whitespace on each line. Whitespace inside the line remains meaningful.

Can I save or export my comparison?

You can copy the unified diff, download a local .diff file, or download a plain-text report. The site itself does not retain comparison history.

Can I compare files directly?

Not currently. Direct file import is not available, so paste the text you want to compare into the Original and Changed editors.