Text Compare

Paste two versions, choose word or character matching, and review the highlighted diff before copying or exporting it.

Use side-by-side view for longer reviews, or unified view for a compact code-review style diff.

Turn on ignore case or ignore whitespace when formatting noise is hiding the change you actually care about.

  • Compare two text versions in the browser
  • Switch between word-level and character-level diff
  • Copy or export the diff after review

How to use Text Compare

Use this flow to compare an original and revised text, check changed wording, review pasted code, or verify a document edit before handoff.

  1. 1

    Add original and modified text

    Paste the first version on the left and the changed version on the right, or drop a .txt or .md file into either side.

  2. 2

    Choose the diff settings

    Select side-by-side or unified view, choose word-level or character-level matching, and decide whether case or whitespace should be ignored before reviewing the diff result.

  3. 3

    Copy or export the result

    Review added and removed segments, swap the sides if needed, then copy the diff text or export it as a text file for your notes or review workflow.

Two-panel text comparison

Original and modified inputs stay visible above the result, making it easier to confirm which version is being checked.

Side-by-side and unified diff

Use a split layout for longer edits or switch to unified diff when you want changes in a single readable stream.

Browser-based comparison

The diff is calculated in the browser, and the current texts can be kept in local storage on the same device.

Word and character matching

Word-level comparison is useful for prose. Character-level comparison helps when a small typo, symbol, variable name, or punctuation change matters.

Ignore case or whitespace

Use the settings panel to ignore capitalization or spacing when you need to focus on wording changes instead of formatting changes.

Copy and export options

Copy the diff to the clipboard or export it as a text file with added and removed lines marked for later review.

Text Compare privacy and processing

Text Compare processes the diff in your browser and can keep the current two text fields in local storage. Use Clear All when you do not want the comparison to remain on this device.

Processing Browser

Text Compare calculates the diff in the browser, with controls for word-level or character-level comparison, case handling, whitespace handling, and view layout.

Storage Local

Text Compare stores the current original and modified text in local browser storage so the same device can reopen the comparison.

Text Compare account access

Text Compare does not require sign-in for pasting text, comparing changes, swapping sides, copying the diff, or exporting the diff file.

Before You Use Text Compare

Diff tools are best when both sides are clean and comparable. Check these details before using the result for review or approval.

Privacy

The comparison runs in the browser, but the current texts may remain in local storage on the same device.

Clear the tool after checking contracts, source code, credentials, customer messages, or private drafts on a shared computer.

Accuracy

Whitespace, capitalization, and line breaks can create noisy diffs if those settings do not match your review goal.

Use character-level matching for tiny edits and word-level matching for prose, then read the source text before approving a change.

Compatibility

Pasted rich text can carry hidden spacing, smart punctuation, or line break changes that look larger than the real edit.

Dropped files should be plain text, `.txt`, or `.md`. Binary files and formatted documents should be converted to text first.

Output

The copied or exported diff is a review aid, not a replacement for checking the final text in its destination.

Keep both source versions until the accepted changes have been applied where they belong.

Limits

Text Compare runs in the browser and can compare pasted text or dropped .txt and .md files. Very large inputs may slow diff rendering, copying, or export.

Questions about Text Compare

What can I compare with Text Compare?

Use it for edited copy, code snippets, markdown, emails, notes, release text, configuration fragments, and plain text from `.txt` or `.md` files.

Should I use word-level or character-level diff?

Use word-level diff for paragraphs and writing. Use character-level diff when tiny changes matter, such as punctuation, variables, IDs, spelling, or short code fragments.

Does Text Compare require an account?

No. You can paste text, compare it, change settings, copy the diff, export the diff, and clear the fields without signing in.

Can I ignore whitespace or capitalization?

Yes. The settings panel includes Ignore Case and Ignore Whitespace options so formatting noise does not hide the change you need to review.

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