Compare Two Texts or Strings and See Every Difference

They are the same operation on this page. Comparing text usually means checking documents or paragraphs, while comparing strings usually means checking short values such as IDs, tokens, hashes, or config entries. This tool handles both, and word mode is normally the better choice for short strings.

Paste the first string into the left panel and the second into the right panel, switch to word mode, then press Compare. Differing words are highlighted, and the added and removed totals tell you how much changed.

Paste both strings, leave Ignore case and Ignore whitespace turned off, and compare. If the result shows zero additions and zero removals with no highlighting, the two strings are an exact match. For a looser equality check, turn on Ignore case to match apart from capitalisation, or Ignore whitespace to match apart from spacing.

Line mode compares whole lines and is best for documents, logs, and code, where an edited line is reported as one removal plus one addition. Word mode compares individual words and is best for sentences and short strings, where you want to see precisely which words changed.

Yes, by pasting their contents. There is no file picker, so open each .txt file, select all, and paste it into the matching panel. Line mode is usually the right setting for file comparison.

Not directly. This is a plain-text comparer, so you would need to copy the text out of each document and paste it in. Formatting, tracked changes, images, and layout are not compared, so this is a good way to find wording changes but not a substitute for a document comparison feature inside a word processor.

Yes, as text. Copy one column or range into the left panel and the other into the right panel, then use line mode so each value is compared as its own line. Cell formulas, formatting, and structure are not compared.

Desktop tools such as a code editor diff or a merge tool give you side-by-side aligned views, syntax awareness, and the ability to merge changes. This text compare site is a fast browser-based alternative for when you just need to see what changed and do not want to install anything or open an editor. Because it is a website, it works the same on any machine you sign in to, and it produces a unified inline diff rather than an aligned side-by-side view.

Yes. Turn on Ignore case before comparing and capitalisation differences will no longer be reported as changes.

Yes. Turn on Ignore whitespace to collapse repeated spaces and tabs and trim leading indentation. This is useful after reformatting code or re-wrapping a paragraph, when the words are unchanged but the spacing is not.

No. The comparison is literal and deterministic. It matches characters and words, not meaning, so two sentences that say the same thing in different words will be reported as different. That predictability is what makes it reliable for code and data.

No. It only compares the two texts you paste in and never searches the internet or any database of documents. If you already have both texts and want to see how much they overlap, this will show you. If you need to find out whether a text exists somewhere online, you need a plagiarism service instead.

No. The whole comparison runs locally in your browser, so nothing you paste is transmitted or stored. That makes it safe to use with contract text, customer records, credentials, or production data.

Yes. Copy the comparison as plain text with + and - prefixes for pasting into a ticket or message, or download it as a .txt file to keep as a record.

Because position is part of the comparison. When a block moves, the tool sees it missing from its original location and present in a new one, so it reports a removal and an addition rather than a single move. Switching to word mode sometimes makes the relationship easier to read.