Paste two pieces of text into the boxes above and press Compare texts to get an instant similarity score, word counts for each text, and a list of the exact phrases they share. The comparison runs entirely in your browser — nothing is uploaded or stored, and the tool is honest about what it can and cannot detect: it compares the two texts you paste, it does not search the internet.
How do I compare two texts?
- Paste the first text into the First text box — for example your article, assignment or product description.
- Paste the second text into the Second text box — for example a source you suspect it was copied from, or your own earlier draft.
- Press Compare texts. Read the similarity score, then scroll through the matched phrases.
- Use Clear to empty both boxes and start a new comparison.
How is the similarity score calculated?
The checker normalises both texts (lowercase, punctuation removed) and breaks them into overlapping 5-word sequences, called shingles. It then measures how many shingles appear in both texts compared to the total number of unique shingles — the Jaccard similarity. A smaller weight is given to single-word overlap so that texts sharing only common words like “the”, “and” or “Pakistan” do not score highly just for using everyday vocabulary. The result is shown as a percentage from 0% (nothing in common) to 100% (identical texts).
On top of the score, the tool finds the longest shared phrases of six words or more and lists them. These matched phrases are usually the most useful part of the result: a single copied paragraph shows up clearly even when the overall score is diluted by surrounding original writing. Very short texts (under about 50 words each) can produce jumpy scores, so treat small samples as a rough hint rather than a verdict.
When do Pakistani students, writers and businesses use it?
University students in Lahore, Karachi and Islamabad use text comparison to check their assignments against sources before submitting through Turnitin-style systems — not to trick the software, but to catch accidental copying they missed while paraphrasing. Freelance writers and bloggers compare a new draft against their own published posts to avoid repeating whole paragraphs across articles, which can hurt rankings. Small businesses compare supplier-provided product descriptions against a competitor's site before publishing them on their own store, and teachers compare two students' submissions when the answers look suspiciously alike.
Content agencies sometimes compare an old version of a page with a rewritten one to confirm the rewrite actually changed enough of the wording. In all these cases the question is the same — “how much of text A appears inside text B?” — and a side-by-side comparison answers it faster than reading both manually.
What this checker cannot do
This is a comparison tool, not a plagiarism detection service, and the difference matters. It only compares the two texts you paste. It cannot search Google, books, journals or the web to find where copied text came from. A score of 0% means the two pasted texts do not overlap — it does not certify that a text is original or free of plagiarism from sources you did not paste. Heavy paraphrasing (rewriting a paragraph in different words) will also score low even though the ideas were taken, because the tool compares wording, not meaning. For academic submissions, always follow your institution's own originality requirements rather than relying on any free comparison tool.
Frequently asked questions
Is this a real plagiarism detector?
It is a text similarity checker: it accurately compares the two texts you paste, but it cannot search the web or external databases. Treat it as a comparison helper, not a plagiarism verdict.
What is a good similarity score?
There is no universal threshold. Below about 15% usually means only common phrases overlap. Above 40% deserves a close look at the matched phrases. Context matters — quoted material and references legitimately raise the score.
Can it detect paraphrased or translated text?
No. If the wording was rewritten or translated, the tool will report low similarity even though the ideas were copied. It compares exact wording, not meaning.
Is my text uploaded anywhere?
No. The comparison runs in your browser with JavaScript. Your text never leaves your device and is not stored, logged or sent to any server.
How long can the texts be?
Each box accepts up to about 30,000 characters, roughly 5,000 words — enough for full articles, essays and chapters. Longer pastes are trimmed with a warning.
Why is the score high for two unrelated texts?
Very short texts, or texts full of standard phrases (contracts, terms and conditions, boilerplate disclaimers), share a lot of common shingles. Compare longer, natural passages for a meaningful score.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested