Plagiarism Checker — How to Check for Repeated Content
Repetitive writing is a signal of weak editing, over-reliance on a source, or copy-paste habits. The free plagiarism checker on PublicSoftTools scans your writing for repeated phrases and duplicate sentences, and can compare two texts for similarity — entirely in your browser, with no data sent to any server.
Repetition Score Reference
| Score range | Rating | What it means |
|---|---|---|
| 0–15% | Low | Normal repetition. Text appears original. |
| 15–35% | Moderate | Some repeated phrasing. Review flagged sections. |
| 35%+ | High | Significant repetition. Rewrite flagged phrases. |
How to Use the Plagiarism Checker
- Open the plagiarism checker.
- Choose Repetition Check to analyse a single text, or Text Similarity to compare two texts.
- Paste your text into the input area(s).
- Read the repetition score and review the flagged phrases list.
- Rewrite or remove repeated phrases to lower the score.
What This Tool Checks vs. What It Does Not
This tool checks for repetition within your own text and similarity between two texts you provide. It does not search the internet, compare against published papers, or access any external database.
For full web-based plagiarism detection (checking against internet sources), use dedicated services like Turnitin, Copyscape, or your institution's academic integrity tool. Use this tool as a self-editing aid before final submission.
How Text Similarity Is Calculated
The similarity score uses cosine similarity of trigrams (3-word phrases) between the two texts. It measures how much of the phrasing is shared, not just individual words. Two texts discussing the same topic will naturally share some vocabulary — similarity above 40% suggests substantial shared phrasing worth reviewing.
Improving Writing Originality
Use the flagged phrases as an edit list
The tool shows the exact phrases repeated most often. Work through them one by one. For each, either vary the wording, restructure the sentence, or confirm that the repetition is intentional (e.g. a deliberate rhetorical device).
Replace repeated transitions
Common culprits are transitional phrases: "In addition", "Furthermore", "It is important to note". If these appear in the flagged list, vary them — "Moreover", "Beyond this", "Notably", "This is significant because".
Expand your subject vocabulary
If a technical term appears too often and cannot be substituted (e.g. "photosynthesis" in a biology paper), that is expected and acceptable. The checker is most useful for flagging non-technical phrases that could be varied.
Check Your Writing for Repetition
Scan for repeated phrases, duplicate sentences, and text similarity — all in your browser.
Open Plagiarism Checker