What is burstiness in AI text detection?

Burstiness refers to variations in sentence length and structure across a piece of writing. Human writers naturally vary between short punchy sentences and longer descriptive clauses, whereas AI models tend to produce uniform, evenly spaced sentences with low burstiness.

What is perplexity in AI writing?

Perplexity is a measure of randomness or unpredictability in text. High perplexity indicates human-like creative word choices, while low perplexity means the text followed highly probable statistical word predictions typical of LLMs like ChatGPT.

How does Rozkit AI Detector work?

Rozkit analyzes your input text locally in your browser by evaluating structural entropy, repetitive transition markers, sentence burstiness, and vocabulary distribution to determine if content was likely drafted by AI.

AI Text Detector & ChatGPT Checker — Detect AI & Check Burstiness Free

Paste your text below

Words: 0 | Characters: 0 100+ words recommended

Click Analyze to check your text for AI-generated patterns.

Upload an image

Click or drag and drop to upload an image

JPG, PNG, WEBP · Maximum 8MB

Clicking Analyze runs OCR first. The AI-generated and human-written percentages appear only after OCR completes.

Upload a document

Click or drag and drop to upload a file

TXT, MD, CSV, JSON · Maximum 10MB

Results appear only after the file's actual text has been extracted locally in your browser.

About

The Image Scanner follows an OCR-first process. Selecting an image only shows a preview. No score is generated until OCR has successfully completed.

When an image contains AI-generated text, the OCR-extracted text is analyzed for formal, template-style, and AI-related phrasing. If known AI-tool metadata is found, the AI signal is strengthened accordingly.

If an image has no readable text, text-based AI detection is not possible. In that case, the app reports that no reliable text signal was found, rather than showing a misleading 50/50 result.

Important Disclaimer

This frontend-only result is not 100% scientific proof.
OCR may misread blurry, small, or stylized text.
If metadata has been stripped, the source of an AI-generated image cannot be identified.
AI-generated images and AI-generated text are separate detection problems.
Do not base academic, legal, employment, or disciplinary decisions solely on this result.

Final Notice: Disclaimer The results provided by this AI Text Detector are estimates only and should not be considered definitive or conclusive. No AI detection tool can guarantee 100% accuracy, and false positives or false negatives may occur. You should not rely solely on these results for academic, legal, employment, or other important decisions. By using this tool, you acknowledge that you do so at your own risk and accept full responsibility for how you interpret and use the results.

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Important: The Image Scanner always completes OCR text extraction first. No score or verdict is generated until OCR finishes. If no readable text is found in the image, a misleading 50/50 result is never shown.

Frequently Asked Questions

How does the AI text detection work?

It analyzes linguistic patterns, perplexity, burstiness, vocabulary entropy, and structural sentence markers locally in your browser.

Can I scan images and documents?

Yes, built-in OCR extracts text from images, photos, and document files before analyzing the text content.

Is the detection ?

AI text detection provides an estimated probability score; it should be used as a general indicator rather than absolute legal or academic proof.

What are perplexity and burstiness in AI text analysis?

Perplexity measures text predictability, while burstiness measures variation in sentence length and structure. AI-generated text usually shows low perplexity and low burstiness.

Is my text data kept private and secure?

Yes, all analysis runs directly inside your browser using JavaScript and local OCR. Your documents and text inputs are never uploaded to remote servers.