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AI PDF Detector ai pdf detector

Spot AI-generated content from PDFs or text in a snap.

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How to detect AI-generated content online?

Only 3 steps to detect your pdf and keep it at its best.

01

Add Content

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Input a paragraph or upload a PDF to get started.

02

Scan Text

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HiPDF AI Detector scans your content. Wait for the process to finish.

03

Get Results

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Receive detailed insights on whether your content is AI-generated, including perplexity and burstiness scores.

Why choose HiPDF AI PDF Detector?

highlighted sentences

Highlighted Sentences

AI-generated sentences are highlighted, with a gauge showing the AI content percentage.

free online pdf checker

Free Online PDF Checker

Detect AI content for free in your browser—up to 20 pages (5,000 tokens). No installation needed.

high accuracy model

High Accuracy Model

Powered by GPTzero, HiPDF AI Detector delivers precise perplexity and burstiness scores for reliable results.

pdf report

PDF Reports

Generate automatic PDF reports for every scan, providing proof of AI-free content.

multilingual support

Multilingual Support

Detect AI content in multiple languages, including English, French, German, and more.

beyond ai detection

Beyond AI Detection

Chat with PDFs, get summaries, rewrite text, and detect AI content—all in one tool.

Key features of HiPDF free AI Detector.

Powered by ZeroGPT, a trusted AI Detector for GPT-4 & ChatGPT.

Check Document for AI Content

Analyze the entire document to show the probability of AI writing it.

Detect AI Content Now
ai likelihood score

Sort AI vs. Human Content

Sort sections by likelihood of being AI vs. human. Click colored boxes to jump to specific text.

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detect ai content

Highlight Key Sections

Color-code AI and human content. Display the top 5 sentences most likely written by AI.

Detect AI Content Now
highlight key sections

Edit Original Text Easily

Modify content directly. Click highlighted sentences to go to their original spot.

Detect AI Content Now
edit original text easily

Export PDF Report

Generate a PDF report to show the document is AI-free.

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export pdf report

Share Detection Proof

Copy a link to share detection results as proof of AI-free content.

Detect AI Content Now
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AI Text Checker perfect for every project.

An AI detector to meet all your needs.

Teachers
Students
Researchers
Editor
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AI detector for teachers.

Evaluate student assignments.

  • Grade student work: Detect originality in student papers and assignments to prevent cheating.
  • Uphold academic integrity: Ensure the authenticity of coursework and research projects.
ai essay detector for students
AI essay detector for students.

Self-check papers and improve writing.

  • Self-check before submission: Ensure your paper is free of AI-generated content to avoid academic misconduct.
  • Enhance your writing: Use AI detection tools to refine your style, avoid mechanical phrasing, and elevate your writing skills.
ai scanner for researchers
AI scanner for researchers.

Ensure original research results.

  • Guarantee authenticity: Verify that research results are based on original work, not AI-generated content.
  • Enhance research quality: Boost the reliability and credibility of findings by detecting and removing AI-generated material.
ai writing checker for academic journal editors
AI writing checker for academic journal editors

Check the originality of submitted papers.

  • Review submissions: Verify the originality of papers to elevate the academic standard of the journal.
  • Protect journal reputation: Use AI detection tools to ensure only high-quality, authentic papers are published.
ai detector for teachers
AI detector for teachers.

Evaluate student assignments.

  • Grade student work: Detect originality in student papers and assignments to prevent cheating.
  • Uphold academic integrity: Ensure the authenticity of coursework and research projects.
ai essay detector for students
AI essay detector for students.

Self-check papers and improve writing.

  • Self-check before submission: Ensure your paper is free of AI-generated content to avoid academic misconduct.
  • Enhance your writing: Use AI detection tools to refine your style, avoid mechanical phrasing, and elevate your writing skills.
ai scanner for researchers
AI scanner for researchers.

Ensure original research results.

  • Guarantee authenticity: Verify that research results are based on original work, not AI-generated content.
  • Enhance research quality: Boost the reliability and credibility of findings by detecting and removing AI-generated material.
ai writing checker for academic journal editors
AI writing checker for academic journal editors

Check the originality of submitted papers.

  • Review submissions: Verify the originality of papers to elevate the academic standard of the journal.
  • Protect journal reputation: Use AI detection tools to ensure only high-quality, authentic papers are published.
ai detector for teachers
AI detector for teachers.

Evaluate student assignments.

  • Grade student work: Detect originality in student papers and assignments to prevent cheating.
  • Uphold academic integrity: Ensure the authenticity of coursework and research projects.
ai essay detector for students
AI essay detector for students.

Self-check papers and improve writing.

  • Self-check before submission: Ensure your paper is free of AI-generated content to avoid academic misconduct.
  • Enhance your writing: Use AI detection tools to refine your style, avoid mechanical phrasing, and elevate your writing skills.
ai scanner for researchers
AI scanner for researchers.

Ensure original research results.

  • Guarantee authenticity: Verify that research results are based on original work, not AI-generated content.
  • Enhance research quality: Boost the reliability and credibility of findings by detecting and removing AI-generated material.
ai writing checker for academic journal editors
AI writing checker for academic journal editors

Check the originality of submitted papers.

  • Review submissions: Verify the originality of papers to elevate the academic standard of the journal.
  • Protect journal reputation: Use AI detection tools to ensure only high-quality, authentic papers are published.
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Sarah

High School English Teacher

HiPDF AI Detector has been a lifesaver for grading essays. It helps me quickly spot AI-generated content so I can focus on teaching my students how to write authentically. It’s easy to use and saves me so much time!

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Alex

College Senior

I use HiPDF AI Detector to check my papers before submitting them. It’s great for making sure my work is original and doesn’t sound too robotic. Plus, it helps me improve my writing style. Highly recommend it!

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Dr. Carter

Biomedical Researcher

As a researcher, maintaining the integrity of my work is crucial. HiPDF AI Detector helps me ensure my findings are original and not influenced by AI-generated content. It’s a reliable tool for upholding research standards.

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Michael

Journal Editor

HiPDF AI Detector is an essential tool for our journal. It helps us verify the originality of submissions and maintain the quality of our publications. It’s straightforward to use and gives us confidence in the papers we publish.

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Sarah

High School English Teacher

HiPDF AI Detector has been a lifesaver for grading essays. It helps me quickly spot AI-generated content so I can focus on teaching my students how to write authentically. It’s easy to use and saves me so much time!

ai pdf detector for it

Alex

College Senior

I use HiPDF AI Detector to check my papers before submitting them. It’s great for making sure my work is original and doesn’t sound too robotic. Plus, it helps me improve my writing style. Highly recommend it!

ai pdf detector for legal document

Dr. Carter

Biomedical Researcher

As a researcher, maintaining the integrity of my work is crucial. HiPDF AI Detector helps me ensure my findings are original and not influenced by AI-generated content. It’s a reliable tool for upholding research standards.

ai pdf detector for business

Michael

Journal Editor

HiPDF AI Detector is an essential tool for our journal. It helps us verify the originality of submissions and maintain the quality of our publications. It’s straightforward to use and gives us confidence in the papers we publish.

ai pdf detector for edu

Sarah

High School English Teacher

HiPDF AI Detector has been a lifesaver for grading essays. It helps me quickly spot AI-generated content so I can focus on teaching my students how to write authentically. It’s easy to use and saves me so much time!

ai pdf detector for it

Alex

College Senior

I use HiPDF AI Detector to check my papers before submitting them. It’s great for making sure my work is original and doesn’t sound too robotic. Plus, it helps me improve my writing style. Highly recommend it!

ai pdf detector for legal document

Dr. Carter

Biomedical Researcher

As a researcher, maintaining the integrity of my work is crucial. HiPDF AI Detector helps me ensure my findings are original and not influenced by AI-generated content. It’s a reliable tool for upholding research standards.

ai pdf detector for business

Michael

Journal Editor

HiPDF AI Detector is an essential tool for our journal. It helps us verify the originality of submissions and maintain the quality of our publications. It’s straightforward to use and gives us confidence in the papers we publish.

FAQs about AI content detector.

  • GPTZero is a leading AI detector that checks if a document was written by large language models like ChatGPT. It detects AI-generated content at the sentence, paragraph, and document levels, helping users identify AI use in various contexts.

  • HiPDF AI content detector benefits educational institutions, content creators, and organizations. It helps uphold academic integrity, refine AI-generated content, and ensure that published content is human-created.

  • HiPDF provides robust data protection by using SSL encryption for online safety. It complies with security protocols like GDPR and automatically deletes uploaded files within 60 minutes after processing.

  • Yes, HiPDF AI Detector supports multiple languages, including Chinese, English, French, German, and more. Just upload your file or paste the text to check for AI content!

  • Yes, AI-generated content can be detected by analyzing language patterns and text structures. You can use online AI detectors, like HiPDF's AI detector, to identify AI-written content for free. Just upload a PDF or input your text to HiPDF, and it will give you detection results instantly.

  • There are many AI content checkers available in the market, each of which has its unique features. HiPDF is one of the leading AI content checkers that allows you to detect AI-generated content online for free with a user-friendly interface, lightning-fast detection speed, and precise results.

  • AI content detectors use advanced algorithms and machine learning models to identify cues indicative of artificial intelligence. When a user inputs text into an AI content detector, it compares the text with known patterns of AI-generated content, and determines the likelihood of the text generated by AI.

  • AI detection refers to the process of identifying the presence of AI in content or data. In respect of AI content detection, it refers to detecting and recognizing if the content is generated by AI technology or a human.

  • HiPDF is a top-notch online AI content checker that identifies if the text is written by AI and separates robot words from human-written content. Simply upload the PDF or enter the text to HiPDF, detect the content with one click, and get results in seconds. With HiPDF, you can ensure the authenticity and quality of your written work.

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