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Detect AI-Generated PDFs
Find out if a PDF was written by ChatGPT, GPT-5, Gemini, or other AI tools, even if it's been lightly edited or paraphrased.
Free Fake PDF Detector
Catch Fraudulent and AI-Generated Documents InstantlyBETA
AI is changing document fraud. Our PDF detector catches what the naked eye misses, so you know exactly what you're dealing with.
FreeNo credit cardGet your report in seconds
Drag & drop a PDF or
How Our AI PDF Detector Works
- 1
Upload Your PDF
Drag and drop or select any PDF file, bank statements, invoices, resumes, academic papers, and more.
- 2
AI Analyzes the Document
Our AI scans for signs of manipulation, editing traces, metadata inconsistencies, and structural tampering by AI.
- 3
Get Your Results Instantly
Receive a clear verdict: genuine, suspicious, or flagged, with a breakdown of exactly what was detected.
Why Use Undetectable AI's PDF Checker?
Spot Fake and Tampered Documents
Our fake PDF detector flags suspicious edits, font inconsistencies, and metadata alterations that the naked eye misses.
Verify Document Authenticity
Check if a PDF is an original or has been modified. Ideal for verifying bank statements, pay stubs, invoices, and contracts.
Get Your Full Report by Email
Upload your PDF and receive a detailed verification report directly in your inbox, free, in seconds, no credit card needed.
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Frequently Asked Questions
An AI PDF detector is a tool that analyzes PDF files to determine whether the content was generated by AI, or whether the document has been tampered with or forged. It checks for signs like AI-generated text patterns, metadata inconsistencies, and editing traces.
You can use our PDF checker on bank statements, invoices, pay stubs, tax returns, academic papers, contracts, resumes, and more. Any text-based PDF can be analyzed.
Yes. Our tool works as both an AI content checker and a fake PDF detector. It identifies documents that have been edited using PDF editors or recreated from templates to look like legitimate files.
Just upload your file to run a PDF check, our AI scans it instantly for signs of tampering, AI-generated content, and document fraud detection. Enter your email and your full report lands in your inbox within seconds.
Our detector flags AI-driven edits and manipulation across document types and consistently outperforms manual review. Accuracy varies by document type and the kind of alteration involved.
Yes. All uploaded files are encrypted in transit, processed in an isolated environment, and never shared with third parties. Your documents are automatically deleted after analysis.
Not anymore. Our tool automates the entire process, simply upload your file and let the AI do the work. No technical knowledge needed, no manual checks, no guesswork.
Yes, the basic PDF check is completely free, no credit card required. Just upload your file, enter your email, and get your report instantly.
Still have questions?
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