Since the coronavirus pandemic in 2020, digital processes have become the norm. Sometimes it is tempting to think that a quick screenshot is a valid representation of an official document. However, when it comes to serious matters like loan applications or insurance claims, screenshots pose significant risks and should NOT be accepted in place of original issuer PDFs for financial evidence, even if they are submitted in PDF format. This article explores why screenshots are unreliable and potentially dangerous for official purposes, often leading to the acceptance of fake documents and why organizations should insist on original issuer PDFs for digitally issued financial documents. Physical identity documents need a different input: a clear photo or scan of the original document, as explained below.
Screenshots may seem like a convenient way to capture information, but they come with several risks that make them unsuitable for serious purposes such as loan applications. According to our own processed document volume, fake document submissions involving manipulated screenshots have increased by 40% in the past year alone.
Ease of manipulation with graphical editors
One of the primary concerns with screenshots is how easily they can be manipulated using graphical editing software like Adobe Photoshop. Unlike original issuer PDFs, which contain layers of information and metadata, screenshots flatten the visible page and discard the PDF structure needed for those forensic checks. This means that skilled individuals can alter the contents of a screenshot without leaving obvious traces of manipulation. Images can still support other checks, but they cannot restore the original PDF evidence.
For instance, someone could easily change numbers, names or dates on a bank statement screenshot. A screenshot of the bank’s online banking environment is no better. Even if converted to PDF, these changes would be extremely difficult to detect through visual inspection alone.
Loss of essential metadata
When you take a screenshot, you are capturing only what is visible on the screen. This means you’re losing a wealth of valuable information that’s typically embedded in proper PDF documents.
Metadata is often described as “data about data.” In the context of PDF documents, metadata includes a variety of information that’s not immediately visible when viewing the document but is embedded within its structure. Examples could be the creation date, the author and the software that was used to create the document. This metadata can be invaluable in verifying the authenticity of a document and its absence in screenshots makes them far less reliable for official purposes.
This lack of metadata severely hampers document forensics efforts, making it difficult to verify the authenticity of screenshots. And criminals know this…
Vulnerability to HTML injection
Perhaps one of the most alarming and unknown risks associated with screenshots is their vulnerability to something called HTML injection. This technique allows anybody to temporarily alter what is displayed on the screen using the browser’s Developer Tools. A screenshot of this manipulated display can then be taken, creating a false representation that looks identical to the real thing.
HTML injection is a lesser-known but highly dangerous technique that can be used to create false screenshots. Here’s how it works in the case of income misrepresentation with banking data:
- An individual logs into their online banking portal (or any other secure site).
- Using the browser’s Developer Tools (available in Chrome, Edge, Firefox, etc.), he or she temporarily alters the HTML code that displays on the page.
- The account balance is changed from €3,000 to €3,000,000. The effect is short-lived as most banks tend to refresh the webview to avoid this problem, but this may take a few minutes.
- Finally, a screenshot is taken of this altered display and submitted as proof of funds.
The result is a screenshot that looks exactly like the original, with the same fonts, colors and layout… but with false information. This entire process can be completed in less than a minute, making it a significant threat to organizations relying on screenshots for verification.
Traditional document forensics techniques are often ineffective against this type of manipulation, so you need advanced verification systems.
Deepfakes and AI-generated content
As technology advances, so do the methods of creating fake documents. Deepfakes and AI-generated images represent a new frontier in document fraud, posing significant challenges to traditional verification methods. These sophisticated technologies can produce highly convincing fake images of bank statements, payslips or even government-issued IDs (see the story of OnlyFake) that are nearly indistinguishable from genuine documents to the untrained eye. Although many are still easy to catch by manual inspection, AI is increasingly creating realistic documents from scratch. An interesting company in this space is DuckDuckGoose.
For digitally issued financial documents, original PDFs preserve evidence that screenshots lose, such as embedded metadata, content structure and digital signatures where present. That does not make every PDF genuine, but verification systems like VerifyPDF can inspect its underlying structure and characteristics for signs of manipulation. Physical-ID images require their own document-specific checks instead of PDF forensics.
As deepfakes and AI-generated images become more prevalent, use the appropriate original input for each document type: issuer PDFs for digitally issued financial evidence and clear photos or scans of supported physical IDs. Converting an image to PDF does not add provenance or prove authenticity.
What is document forensics?
Document forensics is the scientific examination of electronic documents to determine their authenticity and integrity. This field combines digital analysis, data science and investigative techniques to scrutinize various aspects of a document, including metadata, content structure and visual elements. VerifyPDF is a document forensics company.
Using advanced software tools and algorithms, forensic analysts can detect alterations, inconsistencies or signs of manipulation that may not be visible to the naked eye. Document forensics is essential now that most fraud arrives as a digital file. It helps businesses and institutions protect themselves against sophisticated document fraud by uncovering evidence of tampering or forgery in electronic files.
Why screen photos and rescans lose PDF evidence
Screen photos and rescans of digitally issued documents cannot preserve the original PDF structure or edit history. That limits PDF forensics, rather than making every image unsuitable for verification.
Sometimes we see people taking a picture with their smartphone of a computer screen, tablet or another smartphone displaying the information. For digitally issued financial documents, these screen photos should not replace original issuer PDFs. They are susceptible to manipulation and lose the original PDF metadata and structure, unlike a direct photograph of a physical ID, which is the intended input for a separate verification pipeline.
Finally, rescanning an originally digital financial document loses the same PDF evidence. There is one problem though: sometimes there is nothing but a scanned document. For example, an employment contract may be signed on paper in an office, without a digital PDF or digital signature. Similarly, a receipt of a credit card transaction is printed by a POS terminal without any digital version with metadata. In these situations, it is important to review these documents carefully. Sometimes it is better to receive an unsigned contract in PDF format (what lawyers call an “execution version”) than a signed contract in PDF that has been scanned. Or better, use a digital signing solution such as DocuSign.
Physical IDs need a different input
Since summer 2026, VerifyPDF’s identity-document checks have been rolling out progressively across accounts for passports, driver’s licences, national IDs and residence permits. Submit a clear JPG, PNG or HEIC/HEIF photo or scan of the original physical document, not a screenshot, screen photo or print-to-PDF copy. Capture all four corners, keep the text sharp and avoid glare.
The ID pipeline validates machine-readable zone (MRZ) check digits where available, compares printed details with the MRZ when both are present and returns expiry and image-provenance warnings with an explainable risk rating. These checks do not prove that the uploader owns the identity or perform selfie matching, liveness checks or government or issuer database lookups. A consistent ID is not a guarantee of authenticity or a substitute for any required identity-proofing controls. Accepting ID images does not change the original-PDF requirement for supporting financial documents.
Best practices for document submission
Given the risks associated with screenshots, screen photos and rescanned financial documents, businesses should adopt document-specific submission rules:
For utility bills and bank letters, that process should include checks for altered proof-of-address details and PDF editing traces, plus independent confirmation of the address claim.
- For bank statements, payslips and other digitally issued financial evidence, request original PDFs downloaded directly from the issuer’s environment. Alternatively, obtain information directly from the source via an API or an e-wallet.
- When in doubt, contact the issuer directly to verify the document’s authenticity.
- Implement reliable document forensics processes, preferably using advanced technological solutions.
- Educate employees and customers about the risks of screenshots and the correct input for each document type. Do not treat an image converted to PDF as an original issuer PDF.
- For supported physical IDs, accept clear photos or scans of the original document using the identity-document upload guide.
How VerifyPDF fights fake documents
VerifyPDF is designed to eliminate much of the manual verification work and address the issues associated with screenshots and manipulated documents. Our system is trained with years of experience in document forensics and employs advanced AI algorithms to detect various forms of document manipulation. Even if the manipulation is visually indetectable, we can still flag documents that “Need attention” so that they can be reviewed by your team or additional questions can be asked about the source of that document.
Key features of VerifyPDF include:
- Metadata and document forensics to verify origin and integrity
- Pattern recognition to identify signs of manipulation
- Comparison with a vast database of authentic documents
- Detection of inconsistencies that might indicate HTML injection or other forms of alteration
By using VerifyPDF’s document forensics, businesses can significantly reduce the risk of accepting fake documents while streamlining their verification processes. Try VerifyPDF for free for 15 days, no credit card is needed.