Inspect the file’s fingerprints.
Format signatures, creation software, timestamps, revisions, scripts, attachments, and signature containers.
Open the PDF checker Bank-statement checks, bank by bankDo the documents tell the same story?
A free on-device check of PDF history, document math, and review signals, built for teams reviewing income evidence. The file never leaves your browser.
✓ Free scan · paid review from $5✓ Stays on this device✓ No account required✓ Exportable evidence
Try a private first check.
Inspect your document, or run the intentionally altered sample to see how a finding becomes a next step. The free scan runs on this device.
Inspect the file
Check format, metadata, revision history, scripts, attachments, and a cryptographic fingerprint.
Drop a document herePDF, PNG, JPG, or WebP · up to 15 MiBNothing is uploaded or stored.
Free scan: up to 15 MiB. Deep Review covers 5 MiB / 25 pages.
PDF metadata•Edit history•File signature•Embedded scripts•Balance math•Cryptographic fingerprint
One review · three evidence layers
A repeatable check beats a thirty-second glance.
Fraud review is not one magic score. Ocolta separates what the file exposes, what the numbers imply, and what still needs source verification.
Recalculate what should add up.
Reconcile pay and deductions or opening balances, deposits, withdrawals, and reported closing balances.
Review paystub checks Paystub checks, provider by providerTurn every flag into a next step.
See what was observed, the limits of that observation, and the safest evidence to request next.
Explore the methodologyBuilt for the actual decision
Not “fraud” or “safe.”
What agrees, what doesn’t, what’s missing.
An editing tool is not proof of fraud. Clean metadata is not proof of authenticity. Ocolta keeps observations separate from conclusions so your team can review fairly and consistently.
Run the altered sampleAltered sample resultHigh priority
94/100 review priority
!
Creation softwareGeneral-purpose editing software is named in metadata
Review!
Embedded scriptEmbedded script detected by the PDF parser
Review!
Revision historyIncremental revisions are present
Review!
TimestampsCreation and modification timestamps differ
Review✓
File signatureFile identity matches the detected format
Cleari
Digital signatureNo digital-signature container detected
InfoRecommended next evidenceReviewer uses the page they already have. Deep Review stays opt-in. The result stands without it.
Optional AI layer · $5, or Deep Review+ at $10
Ask for a second look, not a verdict.
Deep Review is a separate, opt-in layer with a different privacy boundary. It separately organizes fraud-risk indicators and AI-generation indicators, with evidence locations, confidence, benign explanations, limitations, and next steps. It uploads the selected file to Ocolta for an opt-in model review only after explicit consent. Model output can be incomplete or wrong and never proves fraud, authenticity, AI generation, or intent.
Review the consent and evidence modelFocused where evidence matters
Built for teams reviewing income evidence.
Start with the two workflows Ocolta supports honestly today: bank statements and paystubs.
Two clear processing boundaries
Local first. AI only by choice.
The free Integrity Scan reads files entirely in your browser. Deep Review is separate, requires explicit consent, and sends the selected file to Ocolta for that opt-in review.
Compare the data flowsPlain answers
Before you run a check.
Does Ocolta tell me whether a document is real?
No file-only tool can prove issuer authenticity. Ocolta surfaces supported structural and arithmetic signals, explains what they mean, and recommends what to verify at the source.
Does my document get uploaded?
The free Integrity Scan runs in your browser and does not upload the selected file. Deep Review is a separate, optional workflow that sends the file to Ocolta for that review only after you give explicit consent.
What documents are supported?
Integrity Scan accepts digital PDFs and PNG, JPG, or WebP images up to 15 MiB. Deep Review accepts those formats up to 5 MiB, checks PDFs for a maximum of 25 pages, and limits images to 10,000 pixels per side and 40 megapixels. PDF files expose the strongest structural evidence; images and locked PDFs have more limited provenance.
Can I use this to approve or deny an applicant?
Ocolta is decision support, not an eligibility or adverse-action system. Apply a consistent review policy, verify material facts at their source, and follow applicable fair housing, credit, and consumer-reporting rules.
Video transcript · Do the documents tell the same story?
Bank statements and paystubs can look convincing. Before your team makes a decision, check whether the document, the numbers, and the evidence tell the same story.
Ocolta helps property managers and lenders review document integrity. Start with a free scan, right in your browser. No account. Your file stays on your device.
Inspect the file history, metadata, attachments, and signature. Ocolta organizes the signals so you can see what needs a closer look, and why.
Try the intentionally altered sample. An embedded script and later revisions are flagged for review. These are reasons to investigate, not proof of fraud.
Then check the document math. Confirm extracted numbers against the source, and review consistency across documents. Keep the evidence connected to the question you need to answer.
A clean scan does not prove authenticity. Editing software does not prove fraud. Ocolta supports a careful human review, with findings you can inspect and export.
Need another layer? Optional paid Deep Review uses AI. It is a separate upload that you choose explicitly. Start locally, and decide whether that extra review is useful.
Make document review more consistent. Open Ocolta, try the altered sample, or scan a PDF on your device. Start your free Integrity Scan today.
Start your free Integrity Scan →Start with evidence
Know what deserves a closer look.
Run a private, browser-based integrity scan. Your file never leaves your device.
Scan a document