Choosing a document verification partner is a significant decision. This page helps procurement and operations teams understand how TamperCheck compares to VerifyPDF - on pricing, privacy posture, and what it actually takes to get started. Note that TamperCheck works on digital PDFs and scanned hard copies alike - including physical stamp verification and handwritten signature analysis, not just native digital files.
Digital PDFs
text layer + raster analysis
Phone photos & scans
camera captures and flatbed scans
Physical stamp verification
ink bleed, embossing, overlay detection
Handwritten signature analysis
forgery and substitution checks
Side-by-side
| What matters to your team | TamperCheck.ai | VerifyPDF |
|---|---|---|
| Core focus | Forensic verdict on 100+ document types | Tamper and AI detection for financial and ID documents |
| Finding granularity | Names the specific field that changed and where | Document-level flags across metadata, structure and fonts |
| Pricing model | $0.50 per document, no subscription, no cap | $15-$79/mo tiers, capped at 150-1,000 documents |
| Data retention | Zero storage - analysed in memory, never written to disk | Encrypted at rest, auto-deleted after a retention period |
| Speed | About a minute | About 5 seconds (vendor claim) |
| Coverage | 100+ document types across 190+ countries | Financial documents plus major identity documents |
| API access | Included from the first document | Professional tier and above |
| Detection method | 130+ forensic layers incl. per-field font and recompression analysis | Metadata, structure, content stream, provenance, font integrity |
When to choose TamperCheck
- Your analyst has to justify the decision. TamperCheck names the field - “net pay does not match gross minus deductions” - rather than flagging the file and leaving them to find it.
- Zero retention is a hard requirement. Documents are discarded when analysis finishes, so there is no retention window to explain to a security reviewer.
- Your volume is spiky or unpredictable. There is no monthly cap to breach and no subscription to carry through a quiet month.
- You verify beyond financial and identity documents - degree certificates, tenancy agreements, trade licences, medical reports - across 190+ issuing countries.
When to choose VerifyPDF
- Steady, predictable volume inside their caps is cheaper. At a consistent 1,000 documents a month their Professional tier works out well below $0.50 per document. If you reliably use the allowance, they win on price.
- Speed matters more than explanation. They claim a verdict in about five seconds against our roughly one minute. For a synchronous checkout or onboarding flow, that difference is real.
- You only ever check bank statements, payslips, tax forms and IDs, and the extra document coverage is not worth anything to you.
Where the two genuinely differ
Both products sit in the same category and sell to the same teams, so the honest comparison is narrow. The substantive difference is where the finding resolves. VerifyPDF's published method is document-level - metadata, structure, content stream, provenance, font integrity - which answers “is this file suspicious?”. TamperCheck resolves to the field, which answers “what changed, and where?”, and that is what an underwriter needs in a decision file they may have to defend later.
The second difference is commercial shape. Theirs is a seat-and-cap subscription; ours is per document with no floor and no ceiling. Neither is universally cheaper: below roughly thirty documents a month, or with volume that spikes, pay-as-you-go costs less. At steady mid volume inside their caps, their subscription costs less per document. Model your own volume rather than taking either vendor's word for it.
The third is retention. They encrypt at rest and delete after a retention period; we never write the document to disk at all. If your security review turns on data residency and retention windows, that is a materially shorter conversation.
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