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HTPBE?

Structural PDF tamper detection API. Catches edits your KYC stack misses.

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Status

Algorithm v2.34.4

Tool profile

Canva

Canva reads as a downstream re-saver — it surfaces disproportionately on documents whose original Creator was a different, often institutional, application.

Back to all statistics
Forensic verdict

Anomaly profile

Based on this tool’s share of the HTPBE? corpus.

Modification rate
64%+16pp above baseline
Corpus baseline: 48%
Corpus share
0.40%
Share of all analyzed appearances
Modification rate
64%
+16pp above baseline
Role split
52%C/48%P
Creator vs Producer share of appearances

Corpus profile

How Canva shows up in HTPBE? corpus

Canva is a web-based design tool. Documents downloaded as PDF from Canva carry Canva as Producer and were rebuilt entirely from Canva’s render pipeline.

Canva is the legitimate generator for design output. Contextual signal: when Canva appears as the latest Producer on a document whose Creator pointed to an institutional source, the document is a Canva rebuild rather than the original — that producer/creator mismatch is the marker.

The signal
Canva is the legitimate generator for design output.

Role in the workflow

How Canva shows up in metadata

Every PDF carries a Creator (the application that produced the original document) and a Producer (the engine that wrote the PDF). The same tool can appear in either slot, with very different modification profiles.

CAs Creator · 52%
As Producer · 48%P
CAs Creator
  • Share of appearances
    52%
  • Modification rate
    65%
  • Avg file size
    1.1 MB
PAs Producer
  • Share of appearances
    48%
  • Modification rate
    63%
  • Avg file size
    1.1 MB

How to read this

The Creator slot typically reflects where a document started life. The Producer slot reflects whatever wrote the bytes — and is the field that gets overwritten when a PDF is opened, edited, and saved by a downstream tool.

A higher modification rate as Producer than as Creator usually means the tool is acting as a re-saver on documents that originated elsewhere. A higher rate as Creator points to fragile workflows around the original authoring app.

Distributions

What ships alongside Canva

The PDF versions Canva writes when acting as Producer, and the other tools that appear in the same documents.

PDF versions written

Most output is PDF 1.4 (100% of files where Canva is the Producer).

PDF 1.4100.0%

Common Producers when Canva is the Creator

iText writes 4% of these files — that pairing is the Adobe-stack default for many institutional pipelines.

iText4.3%
iOS Print to PDF2.2%

Related profiles

Tools you’ll see next to Canva

Other tools that frequently share metadata with Canva in the same documents. Each card links to its own forensic profile.

P2% co-occurrence
iText
Corpus share7.9%
Mod rate46%
P1% co-occurrence
iOS Print to PDF
Corpus share1.7%
Mod rate67%

Long tail

Notable observations

Smaller cuts of the Canva corpus — useful context, but treat each row as a single data point rather than a strong signal.

Avg pages per document
2.0
Oldest observed
27.04.2025 — about 1 year ago

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