FONT FAIL
Names the missing embedded font and affected page instead of leaving you to guess.
A good-looking PDF can still fail preflight
Find the blocker before you upload.
PrintProof is a local Windows preflight assistant for DriveThru print books. Drop in your PDF and get an evidence receipt that names the failed rule, the affected pages, and what to inspect next.
See a real receipt
One-time beta license · $39
12 months of updates included
Illustrated report excerptFile hash recorded
Overall result
BLOCK
Fonts embeddedFAIL
Outside bleedBLOCK
PDF/X declarationNOT FOUND
Blocking evidence
Font “ArialMT” is referenced but not embedded. Affected page: 1. Embed all fonts, export again, then rerun preflight.
Proof before pitch
One invisible defect. One exact diagnosis.
The illustration summarizes findings from a public veraPDF conformance fixture. Its unembedded font is deliberately detectable; a separate embedded-font fixture passes that font check. These are test fixtures, not a customer repair or complete DriveThru-ready books.
FONT PASS
The corresponding embedded-font fixture clears the same rule-level check.
What it checks
A second set of eyes that leaves a receipt.
- Embedded fonts — including fonts inside form resources
- Trim, media box, and three-edge bleed geometry
- Effective image resolution, not just image metadata
- PDF/X metadata, output intent, and color-space signals
- Transparency, crop-mark, margin, and signature warnings
Local by design.
Your manuscript stays put
The desktop app reads your PDF locally. It does not upload the file or require an account.
Honest boundary
PrintProof is an early-warning assistant, not an official DriveThru validator or approval guarantee. Final proofing and platform review still matter.
Founding beta
Catch the expensive surprise earlier.
Windows app, sample receipts, 12 months of updates, and one bounded receipt interpretation for the first three paid beta customers.
30-day money-back guarantee through Gumroad.
Unsigned Windows beta: your computer may warn before launch. A checksum confirms file equality, not software safety. Follow your security policies. Not full PDF/X certification or a print-acceptance guarantee.
Independent product · not affiliated with or endorsed by DriveThruRPG, OneBookShelf, or Roll20