Convert PDF to fax format
E-fax APIs and legacy fax servers don't accept PDFs — they require multi-page TIFF files in Group 4 compression. When your workflow generates a PDF contract or notification, you need to convert it before it can be transmitted. The PDF to TIFF API handles PDF to TIFF conversion for fax servers automatically, so your document goes from generated to transmitted without manual intervention.
Convert PDF to TIFF FreeAutomated fax-sending pipeline
PDF generated (contract, notice)
From your doc generation system
PDF → TIFF Group 4 conversion
Via PDF to TIFF API (200 DPI, multi-page)
TIFF sent via e-fax API
Accepted. Transmission confirmed.
G4
fax compression
200
DPI output
Multi
page TIFF
0
transmission errors from format mismatch
100%
e-fax API compatibility
< 2s
conversion time
Legal
admissibility preserved
Why fax workflows need PDF-to-TIFF conversion
E-fax APIs require TIFF Group 4
eFax, Twilio Fax, Notifii, and most telecom-grade fax APIs only accept TIFF files with Group 4 (CCITT) compression. Sending a PDF returns an error.
Compliance workflows can't skip fax
Many legal, medical, and government workflows still require fax as the official transmission channel. The format conversion is unavoidable — automation makes it invisible.
Manual conversion is an audit risk
Staff manually converting PDFs to TIFF using desktop tools creates inconsistency and breaks the automated audit trail. API conversion logs every job.
FAQ
What TIFF settings does fax transmission require?
Does the conversion preserve all pages from a multi-page PDF?
Can this integrate with Twilio Programmable Fax?
Automate PDF-to-fax in your pipeline today.
Every generated PDF converts to fax-ready TIFF automatically — no manual steps, no transmission errors.