Completed intake forms, signed contracts with comment bubbles, and redlined agreements still contain live layers recipients could tamper with. Flattening bakes everything into static page pixels—or vector equivalents— for archival integrity.

Siliph Flatten PDF converts interactive fields and drawing annotations in the browser-backed engine with encrypted uploads. Signatures applied via Sign PDF become permanent marks suitable for records retention policies.

Flatten before distributing finalized HR packets or government submissions that must not change after approval. File size may increase slightly when complex annotations rasterize, so follow with Compress PDF if portals enforce caps.

Files purge within two hours on the free plan, and flattening requires no signup. You cannot un-flatten easily—keep an editable master copy offline before flattening the delivery version.

Use Create Forms to build interactive templates, collect responses, then flatten the completed PDFs for your CRM upload.

Siliph security tools—password protection, unlocking, redaction, and watermarks—process inside an encrypted browser session so sensitive PDFs stay protected in transit. We delete your files within two hours on the free tier and never gate basic protection behind signup.