Omni Sign · Document signing
Sign, seal and verify documents online
Put your signature and company stamp on any PDF, seal it so changes cannot go unnoticed, and send it to others to sign. Every sealed document carries a reference anyone can check.
Pick a plan when you are ready.
Signing that holds up
Not just a picture of a signature: each sealed document can prove where it came from and that nobody has changed it.
Your signature and stamp, saved
Upload them once and drop them onto any PDF. Company stamps are shared; personal signatures stay personal.
Prepare the PDF first
Add names, dates and text, fill in form fields, and reorder, rotate, merge or remove pages.
A seal that shows tampering
Sealing fingerprints the finished file and signs it with your company's own key. Change anything and verification fails.
Anyone can verify
Each sealed document gets a reference. Recipients check it on our public verification page, with no account needed.
Send for signature
Invite people to sign by email link, see who has signed, and send reminders or cancel when plans change.
A full audit trail
Who viewed, signed and sealed, and when, with a certificate of completion for the finished document.
Everything on one screen
Drop in a PDF, place your signature and stamp where they belong, and seal it. No separate editor, no printing and scanning.
- Invoices, offer letters, contracts: any PDF
- Consent to sign electronically is recorded every time
- Download the sealed copy or keep it on file

Why teams sign with Omni
No extra app to buy
Included with Omni Books. Use it for invoices, offer letters, contracts and vendor agreements.
Your company's own key
Each company seals documents with its own key, so a signature can be traced back to you.
Proof for the other side
Clients and partners can confirm a document is genuine without signing up for anything.
Pricing
Included with Omni Books
Document signing comes with Omni Books at no extra cost.
From
$35 / organisation / month
- Includes 1 user
- $7 per extra user / month
- Billed annually, charged in Naira
Stop printing to sign
Get started for free: sign and seal your first document in minutes.