Features
Everything between “please sign” and “filed”.
AiroSign covers the whole loop — template, send, sign, seal, notify — with an API underneath every part of it.
Templates
Documents that fill themselves in.
A template is a PDF plus the fields each role completes. Build it visually, generate it from HTML, or clone one from the API.
Visual field builder
Drag signature, initials, text, date, checkbox, select, number, phone and image fields onto any page. Resize, assign roles, mark required or read-only.
HTML templates
Write the document in HTML with DocuSeal-compatible tags like <signature-field>. AiroSign renders it to a Letter PDF and extracts every field's position.
Prefill & lock
Pass values when you send. Prefilled fields render read-only so a signer sees a finished contract, not a form.
Roles
Contractor, Company, Buyer — name the parties, and each signer only sees their own fields.
Sending
Every channel your process already uses.
Send from the dashboard, from your own code, or embed the signing form so people never leave your site.
Branded invitations
Emails carry your company name, logo, colour and reply-to. Business plans send from your own verified domain.
Embed
<airosign-form data-src> renders the signing page in an iframe and emits load, completed and declined events.
Order & reminders
Parallel or sequential signing, automatic reminders for unopened requests, expiry dates, and one-click resend.
Email verification
Optionally require a one-time code before a signer can open the document.
Signing
A signing page people finish.
Fast on a phone, obvious on a laptop: read the document, fill what's yours, sign, done.
Draw, type or upload
Signatures and initials by finger, mouse, keyboard or photo. Typed signatures render in a script face.
Consent gate
Signers agree to electronic records before anything is collected — the ESIGN/UETA consent requirement, done for you.
Autosave
Values save as they're typed; a closed tab resumes where it left off.
Decline with reason
A signer can decline; the sender is notified with their note.
Proof
Evidence that travels with the PDF.
The completed document is more than a picture of a signature.
Hash-chained audit trail
Each event's hash covers the previous one. Edit or delete anything and the chain breaks visibly.
Certificate page
Appended to every completed PDF: signers, timestamps, IPs, user agents, original document hash and the full event chain.
PKCS#7 sealing
A detached digital signature over the final bytes — Adobe Reader and others show whether it has been altered.
Public verification
/verify/<id> recomputes the chain and lets anyone upload a PDF to compare its SHA-256 with the sealed original.
Integration
Built to be called, not clicked.
The dashboard is a client of the same API you get.
REST API
Templates, submissions, submitters, documents. Compatible with DocuSeal's shape, so their SDKs mostly just work.
Webhooks
Signed with a per-endpoint secret, retried at 1, 5, 15, 60, 240 and 720 minutes, with a delivery log and test button.
Realtime dashboard
Document lists and detail pages update the moment a signer opens, starts or completes.
Team & keys
Owner, admin and member roles; multiple API keys per organization with last-used tracking and instant revocation.