Reusable PDF templates
Place signatures, initials, dates, text, checkboxes, selections, attachments, stamps, and other fields once, then send the template again whenever you need it.
E-signatures inside your secure document platform
Send documents for signature and keep the signed record in one place.
Turn any PDF into a reusable template, route it to one signer or many, and track every request through completion. Signers need no account, and the sealed PDF and completion certificate return to your Vault.
- 14 field types
- No signer account
- Parallel or sequential routing
- Tamper-evident PDF
Built for everyday agreements
Why an electronic signature can be binding
Laws such as the US E-SIGN Act, state UETA enactments, Ontario's Electronic Commerce Act, and EU eIDAS generally prevent a signature from being rejected only because it is electronic. Stoatify records evidence of the signer's intent, the signing channel, the completed terms, and the document's integrity.
Contracts, NDAs, service agreements, approvals, and other routine records can be signed electronically. The agreement itself still needs valid terms, authority, and any formalities required by its jurisdiction.
Complete signing workflow
From reusable template to signed copy in the Vault.
Stoatify handles the practical work around a signature, not just the mark on the page. Build once, send from the same platform as your documents, follow progress, and keep the final evidence with the record.
One signer or many
Send to any number of people in parallel, or set a sequential route so each signer receives access at the right point in the agreement.
Guided signing without an account
A signer opens the private link from any modern browser, completes only the fields assigned to them, and draws, types, or uploads a signature.
Tracking and completed records
See sent, viewed, signed, completed, and voided status, send reminders, and receive the sealed PDF and completion certificate in the Vault.
Compare your options
Choose Stoatify when signing belongs with the rest of your documents.
Dedicated signing products and office suites are strong choices for their own jobs. Stoatify is the better fit when you want e-signatures, document organization, search, secure sharing, versioning, and activity history in one platform.
At a glance
Stoatify
DocuSeal
Google Workspace / Dropbox Sign
Signing setup
StoatifyReusable PDF templates with 14 field types
DocuSealReusable forms with 10 field types
Google Workspace / Dropbox SignNative or integrated signing inside an existing suite
Multiple signers
StoatifyParallel or sequential routes, with no signer account
DocuSealMultiple submitters with preserved signing order
Google Workspace / Dropbox SignMultiple signers with email delivery and tracking
Completion evidence
StoatifyPAdES/PKCS #7 sealed PDF plus completion certificate
DocuSealDigitally signed PDF plus audit certificate
Google Workspace / Dropbox SignFinal signed PDF and an audit trail
Beyond signing
StoatifyOCR search, categories, versioning, secure sharing, and activity history
DocuSealSigning-focused workflow, API, embedding, and advanced identity options
Google Workspace / Dropbox SignBroad file storage, sharing, and office collaboration
Designed around the legal evidence
Four parts of a defensible electronic agreement.
Electronic-signature laws focus on the same fundamentals as paper: intent, attribution, association with the agreed terms, and a record that can be retained and reproduced.
1
Consent and intent
Did the signer choose electronic signing and mean to sign?
The signer opens an addressed request, reviews the PDF, supplies every required value, and selects “Sign and complete.” The completed record preserves that deliberate signing act.
2
Attribution
What connects the act to the claimed person?
Stoatify connects the request to the recipient name and email, a unique private link, opened and signed timestamps, IP address, and browser details.
3
Association and integrity
Can the signature be tied to these exact terms?
Fields are rendered onto the final PDF before the organization applies its digital seal. The embedded signature covers the PDF byte ranges, so a later change is detectable by cryptographic verification.
4
Retention and access
Can the record be reproduced later?
The completed PDF and its completion certificate are saved in the sender's Vault, where the original digital files can be downloaded, retained, and verified later.
Signing lifecycle
How a signing request becomes a sealed record.
Each stage has a clear job: preserve the terms, control access, record the signing act, capture context, and make later changes to the completed PDF detectable.
- 01
Build the template
Turn a PDF into a reusable template with 14 field types. Field coordinates, signer roles, and signing order are fixed for each submission.
PDF snapshot + fractional field coordinates - 02
Issue a private link
Stoatify creates 32 random bytes for each signer. Only a SHA-256 hash is stored; the raw secret stays in the link sent to that signer.
256-bit random bearer capability - 03
Collect context
At first open, Stoatify records the time, IP address, and browser user agent. Sequential requests remain blocked until the earlier signer finishes.
openedAt + IP + user agent - 04
Capture the signing act
The signer completes every required field and selects Sign and complete. The server stores the values and records the completion time.
required fields + signedAt - 05
Seal the final PDF
After every signer finishes, the values are flattened onto the PDF and the complete byte range is signed with the organization's X.509 key.
SHA-256 + RSA + CMS/PKCS #7 - 06
Store the evidence
The signed PDF returns to the Vault. A separate completion certificate lists each signer, email, signed time, IP address, and user agent.
sealed PDF + completion certificate
Technical integrity
Every completed PDF carries tamper evidence.
Stoatify flattens the submitted values onto the PDF, signs its byte ranges, and stores the sealed file with a readable certificate that summarizes who signed, when, and through which session.
- SHA-256 digest over the PDF byte ranges
- Detached CMS signature, commonly called PKCS #7
- 2,048-bit RSA organization key in an X.509 certificate
- PAdES baseline attributes and an RFC 3161 time-stamp token
- Private signing key sealed at rest with AES-256-GCM
- Built-in verification checks every embedded PDF signature
Inputs
PDF + signer values
Signature images, initials, dates, text, selections, and other assigned fields.
Seal
SHA-256 → CMS
The organization key signs a digest. The certificate and time evidence travel inside the PDF signature.
Output A
Tamper-evident PDF
A verifier recomputes the digest. A later byte change causes integrity validation to fail.
Evidence summary
Completion certificate
Names, emails, signed times, IP addresses, user agents, and the overall completion time, stored alongside the sealed PDF in the Vault.
Two layers work together. The drawn, typed, or uploaded mark records the signer's expressed act. Stoatify then applies an organization-level X.509 seal so a verifier can detect changes after completion. The signing-link and session evidence support attribution; the cryptographic seal protects document integrity.
Signer identity
Signer evidence, explained clearly.
Every request is addressed to a named recipient at their email address, with a private signer link and a recorded signing session. Together, these facts create useful attribution evidence for routine agreements without overstating what any individual signal proves.
Private signing link
Included- Evidence captured
- A unique 256-bit secret is issued for the named signer, while only its SHA-256 hash is stored by Stoatify.
- What that evidence means
- The link supports attribution to the delivery channel. Like any emailed link, it can be forwarded or opened by someone with inbox access.
Signing session
Included- Evidence captured
- Stoatify records when the request is first opened and completed, together with the IP address and browser user agent.
- What that evidence means
- Session facts add useful context, but an IP address or browser does not uniquely identify a person.
Match identity assurance to the agreement
Stoatify's standard flow does not perform a government-ID and liveness check or issue an eIDAS qualified electronic signature. For high-value, regulated, notarized, or identity-sensitive agreements, pair the signing record with the stronger identity, authority, witness, or qualified signature process the transaction requires.
If a dispute reaches court
A clear evidence trail if an agreement is challenged.
The original PDF, its embedded signature, the completion certificate, and the signing metadata give your legal team concrete artifacts to verify, preserve, and connect to the surrounding transaction.
1 Preserve
Keep the completed PDF, certificate, invitation email, related agreement, and the surrounding business records. Do not print and scan the PDF, because that discards its embedded signature.
2 Verify
Run the original PDF through Stoatify's verifier or a capable PDF signature validator. Record the signature count, integrity result, certificate subject, and trusted timestamp result.
3 Authenticate
A witness or qualified person may explain how the records were created and kept. In US federal court, Rules 901 and 902 describe system evidence and certifications used to authenticate electronic records.
4 Present the full record
Connect the sealed PDF and certificate to the invitation, negotiations, approvals, identity checks, authority records, and later performance. The whole transaction gives the signing evidence its context.
What the records can support
- The PDF presented is the same byte sequence sealed at completion
- The named recipient's unique link opened from the recorded IP and browser
- The recorded fields were submitted at the stated time
- The organization's signing key applied the final digital seal
What legal teams should preserve
- The original digital PDF with its embedded signature intact
- The completion certificate and original invitation email
- The agreement's drafts, approvals, correspondence, and performance records
- Evidence that the signer had authority to act for an organization
- Any independent identity, witness, or notarization record used for a higher-risk agreement
Stoatify preserves product evidence, while courts decide authority, capacity, admissibility, weight, and enforceability from the complete record and the law that applies. A completion certificate supports that record, but it does not replace surrounding business evidence or document-specific formalities.
Laws and technical standards
Primary references behind this page.
Legal requirements vary by document, parties, location, and governing law. These links are a starting point for counsel and technical reviewers, not a substitute for jurisdiction-specific advice.
Choose evidence before the dispute exists.
Use Stoatify for a complete, tamper-evident signing workflow, then match additional identity and legal formalities to the risk and document type.
Manage every document from one platform.
Capture, organize, find, share, and sign documents without moving work between tools.
No credit card required