Stop overpaying for e-signatures.

Send a PDF, get it signed online in minutes, and receive a sealed document that proves who signed and when. Legally recognised, simple to use, up to five times cheaper.

From $11.99 a month. 7-day free trial, no card required.

See pricing
Signers
Several people on one document, at once or in order
No account needed
Your signers sign from a link, on any device
Tamper-proof
Each document is sealed once everyone has signed
Proof included
Who signed, when and from where, attached to the PDF

From PDF to sealed agreement, in one flow.

Outsigner covers the whole life of a signature request: preparing the document, sending it, following every signer and returning a sealed PDF.

  1. 01

    Upload

    Choose a PDF. It is fingerprinted in your browser before it leaves your device.

  2. 02

    Place and send

    Add your signers, place their fields and send the envelope.

  3. 03

    Collect

    Signers sign from their link. You receive the sealed PDF when the last one signs.

If anyone changes the document, it shows.

Every signed document gets its own seal. Change even a single figure afterwards, and the seal no longer matches.

100 characters

Edit the text: the seal on the right changes as soon as one character does. Nothing leaves this page.

Seal at signing

Seal of this text

Intact. The computed hash matches the sealed hash.

Everything you need to get a document signed.

Prepare, send, track and seal a document from one place.

Place every field where it belongs

Upload a PDF and drop fields directly on the page. Each field belongs to one signer and can be moved, resized or made optional.

SignatureInitialsDate signedFull nameTextCheckbox

Up to 100 signers per envelope

Invite everyone at once, or one after the other in the order you choose. Each signer receives a personal link by email.

  1. 1Camille Laurent
  2. 2Hugo Martin
  3. 3Sofia Rossi

Know where every envelope stands

Your dashboard updates in real time as signers open and sign. Resend a link to anyone who has not signed yet.

Partnership agreement 20262 of 4 signed

A sealed PDF, with its proof

Once everyone has signed, Outsigner flattens the signatures into the document and appends an audit trail certificate.

Partnership agreement 2026

Sealed

Built to be trusted

What you sign stays private, and anyone can check that it was never altered.

A seal on every document

When the last person signs, the document is sealed. If anyone changes it later, even by one character, the seal no longer matches.

A proof you can hand over

Every signature comes with a certificate: who signed, when, from where, and that they agreed. One PDF, ready to keep.

Envelope
Partnership agreement 2026
Document seal
46c67b42…
Consent
Explicit consent recorded

Sealed

Private by design

Your documents are stored privately and are only visible to your account and the people you invite to sign.

Learn more

An agile challenger

Legacy providers force complex pricing quotas and bloated contract suites. Outsigner focuses on speed, mathematical proof, and cost control.

Pricing

Legacy providers: Per-envelope quotas. Costs escalate with volume.

Outsigner: Flat rate. Near-zero marginal cost.

Scope

Legacy providers: Heavy enterprise suites, even for a simple agreement.

Outsigner: A tamper-proof seal and a proof-of-signature PDF, included.

Signer experience

Legacy providers: Multi-step recipient onboarding.

Outsigner: One signing link. One click.

Send your first envelope today.

Create an account, upload a PDF and collect signatures in minutes.