How-to

How to sign and send documents, step by step

Step-by-step guides with video: sign a PDF on any phone or computer, send documents for signature, collect signatures in order and verify a signed copy.

• How to sign a PDF on your iPhone, no app needed

  Open attest.datahubz.com/sign in Safari, sign in with your email and set up your signing key with Face ID once; then tap Sign a document yourself, upload the PDF, place your signature, sign with Face ID and download the signed copy: Attest runs in the browser and signs with a passkey, so there is no app to install and nothing to print. Signing a PDF you upload yourself uses one of your documents (2 free in total, then $5 a month for 20), while signing a document someone sends you through Attest is always free.

• How to send a document for signature

  Upload the PDF, add each signer's email address, place their fields and send: each signer gets a private link and approves with a passkey only they control, with no account and no cost to them. With Attest, the document is end-to-end encrypted in your browser before upload, and when the last person signs, every party gets the same sealed copy that anyone can verify.

• How to sign a PDF on Android, no app needed

  Open attest.datahubz.com/sign in Chrome, sign in with your email and set up your signing key once with your fingerprint, face or screen lock; then tap Sign a document yourself, upload the PDF, place your signature, sign with your passkey and download the signed copy: Attest runs in the browser and signs with a passkey, so there is no app to install and nothing to print. Signing a PDF you upload yourself uses one of your documents (2 free in total, then $5 a month for 20), while a document someone sends you through Attest is always free: tap Review and sign in their email, set up a passkey with your screen lock, sign once the sender releases it, and download the signed copy from the same link.

• How to sign a PDF on a Mac

  Open attest.datahubz.com/sign in Safari or Chrome, sign in with your email and set up your signing key once with Touch ID (or your iPhone, if your Mac has no Touch ID); then click Sign a document yourself, upload the PDF, place your signature, sign with your passkey and download the signed copy. Unlike a signature image added in Preview, the signature comes from a passkey only you control and the signed copy proves itself to anyone; signing a PDF you upload uses one of your documents (2 free in total, then $5 a month for 20), and signing a document someone sends you through Attest is always free.

• How to sign a PDF on Windows

  Open attest.datahubz.com/sign in Edge or Chrome, sign in with your email and set up your signing key once with Windows Hello (your face, fingerprint or PIN) or your phone; then click Sign a document yourself, upload the PDF, place your signature, sign with your passkey and download the signed copy. The signature comes from a passkey only you control, not ink drawn on the page, and signing a PDF you upload uses one of your documents (2 free in total, then $5 a month for 20), while signing a document someone sends you through Attest is always free.

• How to sign with Face ID, Touch ID or Windows Hello

  Set up a passkey once, from your signing link or Attest's Security page, then approve each signature with Face ID, Touch ID, Windows Hello or a PIN, usually the same check you use to unlock your device: with Attest, the passkey itself makes your signature, over a statement naming the exact document and everything you entered. Apple, Google and Microsoft each say your face or fingerprint data stays on your device; it only unlocks the passkey, and Attest receives the signature the passkey makes.

• How to collect signatures in a set order

  Add your signers in the order they should sign and choose In order under Signing order: Attest emails only the first signer (no one, if you sign first, until you have signed in the dashboard), emails each next signer as soon as the previous one signs, and shows "Not your turn yet" to anyone who opens their link early. You can sign first or last yourself, in the dashboard with no email, follow each turn on the document's row, and when the last person signs every party gets the same sealed copy, which anyone can verify.

• How to get a signature from someone with no account

  Send the document with Attest: your signer opens the private link in their email, sets up a passkey with Face ID, Touch ID, Windows Hello or the device PIN, and signs, with no account to create, no password, no app and nothing to pay. Only you need a free Attest account, and because every document is end-to-end encrypted, your browser releases it to a first-time signer once they have set up their passkey and you approve with yours.

• How to add signature, initials and date fields to a PDF

  Upload the PDF to an e-signature service, choose which signer a field is for, pick the field type and click the page where it goes; when each signer opens the document, they are guided to their own fields. In Attest you place five field types (Signature, Initials, Date signed, Full name and Text) in your browser, up to 200 per document, and each signer's passkey signs a statement naming the fingerprint of what they entered and where each entry sits on the page, so changing or moving an entry afterwards makes verification fail.

• How to send signing reminders and set an expiry date

  Set both when you send the document: choose how often the people who haven't signed are reminded, and, if you want, a date after which the document closes unsigned. In Attest, reminders are on by default every 3 days (or off, every day, every 2 days or every week), go only to the signers whose turn it is, at most 5 times each, and say when the document expires; the expiry date can be up to a year ahead.

• How to sign a document sent to you and send it back

  If the document came as an Attest signing request, click Review and sign in the email, set up a passkey, fill in your fields and sign with it: there is nothing to send back, because every party gets the same signed copy when the last person signs, and it costs you nothing. If it came as a PDF attachment, sign in at attest.datahubz.com, click Sign a document yourself, place your signature, sign with your passkey and attach the downloaded signed copy to your reply, where its Signed with Attest stamp and the evidence and verifier attached inside let the sender check it for free.

• How to download the signed copy and its certificate

  Open the completed document, click View the signed copy and then Download signed copy; for the certificate, open the document's certificate page and click Download certificate (PDF). In Attest, every party downloads the same sealed PDF, decrypted only in their own browser, and both files carry their evidence and an open-source verifier, so each one verifies on its own, even without Attest.

• How to verify a signed document, step by step

  Drop the signed PDF on a verifier and read each check: a genuine copy passes the checks on the original document, each signer's signature and entries, the record anchored on a public blockchain and the pages you see, and a copy that was changed fails. For an Attest document this is free and needs no account: the open-source verifier inside every signed copy runs in any browser and re-makes every page you see from what was signed, and the code on any signature stamp opens a live certificate that re-checks every signature in your browser.

• How to share proof that you signed

  You can share three things, each free for the recipient to check with no account: the signed copy, which is the whole agreement with its own verifier inside; the certificate's link or verification code, when the certificate is public; or a zero-knowledge proof, made with Share proof, which shows that you signed without the document. For the proof, open the completed document in Attest, click Share proof, choose whether to prove that you signed it or that you and another signer signed it, click Create the proof and send the link: the recipient sees your email address, the other signer's if you named one, the date the agreement was completed, and that the proof is valid and where its record is anchored, never the document, its title or its terms.