The short answer
Open the signing link in your phone's browser, read the document, and sign with your finger. With AgreeVia the person signing needs no app and no account, and everyone gets the signed PDF at the end, with a record of who signed and when.
Sign a PDF someone sent you
- Open the linkTap the link in your email or message. It opens in your phone's browser.
- Read itScroll through the whole document before you sign.
- Sign with your fingerDraw your signature in the box and confirm.
- Get your copyYou receive the signed PDF, and anyone can check it at agreevia.co.uk/verify.
Need a PDF signed? Send it from your phone
- Upload your PDFOr start from a template, or describe the deal and let AI draft it with Pro.
- Place the signature boxesPut signature, initials, date and name boxes where each person signs.
- Add who signsPick contacts or type an email address. One signer or several.
- Send itThey sign from the link. You see every view and signature in a tamper-evident record.
Why use AgreeVia to sign a PDF
- Nothing to install. Signers use their browser, on any phone or computer.
- No account for the person signing. One less reason for a contract to sit unsigned.
- Proof, not just a picture of a signature. Every view and signature is timestamped and chained into a tamper-evident audit trail, and you can download an evidence package.
- Free to start. 3 documents a month are free, including uploads.
Why not just draw on the PDF?
A signature drawn on a PDF is legally fine for everyday documents, but it leaves no record. Nothing shows who signed, when, or whether the PDF was changed afterwards, and valid isn't the same as provable (are electronic signatures legal in the UK?). A signing link records it for you. See what is a tamper-evident audit trail?
Before you sign
- Read the whole document, not just the page with the box.
- Check names, dates and amounts.
- Keep your own copy of the signed PDF.
- Don't sign something you don't understand. Get advice first.
Questions people ask
Is a signature drawn with my finger legally valid?
For ordinary business documents, yes, as long as you meant to sign. The Electronic Communications Act 2000 makes electronic signatures admissible in evidence, and the Law Commission concluded in 2019 that an electronic signature can be used to sign a document if the signer intends to authenticate it and any formalities are met.
Do I need to install an app to sign?
No. A signing link opens in your phone's browser.
Is it free?
Yes to sign. AgreeVia lets people sign for free from a link with no account; the sender's plan only affects how many documents they can send.
This guide explains the general position in the UK as we understand it on 25 October 2026. The law differs between England and Wales, Scotland and Northern Ireland, and it changes. If something important turns on it, talk to a solicitor or an accountant.
Templates and tools for this
Send your first agreement free
Upload a PDF, a contract, quote or invoice, and send it to be signed from a link, with proof of every signature.
Free for 3 documents a month, no card needed. AgreeVia works in your browser and is live on Google Play. Coming soon to the App Store.