How to sign a PDF on your phone
Signing on a phone is usually worse than it should be: the file opens in a viewer that cannot sign, the app store wants an account, and marking up a PDF attachment with a finger produces something nobody would accept. It works properly in the browser. The document is laid out at a readable size, the signature is drawn once and reused, and what comes out is a signed PDF rather than a photograph of a screen.
Drop your document here and sign it now. PDF, Word and Excel all work: a .docx or .xlsx is laid out in your browser exactly as it was written, so there is nothing to convert first. Add a signature, a date, a company stamp or a watermark, then download it sealed. Free to start, no account, and the file is never uploaded to open it.
How to sign a PDF on your phone, step by step
- Open the tool in your phone browser, Safari on an iPhone, Chrome on Android. There is nothing to install.
- Pick the file, From Files, Drive, iCloud or the email attachment. Word and Excel files are laid out and drawn into a PDF here too.
- Draw or type the signature, A finger works. Type it if you prefer, or upload a photograph of a signature on white paper and the background is removed.
- Place, date and download, Drag it where it goes, add the date and a company stamp if needed, then download the signed PDF or share it straight from the phone.
What you get
- No app, no account and no store login standing between you and a signed document.
- The file is read on the phone rather than uploaded, which matters on hotel or client wifi.
- Share straight to WhatsApp, mail or Drive from the phone once it is signed.
- The same audit certificate and verification as signing on a laptop.
- A signature you draw once can be saved and reused on the next document.
Frequently asked questions
How do I sign a PDF on iPhone?
Open the signing page in Safari, pick the PDF from Files, Mail or Drive, draw the signature with a finger and place it, then download the signed PDF. Nothing is installed.
How do I sign a PDF on Android?
The same way, in Chrome or any modern browser on the phone. Pick the file, sign, download.
How do I sign a PDF on an iPhone without an app?
Open the signing page in Safari, pick the PDF from Files or an attachment, draw the signature with a finger, place it, and download. Nothing is installed.
Can I sign on Android the same way?
Yes, in Chrome or any modern browser. The flow is identical.
Is signing on a phone as valid as signing on a computer?
The device does not change the legal position. What matters is intent and the evidence linking the signature to the signer, which is recorded either way.
Can I add a company stamp from a phone?
Yes. Design or pick the stamp, place it beside the signature, and it is part of the downloaded document.
What PDF Verified is, and what it is not
A stamp identifies who issued a document. It is evidence rather than a formality that makes a document binding on its own, and it should only ever be made and applied for a business or an office you are authorised to act for: a mark that imitates another organisation in order to pass a document off as theirs is forgery in most places. Where a registry, a bank or a counterparty requires a particular form of seal, that requirement comes from them.
PDF Verified is a tool for preparing, signing, stamping and checking documents. It is not a law firm, a compliance service or a forensic examiner, and nothing here is legal, financial or compliance advice. Requirements differ by country, by document type and by the party asking, so check what applies to your document before you rely on it, and take advice where the document matters. You are responsible for the documents you create, sign and send, and for having the authority to do so: signing or stamping in somebody else name, or as an organisation you do not represent, is forgery whatever tool is used. To the extent the law allows, we accept no liability for how a document made with this tool is used or relied on. The full position is in our terms of service.