How to sign a PDF on your phone without printing anything

The classic ritual — print, sign with a pen, scan, email back — is dead weight. You can complete the same loop on a phone in minutes. Here is the honest version of how, plus what a typed or drawn signature means legally.

Step 1: open the document on your phone

When the contract arrives by email or chat, open it in the browser and use the Sign tool, or open the tool first and pick the file. The file is processed on the device; there is no upload step to worry about.

Step 2: draw or type your signature

Draw it with a finger — it looks like your signature because it is. Most tools also offer typed initials. Save the signature once and reuse it; place it over the signature line, resize, and add the date if the form asks for one.

Step 3: download and send it back

Download the signed PDF and return it the same way it came. Keep the sent copy; it is your record of exactly what you signed and when.

Is an electronic signature valid?

In most countries, yes: laws like the US ESIGN Act and the EU eIDAS regulation give electronic signatures legal effect in routine business, and drawing your signature on the document is far stronger evidence than a typed name at the bottom of an email. Exceptions exist for documents that specific laws demand on paper — wills, some real estate deals, court filings in some places. If a counterparty insists on wet ink, they will say so.

One caution

Never sign a document you have not actually read, on any device, with any tool. The signature step is trivial; the reading is the work. No tool, ours included, can do that part for you.