Signing a PDF without printing it
The traditional route — print, sign, scan, email — exists because signatures used to require ink on paper. It costs a printer, a scanner and twenty minutes, and the scanned result is usually a grey, slightly crooked image that looks worse than the original document.
A practical digital signature is simply an image of your signature placed on the page. It is accepted for the overwhelming majority of everyday documents: offer letters, rental agreements, invoices, GST filings, bank forms, school permission slips, courier receipts and internal approvals.
What it is not is a cryptographic digital signature certificate. Those use private keys and a formal certificate authority to prove that a document has not been altered after signing, and they are required by law for a small number of specific filings. For everything else, a signature image placed accurately on the page is what people mean by “eSign” in day-to-day use.
Which method produces the best-looking signature
Drawing with a finger on a phone produces a signature that looks like your real one, which matters when a clerk compares it with the signature on your ID. The canvas is pressure-insensitive, so strokes are uniform, but the shape is genuinely yours.
Typing your name in a script font gives a clean, consistent result that looks deliberate rather than rushed. It is ideal for formal documents where legibility is expected, and it is the fastest option on a desktop with no touch screen.
Uploading a photo of your signature on paper is the best choice when you already have a good signature somewhere. Sign on plain white paper with a dark pen, photograph it from directly above in daylight, and let the clean-up option strip the paper’s grey cast. The result is a crisp black signature with a transparent background.
Whichever you choose, make the signature large enough. A signature crammed into 15% of the page width looks like an oversight; 25% to 35% reads as a deliberate, confident signature.
Placing the signature correctly
The preview shows the real page, so you can see exactly where the signature will land — on the ruled line, inside the signature box, or beside the date field.
Drag it into position, then use the corner handle to resize. The aspect ratio is locked, so your signature is never stretched or squashed. The “Centre it” button resets the position if you lose track of the overlay while zooming.
Multi-page documents use the ◀ ▶ buttons to move through pages. This matters more than it sounds: the signature line on page 14 is often in a different position from the one on page 1, and you want to place it using the actual page rather than guessing at percentages.
If you need the signature in the same relative position on every page, choose “Every page” in the options. It is the right choice for initialling a long contract on each page, and the wrong choice for a document that has one signature block at the end.
Is a digital signature legally valid?
In India, the Information Technology Act of 2000 gives legal recognition to electronic signatures, and for most commercial and administrative purposes an electronically signed document is treated as signed.
There is an important distinction, though. An electronic signature — the kind this tool creates — is a digitally placed image of a signature, and it is accepted wherever the parties agree to it, which covers contracts, invoices, HR documents, rental agreements and internal approvals.
A Digital Signature Certificate (DSC) issued under the IT Act is a different thing: it uses a cryptographic key and a certifying authority, and it is required for specific filings such as income tax returns, MCA company filings, trademark applications and some court submissions.
So: for a rental agreement, an offer letter or a supplier contract, an image signature is standard practice. For a tax return or a company filing, you need a DSC. This tool is designed for the first case, and it says so plainly rather than pretending otherwise.