Rental agreements emailed as PDFs, job offer letters from HR, KYC forms from banks, tenancy contracts from landlords — the moment you receive one on your iPhone, the instinct is to search for an app. But downloading and paying for a PDF signing app just to handle an occasional document is overkill. You can sign any PDF directly in Safari on your iPhone, for free, in under two minutes — no app required.

This guide walks through the exact steps to draw your signature with your finger and embed it into a PDF, right from your iPhone or iPad.

How to Sign a PDF on iPhone — Step by Step

Open Safari and go to Doclair's Sign PDF tool. The entire process runs in your browser — nothing is installed, nothing is uploaded to a server:

  1. Open doclair.in/sign-pdf in Safari on your iPhone or iPad.
  2. Upload your PDF — tap the upload area and select the file from your Files app, or from an email attachment you have already saved locally.
  3. Draw your signature — tap the Draw Signature button. A canvas appears where you can sign with your finger exactly as you would on paper.
  4. Place the signature — the signature image appears on the document. Drag it to the correct signature field and pinch to resize if needed.
  5. Download the signed PDF — tap Download and the file saves directly to your iPhone's Downloads folder inside the Files app.

The output is a single, flattened PDF with your signature permanently embedded — ready to email, share on WhatsApp, or upload to any portal.

Drawing Your Signature on a Touchscreen

For the cleanest result on iPad, use an Apple Pencil to draw your signature — the pressure sensitivity and precision make it look as natural as pen on paper. On iPhone, try signing slowly with your fingertip rather than rushing; you can tap Clear and redo as many times as you need before confirming. If you prefer not to draw at all, use the Type Signature option to render your name in a cursive font instead.

A good-looking signature matters for professional documents. Take an extra few seconds to draw it carefully — you can save the signature for re-use on future documents so you never have to redraw it.

Save Signed PDF to Files App

After tapping Download in Safari, the signed PDF is saved to your iPhone's Downloads folder automatically. To move it elsewhere — iCloud Drive, a specific folder, or a third-party app — open the Files app, navigate to Downloads, long-press the file, and choose Move or Share.

To share immediately by email, long-press the downloaded file in Files, tap Share, then choose Mail or any other app. The signed PDF attaches as a standard document that any recipient can open on any device.

If the document needs to go back to the sender on the same day, the fastest route is: sign in Doclair → Files app → Share → Mail or WhatsApp. You are done in under three minutes from receiving the original PDF.

Sign PDF on Android

The same Doclair tool works identically on Android. Open doclair.in/sign-pdf in Chrome on any Android phone or tablet. Upload from your Downloads folder or Files app, draw your signature on the touch canvas, place it on the document, and download. No Google Play download necessary.

On Samsung tablets with an S Pen, the stylus input gives the same precision as Apple Pencil on iPad — your signature will look exactly like it does on paper.

One Tool, Every Device

Because Doclair runs in the browser, the same tool works across every platform without installing anything:

DeviceBrowserInput Method
iPhoneSafariFinger or Apple Pencil (with adapter)
iPadSafariApple Pencil or finger
Android phoneChromeFinger
Android tabletChromeS Pen or finger
MacSafari / ChromeTrackpad or mouse
Windows PCChrome / EdgeMouse or touchscreen

Your file never leaves your device on any of these platforms — all processing happens locally in the browser's WebAssembly engine.

Frequently Asked Questions

Yes. Doclair's signature canvas works with Apple Pencil on any iPad that supports it. Tap the Draw Signature area and write directly with the Pencil for a precise, natural-looking signature — far cleaner than a finger drawing. The result embeds as a high-resolution image in the PDF.
Apple's Markup tool in Files and Mail lets you annotate PDFs including drawing a signature, but it is limited to image annotations and can distort document layout on some files. Doclair gives you precise placement control — you can drag the signature to exactly the right field — and the output is a clean, flattened PDF suitable for official submission.
In most countries, including India, the UK, the US, and the EU, an electronic signature that clearly identifies the signatory and their intent to sign is legally binding under electronic signature laws. Drawing your signature with your finger or stylus and saving it to the document satisfies this requirement for the vast majority of everyday contracts and agreements.
Yes. After placing the first signature, use Doclair's Sign PDF tool to add additional signature fields. You can also add initials on one page and a full signature on another. Each signature is independently positioned, sized, and placed before you export the final document.
Yes. After downloading the signed PDF to your Files app, open WhatsApp, go to the conversation, tap the attachment icon, choose Document, and select the signed PDF from Files. WhatsApp sends the file without any quality loss. The recipient gets a fully signed, professional PDF document.