Printing a PDF just to sign it and scan it back is a workflow that wastes paper, time, and patience — especially when you are on a phone and nowhere near a printer. Whether it is a job offer letter, a rental agreement, an NDA, or a government application form, you can sign a PDF directly in your browser in under a minute. Doclair's Sign PDF tool lets you draw, type, or upload your signature and place it anywhere on the document, free, with no account required and nothing stored on any server.

How to Sign a PDF — Step by Step

The process is straightforward and works on any device:

  1. Open doclair.in/sign-pdf in any browser.
  2. Upload your PDF by dragging it onto the page or tapping to browse your files.
  3. Choose how to add your signature: draw it with your mouse or finger, type your name in a handwriting-style font, or upload an image of your existing signature.
  4. Click the page where you want the signature to appear. Drag it into position and resize as needed.
  5. Click Apply to embed the signature into the document.
  6. Download the signed PDF — ready to send, attach, or archive.
Your PDF and your signature data never leave your device. All processing happens locally in your browser, which makes this safe for sensitive documents like employment contracts, financial agreements, and legal forms.

Three Ways to Add Your Signature

Different situations call for different signature styles. Here is how each method compares:

MethodHow It WorksBest ForLooks Most Like
DrawSign with mouse on desktop, or finger/stylus on touchscreenAnyone who wants a personalised, handwritten lookA real pen signature
TypeEnter your name; it renders in a cursive handwriting fontQuick signing when appearance is secondary to speedA stylised printed name
Upload imageUpload a PNG or JPG of your scanned handwritten signatureConsistent look across many documents; matches your physical signature exactlyA perfect reproduction of your pen signature
For the cleanest upload, sign on white paper with a dark pen, photograph it in good light, and crop tightly. A transparent PNG with the background removed looks the most professional when placed on a document.

Is a Digital Signature Legally Binding?

Important distinction: a visual signature (like the one added by this tool) is different from a cryptographic digital signature. A visual signature is a graphical representation of your name placed on a document — it looks like a handwritten signature. A cryptographic or PKI digital signature embeds a tamper-evident certificate issued by a licensed certifying authority, providing proof of identity and document integrity. Doclair adds a visual signature. For most everyday contracts, NDAs, HR documents, and informal agreements, a visual signature is entirely sufficient and widely accepted. For documents requiring certified e-signatures with legal identity verification — such as property registrations, court submissions, or certain government filings — consult a lawyer and use a licensed e-sign provider.

Sign on iPhone or Android

Open doclair.in/sign-pdf in Chrome or Safari on your mobile device. Tap to upload from your Files app or cloud storage (Google Drive, iCloud, Dropbox). When you choose the Draw option, you sign directly on the touchscreen with your finger — many users find this produces a more natural-looking signature than drawing with a mouse on desktop, since it closely mimics holding a pen. The signed PDF downloads directly to your device with no extra steps.

If you need to sign PDFs frequently on mobile, add Doclair to your home screen. In Safari on iPhone, tap Share then Add to Home Screen; in Chrome on Android, tap the menu and choose Add to Home screen. It opens instantly like a native app.

After Signing: Protect Your PDF

Once a document is signed, you may want to prevent any further modifications. Encrypting the PDF with a password locks the file so only recipients with the password can open it — useful when sending a signed contract over email or messaging apps. You can also set permissions to prevent editing or printing. Open doclair.in/encrypt-pdf, upload your signed PDF, set a password, and download the protected file.

For an extra layer of assurance, consider compressing the signed PDF before sending — signed documents can be slightly larger than the original, and compression keeps email attachment sizes manageable without affecting the signature appearance.

Frequently Asked Questions

It depends on the jurisdiction and the type of agreement. A visual signature is widely accepted for everyday contracts, rental agreements, NDAs, and HR paperwork in most countries. For documents requiring a certified digital signature with identity verification — such as certain government filings or notarised deeds — you will need a PKI-based digital certificate from a licensed certifying authority.
Yes. The Sign PDF tool lets you place your signature anywhere on any page by clicking the position you want. It works on both fillable PDF forms and flat (non-interactive) PDFs. Fill in any text fields first, then add your signature on top.
Doclair's Sign PDF tool is designed for a single signer. For multi-party signing workflows, one approach is for each person to download the signed PDF and re-upload it to sign in turn. The resulting file carries all signatures visually. For legally binding multi-party e-signatures with audit trails, consider a dedicated e-signature service.
The tool does not store signatures between sessions for privacy reasons — nothing is retained on any server. However, if you draw or type your signature and download the signed PDF, you can re-upload that PDF and the signature is already embedded. Alternatively, save your signature as a transparent PNG image and use the Upload option each time to place it instantly.
Yes. Open doclair.in/sign-pdf in Chrome or Safari on your phone. The Draw option uses your finger or stylus on the touchscreen — many people find touch signing produces a more natural-looking signature than mouse-drawn ones on desktop. The signed PDF downloads directly to your device.