Sign & Self-Attest
PDF Documents
Stop printing documents just to sign them! Upload your PDF, upload a photo of your signature, and place it anywhere. We automatically remove the white background.
Drag the box to place your signature. Use the blue corner to resize.
How to Digitally Sign and Self-Attest PDF Documents Online
If you are applying for a government job, submitting college admission forms, or completing banking KYC online in India, you are probably familiar with this frustrating requirement: "Please upload a Self-Attested copy of your Aadhar Card or Marksheet."
Traditionally, self-attesting a document meant you had to take a physical printout, sign it with a pen, and then pay a cyber cafe to scan it back into a digital PDF. This old process is slow, wastes paper, and reduces the clarity of your document. ReduceSize PDF Signer completely revolutionizes this workflow by allowing you to digitally sign and self-attest your documents directly from your mobile phone or computer, completely free of charge.
How Our Auto-Transparent Signature Works
You might be wondering: "If I take a photo of my signature on white paper, won't it look like an ugly white box on my PDF?"
With other basic tools, yes. But ReduceSize includes an advanced Smart Pixel Manipulator. When you upload the photo of your signature, our engine analyzes the image in milliseconds. It detects the white background of the paper and instantly deletes it, leaving only the dark ink of your signature. This creates a perfect, transparent digital stamp that blends seamlessly into your PDF without covering the text behind it.
100% Offline Privacy: Why We Never Upload Your Signatures
Your handwritten signature and your personal identity documents (like PAN cards and Marksheets) are highly sensitive data. Uploading them to a third-party server creates a severe risk of identity theft and forgery.
To guarantee your safety, ReduceSize is built entirely on a Client-Side Processing Architecture. This means the entire process of uploading the PDF, removing the background from your signature, and embedding it into the document happens exclusively inside your web browser using your device's memory. We do not have cloud servers, which means your signature never leaves your device. It is the absolute safest way to sign a document online.
Step-by-Step Guide: How to Add a Signature to Your PDF
- Upload Your PDF: Click on 'Step 1' to select the document you need to self-attest.
- Upload Your Signature: Sign on a blank piece of white paper, take a clear photo with your mobile phone, and upload it in 'Step 2'. Our tool will automatically remove the white background.
- Drag, Drop & Resize: A transparent signature box will appear over your document. Simply drag it to the correct location (e.g., the bottom right corner). You can use the blue handle to shrink or enlarge the signature to fit perfectly.
- Apply and Save: Click the "Apply Signature" button. The tool will permanently embed the signature into the PDF and securely download it to your device.
Frequently Asked Questions (FAQs)
Is it safe to upload my signature here?
Yes, 100% safe. As mentioned above, we operate on a strict zero-upload policy. Your signature photo and your PDF are processed locally on your phone or PC. They are never sent to the internet.
Do I need to convert my signature to a transparent PNG first?
No! That is the magic of our tool. You just need to upload a normal JPEG or JPG photo of your signature taken on white paper. Our engine automatically converts it into a transparent PNG for you in real-time.
Can I sign multiple pages in the same PDF?
Currently, the signature is applied to the specific page you are viewing. You can use the "Next" and "Prev" buttons to navigate to the exact page that requires your self-attestation before clicking the Apply button.
Will this tool compress my PDF after signing?
The signing tool does not compress your file; it maintains the exact original quality. However, if your signed document becomes too large for an exam portal, you can easily reduce its size using our main PDF Compressor Tool.
Can I self-attest my Aadhar or PAN card using this tool?
Absolutely. This tool is perfect for self-attesting KYC documents. Just upload your Aadhar PDF, place your transparent signature below the card image, and download the self-attested version ready for submission.