HOW IT WORKS
Add PDF signature in three steps
- Choose a PDF, upload PNG/JPG or draw and select Use drawing.
- Choose the page, position from left/top and signature box size.
- Create a copy, open it to check placement and download.
ON-DEVICE PROCESSING
Add a drawn or image signature to a PDF locally
Draw a signature or choose a PNG/JPG. Select a page and click the preview or enter percentage coordinates, then download a copy with the image signature.
AN ON-DEVICE COPY
Place your signature where it belongs
Files stay on your device. Keep your original copy.
Or draw with a mouse, pen or finger, then choose Use drawing. Keyboard: upload an image and use the placement fields below.
This is an image signature, not a digital/certificate signature. Editing a signed PDF can invalidate its digital signature.
Source page preview
Choose a PDF to preview it here.
Click the page to place the top-left corner; use percentage fields for precise placement. The image scales to the box. Check the copy before sharing.
PRACTICAL GUIDE
What to know before you add pdf signature
Draw a signature or choose a PNG/JPG. Select a page and click the preview or enter percentage coordinates, then download a copy with the image signature. Draw a signature or choose PNG/JPG, place it on a page preview and create a PDF copy. This is not a digital signature.
Step 1
Choose a PDF, upload PNG/JPG or draw and select Use drawing.
Step 2
Choose the page, position from left/top and signature box size.
Step 3
Create a copy, open it to check placement and download.
HOW THE PDF CHANGES
Technical limits to understand
Note 1
PDF up to 100 MB; signature image up to 5 MB and 20 million pixels.
Note 2
An image signature is not a certificate or digital signature and does not verify identity.
Note 3
The image scales to the box; adjust width and height for your desired proportions.
Note 4
Editing a signed PDF can invalidate existing digital signatures.
TROUBLESHOOTING
If the result is not what you expected
Is this a digital signature?
No. It embeds a visible image without a private key or certificate and does not establish signer identity.
Can I use only a keyboard?
Yes. Upload PNG/JPG and enter the page number and four percentage values to place and size it.
Where is my signature stored?
The image and PDF stay in browser memory for this session; they are not uploaded.
FAQ
Frequently asked questions
Is this a digital signature?
No. It embeds a visible image without a private key or certificate and does not establish signer identity.
Can I use only a keyboard?
Yes. Upload PNG/JPG and enter the page number and four percentage values to place and size it.
Where is my signature stored?
The image and PDF stay in browser memory for this session; they are not uploaded.