OP.Sign: Scan, Sign & Fill PDF

In-app purchases
2.58K reviews
Content rating
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About this app

OP.Sign is an e-signature & scanner app that lets you scan, sign and ask others to sign documents such as PDF, Word, and Docx files securely. 🖋️

OP.Sign app was created for small and medium businesses (SMB’s) who are looking for an all-in-one e sign and scanner app. Business owners can manage their documents and track the activity of signers, including LIVE updates on who signed the documents and who didn’t.

🔐 The most Secure way to Scan, Sign, and fill PDF or Word documents, and Save them on the cloud. Send an encrypted, code protected, document for others to review - your contacts can sign documents without the need to download the OP.Sign mobile app 🔐

Scan documents on the go using your camera, modify and adjust your PDF documents, render anything scannable with our mobile scanner app. Fast, easy, and fully secured.

Easily fill forms and sign contracts or any other document on your mobile. Save your signature and initials for future use and apply it to documents when needed. Import documents from your scans, email, photo gallery, and Share from 3rd party apps from your preferred cloud service (Google Drive, Dropbox etc.)

Share documents with co-workers, contractors, partners, clients, and vendors with ease. Send an encrypted, code-protected document for others to review and sign even if they don’t have the OP.Sign app. Our platform is fully protected; your PDF documents are encrypted and controlled.

Easily share your documents with others, get live updates on who signed the documents, and who didn’t, and track all your signatures in one place. You can share the documents with your contacts by using an email address or via SMS messages, WhatsApp, Gmail, etc.

Manage all your scans and signed documents in one place. Save your document to a secure cloud, request signatures with one click, sign documents with your Initials, or add your signature effortlessly.

OP.Sign is ready to use instantly
* No download - Signers can sign via a web browser - without downloading the app
* No registration - OP.Sign is functional before the user account setup
* No password - Op.Sign requires no password!

The digital signature app can be used for a range of purposes, such as signing a digital contract, NDAs, sales contracts, financial agreements, permission slips, lease agreements, and much more. This digital signature app is essential for digital signature and signature specifications in this digital globe. This e-signature works as a simple sign for document signing, and as an e-signature maker.
Updated on
Aug 19, 2021

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
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Ratings and reviews

2.5K reviews
Miss Lynn
July 25, 2023
EDIT: This is a frequent occurance. I've been trying to open the app for the past hour. I uninstalled and reinstalled it. I had a client back out of signing a contract with me because she could open the contract either. This is horrible. I've tried everything and now I cannot access my signed contracts through the app. Undependable. Find another app.
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Pangolin Labs LTD
March 7, 2023
Thanks for your feedback. We had a rare issue for a few hours on Sunday. The system is up and running as usual. Sorry for the inconvenience due to the very temporarily compromised service...
Vannah Day
September 30, 2021
It is hard to add text to a document because its difficult to move and adjust the size of the text, you need a lot of patience especially if it's a large document. But when you download it to a pdf then open and check it's right all of your added texts will be different sized and not match the work you did. Overall it's frustrating and a horrible experience. Save yourself the time and pain I have already spent trying to use this app.
11 people found this review helpful
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Chelsea Thomas
September 22, 2021
allows you to add text. you can change font size but the text color is blue and you can't change it. allows you to add signature but it's not very sensitive. Will come out sorta looking like your signature but just a little rounded off. but overall it does the job and will allow you to fill and sign any pdf document
15 people found this review helpful
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Pangolin Labs LTD
September 27, 2021
Thanks for the feedback! We appreciate it Glad to let you know that the ability to change font colors is coming very soon.

What's new

• NEW - Type your name and make it your beautiful signature
• Improved performance for faster signing
• Bug fix