How to sign large files with a qualified signature?
Archives, videos, CAD projects, multi-page reports - in many companies the "big file" is an everyday occurrence. But what if such a file needs to be signed qualified electronic signature? Rest assured - it is possible. All you need is the right tool. Today we will show you how to deal with large documents using proCertum SmartSign i SimplySign - two proven solutions available at podpisano.pl.
proCertum SmartSign - support up to 50MB
This tool from Certum (Asseco) designed for computers and can handle really large files. It supports formats:
- CAdES (internal and external),
- XAdES external
- PAdes (internal)
How to sign a large file with SmartSign?
- Install proCertum SmartSign (preferably integrated with SimplySign Desktop).
- Under Settings → select a signature format: CAdES external or XAdES external. (More on signature types in the next article - link).
- Add a file or folder to be signed
- Click "Sign" → select a certificate → enter a PIN.
- Done! You will receive:
- signed file (CAdES/XAdES),
- Or two files: original + signature [.sig].
💡 You can immediately verify your signature in the "Verify" tab.
SimplySign - mobile convenience
Do you have a large file, but don't want to install a reader and mess around with configuration? SimplySign is a fully remote solution - it works on:
- computer (thanks to SimplySign Desktop) - max file size is 50 MB
- smartphone (mobile app).- only for PDF - max file size up to 20 MB
How does it work?
When to choose what?
- A large file, such as an archive with documentation?
Use SmartSign + CAdES/XAdES external - stable and secure. - Want to sign a document on the go, without a reader?
Choose SimplySign - Works mobile and instantly.
To summarize,
Large files and a qualified signature? No problem.
With the help of proCertum SmartSign, you can even sign documents as small as 50 MB.
And if convenience and mobility are important - SimplySign will give you full freedom up to 20 MB.
Both solutions are available at podpisano.pl, where we help you choose the best tool for your needs.
In the next article we will explain how an internal signature differs from an external one, what formats they come in (PAdES, XAdES, CAdES) and when it is worth choosing which one. You are welcome!
SimplySign and Certum Mini qualified signatures
If you have any concerns or questions, please contact us
We will answer your questions, find a date that suits you and an advisor in Gdansk, Gdynia, Krakow, Warsaw or Wroclaw.
You can also write an email from us [email protected].