How to sign large files with a qualified signature?
Archives, videos, CAD projects, multi-page reports - in many companies a „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 the proCertum SmartSign i SimplySign - two proven solutions available on 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:
How to sign a large file with SmartSign?
- Install proCertum SmartSign (preferably integrated with SimplySign Desktop).
- Under the tab Settings → select a signature format: CAdES external or XAdES external. (More about 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 the 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).- for PDF only - 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 safe. - 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 the proCertum SmartSign, you can even sign documents the size of the 50 MB.
And if convenience and mobility are important - the SimplySign will give you full freedom to 20 MB.
Both solutions are available on podpisano.pl, where we help you choose the best tool for your needs.
In the next article, we'll explain the difference between an internal signature and an external signature, and the formats in which they appear (PAdES, XAdES, CAdES) and when to choose which one. Join us!
Qualified signatures SimplySign and Certum Mini
If you have any concerns or questions, please contact us
We'll answer your questions, find a time that works for you, and match you with an advisor at one of our locations throughout Poland.
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