Yes! trial version is available of SignRobo and it is free for life time. Using trial version you can sign a file one time. In other words you can say that you can use DSC/PFX/token one time only for signing that file, however you can sign only first page of the file that you uploaded. There is no expiry date of trial version until you consume signing quota provided to you.

No! your original file(s) will not be modified in any case. SignRobo create another file(s) (a copy of your orginal file(s)) in a separate folder.

Yes! you can set a different location of the file(s) that will create after being digitally signed.
Follow these steps -
Choose File(s) => Folder Path => Tick Create Out Folder and name the folder if you want to create a new folder.

Yes! SignRobo supports PFX file format and you can sign file(s) using PFX file.
Follow these steps -
Choose File(s) => Choose DSC as PFX file => Browse DSC

Yes! you can use any provide's token/usb device to sign file(s). SignRobo is not token/usb dependent.

Yes! you can sign multiple files at time.

Yes! SignRobo gives you an option using that you can import a complete folder to sign contianing files.
Follow these steps -
Choose File(s) => Click on Choose Folder => Select the folder and done

Yes! SignRobo gives you an option using that you can protect the file(s) with a password after being digitally signed.
Follow these steps -
Choose File(s) => Tick on Password => Enter the password
If you opens digitally signed file, will ask to enter the password.

Using SignRobo you can sign - Invoices, Agreements, Purchase Orders Legal Documents, HR Documents & Policies Supplementary Invoices, Credit & Debit Notes Contracts, Deeds, Property Documents Form 16 (Part A&B), Tax Retuns, Bills, Litigation Documents etc.

Yes! SignRobo gives you an option using that you can set properties or meta tags for the file(s) that will create after being digitally signed. Properties are, creator name, author name, location, date, reason to sign, keywords etc.
Follow these steps -
Options => Set the prperties here

Yes! using DSC positioning option, you can see preview of the file where DSC going to be signed. And you can move placeholder box to set desired position for DSC.
Follow these steps -
Settings => Click on View Position Of DSC On The Page, and wait untill SignRobo prepares a preview for you.
Move green box to set postion of the DSC.

Yes! you can browse image from computer and set that as validation image.
Follow these steps -
Settings => Set it under DSC background settings.