Question 1

Does stamping change my original document?

Accepted Answer

No. Juno Rocket never rebuilds or retypes your PDF. Each stamp is added as a new layer at the end of the file, and everything that was already there stays exactly as it was, down to the last byte. Think of it like adding a signed slip to the back of a sealed folder, rather than opening the folder and reprinting its pages. Anyone who has the original file can confirm that nothing in it was changed.

Question 2

Why does it matter that the original isn't rebuilt?

Accepted Answer

Many PDF tools add a stamp by quietly creating a brand-new copy of the whole file. The page looks the same, but behind the scenes everything has been rewritten. That breaks any digital signatures already on the document and can remove the markers that show it meets archiving standards. Because Juno Rocket only adds to the file, those signatures and markers stay intact.

Question 3

Does Juno Rocket need to open or read my documents?

Accepted Answer

Only enough to place the stamp correctly. The system looks at the file's layout information: how many pages there are, their size and orientation, and whether the document is signed, locked or password-protected. It does not display your pages, read the wording for any purpose, or change any existing content. No person views your documents as part of stamping.

Question 4

My PDF is already digitally signed. Will stamping break the signature?

Accepted Answer

No. On signed documents, stamps are added as a locked layer that sits on top of the page, without touching the signed content. The existing signatures remain valid. If you open the file in Adobe Acrobat, it may note that "annotations were added" after signing. That is expected: it simply records that a stamp was added, which the signature rules allow.

Question 5

What if a document is locked against changes?

Accepted Answer

Some PDFs are certified by their issuer with a rule saying they must not be changed, or may only have forms filled in and signatures added. Adding a stamp to these would break that certification. So Juno Rocket does not stamp them. The document is returned exactly as it was, with a clear message explaining why, and the rest of the batch carries on as normal.

Question 6

Can you stamp password-protected PDFs?

Accepted Answer

No. Changing a protected PDF would require its password, and Juno Rocket never asks for or stores document passwords. The document is returned unchanged with a message, so your team can send an unprotected copy instead.

Question 7

Our documents are archive-ready PDFs (PDF/A). Will they stay compliant?

Accepted Answer

Yes. Stamps are created to follow the archiving rules: the lettering is embedded in the file, and the stamp is set to appear when printed. The oldest version of the standard, PDF/A-1, does not allow see-through effects, so on those files stamps are printed in solid ink, and stamp images with transparent backgrounds are not accepted.

Question 8

Can someone move, edit or remove a stamp after it has been applied?

Accepted Answer

In everyday PDF viewers, no. Stamps are locked, so they cannot be dragged, resized or edited, and they print with the document. As with any file, someone with specialist editing software could still try to alter it. If they do, the change shows up when the document is checked (see below).

Question 9

How can I tell if a stamped document was changed later?

Accepted Answer

Juno Rocket gives you three independent checks: The original is still inside. Every stamped file begins with the untouched original, so comparing the two shows whether only stamps were added. Each stamp remembers what it was added to. When a stamp is applied, it records a digital fingerprint of the document at that moment. If anything earlier in the file is changed afterwards, the fingerprint no longer matches. Our records keep the fingerprints too. For every stamping step we log the document's fingerprint before and after, so any copy presented later can be compared with what was actually approved. Juno Rocket's verification runs these checks and shows the result for each stamp.

Question 10

What is a “digital fingerprint”?

Accepted Answer

It is a short code calculated from every byte of a file (we use the SHA-256 standard). Change even a single character and the code becomes completely different, and it is not practically possible to make a different file with the same code. Comparing fingerprints is a quick, reliable way to confirm two files are identical.

Question 11

Is the verification strong enough to prove integrity to an outside party?

Accepted Answer

The checks above reliably catch alterations, and our audit records show what was approved and when. They do rely on our records, though, because a determined forger could also rewrite the fingerprints stored in the file itself. Stamps are not digital signatures, so a PDF reader cannot confirm them independently.

Question 12

Who decides which stamps a person can use?

Accepted Answer

Juno Rocket keeps the list of who may apply each stamp, agreed with your administrator: a manager's name stamp for that manager only, a department stamp for that department, and the company seal for authorised signatories. Your own system only tells Juno Rocket who is logged in. It cannot give anyone extra stamps, and any request for a stamp a person isn't allowed to use is refused.

Question 13

Can employees download or copy the company seal?

Accepted Answer

No. Users only ever see small previews marked "SPECIMEN". The real stamp is drawn into the document by our server at the moment of stamping, so there is no clean copy of the seal for anyone to save or reuse.

Question 14

What are dynamic stamps?

Accepted Answer

Stamps such as "Received" or "Finance: Approved" that fill in details automatically when they are applied: the date (Qatar time) and the name of the person stamping. Nobody types these in, so they cannot be backdated or attributed to someone else.

Question 15

Where can stamps be placed?

Accepted Answer

On the first page, the last page, every page, or specific pages (for example pages 1, 3 to 5 and the last page). On each page, choose a corner, an edge or the centre, or give an exact position. Positions follow the page as you see it, so stamps stay upright on landscape and rotated pages too.

Question 16

Will a stamp cover a stamp from an earlier approver?

Accepted Answer

No. Juno Rocket finds the stamps already on the page and places the new one beside them, so every approver's stamp stays readable. If a corner is completely full, the stamp is still applied and you are told it overlaps.

Question 17

What happens when a stamp is replaced?

Accepted Answer

The old stamp is retired. It stays on record, so documents stamped with it can still be traced, but it can no longer be applied to anything new.

Question 18

Is every stamping action recorded?

Accepted Answer

Yes. For each stamp we record who applied it, which stamp, on which document and pages, at which approval step, and exactly when, along with the document's fingerprint before and after. Records are only ever added, never edited.

Question 19

Can dynamic stamps show names in Arabic?

Accepted Answer

No. Dynamic stamps currently show names written in English letters only.

Question 20

How do documents get from our system to Juno Rocket?

Accepted Answer

Your system sends them directly to ours over a secure connection, using a secret key that only the two systems know. Your staff's web browsers never hold that key. Your system can include each document's fingerprint, so we confirm it arrived unchanged before stamping. If we collect documents from a link, we only accept secure links from web addresses you have approved in advance. Each document is handled on its own: one refusal never holds up the rest of the batch.

Question 21

How do stamped documents get back to our system?

Accepted Answer

Your system either receives the stamped file straight away in the reply, or collects it from a private link that works only for that file and expires after 30 minutes. The stamped file then replaces the previous version in your system, ready for the next approver.

Question 22

Do you keep copies of the documents our system sends for stamping?

Accepted Answer

No. A stamped file is held only until your system collects it, for 30 minutes at most, and is never saved to disk. Our audit records keep the details of each stamping action and the documents' fingerprints, not the documents themselves.

Question 23

How does Juno Rocket work?

Accepted Answer

Upload your PDF, drag and drop your signature and seal onto the document, and download the finished file. Juno Rocket can also be connected to your own system, so approvers stamp documents in the workflow they already use.

Question 24

Can I sign multi-page documents all at once?

Accepted Answer

Yes. You can place your signature on a single page or duplicate it across every page with one click.

Question 25

Can I upload my own company stamp and signature?

Accepted Answer

Yes. In your settings, you can easily upload your official signature and company seal in PNG or SVG format.

Frequently asked questions

Originals stay untouched

Signatures stay valid

Changes are detectable

Your original documents

Tampering and verification

Stamps, permissions and approvals

Connecting your system and handling data

General

Ready to start signing?