"Is a digital seal legally valid?" is one of the first questions people ask when they move stamped paperwork to PDFs. The honest answer is that it depends on what you mean by "digital seal," which country's law applies, what kind of document it is, and what the receiving party will accept.
This guide gives a plain-language overview of the main frameworks, explains the difference between certificate-based electronic seals and stamp images, and lists the questions to settle before you rely on either. It is general information, not legal advice. Laws change and differ by jurisdiction and sector, so confirm your specific requirements with counsel, your compliance team or the authority that will receive the document.
Two very different things get called "digital seals."
A stamp image is a picture of a seal or stamp, such as a company seal, a notary-style layout or an "APPROVED" mark, saved as a PNG, SVG or PDF and placed on a document. It shows identity or status visually. It does not prove who placed it, and it does not reveal whether the document was changed afterward. A stamp image made with any design tool, including SealsDigital, is artwork only.
An electronic seal or signature in the legal and technical sense is data linked to a document, usually created with a digital certificate and cryptographic keys. Verification software can show which certificate was used and whether the content has changed since it was sealed or signed. This is what most laws mean when they talk about advanced or qualified electronic signatures and seals.
Most detailed legal requirements concern the second kind. The first kind is mainly a visual convention, and our comparison of covers the technical differences in more depth.
The EU's eIDAS Regulation sets common rules for electronic identification and trust services across member states. A few points are well established:
- It distinguishes electronic signatures, used by natural persons, from electronic seals, used by legal persons such as companies and public bodies.
- Both come in three levels: electronic, advanced and qualified. An advanced seal must be uniquely linked to the organization, capable of identifying it, created with data under its control, and linked to the sealed data so that any later change is detectable.
- A qualified electronic seal is an advanced seal created with a qualified seal creation device and based on a qualified certificate issued by a qualified trust service provider. It enjoys a legal presumption of the integrity of the data and the correctness of its origin, and a qualified seal from one member state is recognized as qualified in the others.
- An electronic seal cannot be denied legal effect or admissibility as evidence solely because it is electronic or does not meet the qualified requirements.
eIDAS has also been revised to add a framework for European Digital Identity Wallets. If you operate in the EU, check the current text and any national rules that apply to your document type.
In the US, two laws do most of the work:
- The federal ESIGN Act provides that a signature, contract or record relating to a transaction in interstate or foreign commerce cannot be denied legal effect solely because it is in electronic form.
- The Uniform Electronic Transactions Act (UETA), adopted in most states, sets similar rules at the state level.
Both laws are technology-neutral. They do not require a particular kind of certificate or seal. Instead, practical questions come to the fore: did the parties agree to transact electronically, can the signature be attributed to a specific person, and are the records retained accurately? Both laws also exclude certain documents, such as wills, and ESIGN carves out others, including many family law and court documents. Some consumer notices have extra consent or delivery requirements.
Notary seals are a separate matter governed by state law. Each state decides whether and how notaries may perform electronic or remote online notarizations, what their seal must contain and, in many states, which technology platforms may be used. A stamp image made in a design tool is not a notary seal. Only a commissioned notary following their state's rules can notarize a document.
Many other countries have their own electronic signature laws, and some give special weight to company seals or registered chops. In some places a company seal is optional for most documents; in others a registered seal is still expected for specific filings, contracts or bank instructions. Requirements can also differ between private contracts and submissions to government agencies or courts. If a document crosses borders, check the rules on both sides and ask the receiving party what they accept.
Work through these with your counsel or compliance team:
- What does the document need to prove? Origin, integrity, consent, or simply status?
- Who is signing? An individual (a signature) or the organization (a seal)?
- Which law governs? Consider where the parties are and where the document will be used.
- Is the document type excluded or specially regulated? Wills, court filings, notarized documents and certain regulated records often have their own rules.
- What will the recipient accept? A bank, court, registry or customer may require a particular signature level or provider.
- How will it be verified and stored? Plan how someone will check the signature years from now and how long the record must be kept.
Stamp images remain practical whenever the goal is a clear visual cue rather than legal proof:
- intake marks such as "RECEIVED" with a date,
- internal routing and status marks like "REVIEWED," "FILED" or "COPY,"
- branding on letters, certificates of completion and customer documents,
- a visible mark placed beside a certificate-based signature, where your signing platform supports a custom appearance.
Legal teams often keep their own conventions for filed, received and copy marks, and the are a starting point for those layouts. The can help a commissioned notary plan a physical seal, but the final content and format must match the requirements of the notary's commissioning state.
- Presenting a stamp image as a legally binding signature or a verifiable seal.
- Creating a stamp that imitates a government, court or notary seal you are not authorized to use.
- Placing a director's or notary's stamp image on documents without their knowledge and approval.
- Storing stamp files in places where anyone can copy them.
- Assuming that a document accepted in one country will be accepted in another.
Good records make any later question easier to answer, whether it comes from an auditor, a court or a business partner:
- Keep a register of approved stamp images, what each one means and who may use it.
- Store signed originals in a system that preserves them unchanged, not only as printouts or flattened copies.
- Keep the validation reports or audit trails produced by your signing platform alongside the documents.
- Follow the retention periods that apply to each document type.
- Retire old stamps and seals promptly when company names, addresses or officers change.
For day-to-day stamp workflows outside the legal sphere, browse our .
Is a stamp image on a PDF legally binding?
It can be in some contexts, but not because of the image. Under laws such as ESIGN and UETA, an electronic symbol adopted with the intent to sign can count as a signature, yet a pasted image offers little evidence of who applied it or whether the document changed. For anything important, use a signing method that your counsel and the recipient accept.
What is a qualified electronic seal?
Under eIDAS, it is an advanced electronic seal created with a qualified seal creation device and based on a qualified certificate from a qualified trust service provider. It carries a legal presumption of data integrity and correct origin and is recognized across EU member states.
Does my company still need a physical company seal?
It depends on the jurisdiction and the document. In many places companies can sign without a seal, while in others a registered seal is still expected for certain filings or contracts. Check local company law or ask counsel before you drop or replace a seal.
Can I make a notary stamp online?
You can design a layout, but only a commissioned notary may use a notary seal, and its content and format must follow the commissioning state's rules. Some states also control who may manufacture notary seals, so check your state's requirements before ordering one.
