Electronic Signature: From Simple Signing to Legal Certification
Introduction#
Electronic signatures are now part of daily business life, from contracts and quotes to legal and banking documents.
But not all signatures are created equal: there’s a big difference between a scanned signature, a digital annotation, and a certified electronic signature.
Let’s take a concrete example: a service provider receives a contract signed by a client.
The document is locked and includes an electronic certificate.
When opened in a free editor such as Stirling PDF, the signature appears to be missing.
In reality, these tools often rewrite the file when saving, which invalidates the original certification.
Let’s explore the different levels of signing, their legal value, and the tools that make it easy and secure.
The different types of signatures#
| Type | Description | Legal value |
|---|---|---|
| ✍️ Scanned handwritten signature | An image of your signature inserted into a PDF. | Low (symbolic proof, easily challenged). |
| 🖋️ Digital signature via PDF tool | A simple “digital” signature using tools like Stirling PDF, Foxit, or PDF-XChange. | Medium (proves intent but not identity). |
| 🔒 Advanced electronic signature | Based on a verified certificate (Yousign, Signature.nc, Universign…). | High, compliant with eIDAS regulation. |
| 🧾 Qualified electronic signature | Issued by a certified European provider, bound to a personal identity. | Very high, legally equivalent to a handwritten signature. |
Free tools for basic needs#
If your goal is simply to “sign” without legal constraints:
- Stirling PDF, PDF-XChange Editor, Foxit Reader — local use, no upload required.
- LibreOffice Draw — insert a scanned image or draw a signature.
- Preview (macOS) or Windows PDF Reader — simple built-in signature options.
⚠️ Be careful: some editors rewrite the document when saving and thus invalidate any existing certificates. Always test the result before sending.
Certified solutions — our selection#
For documents that require legal recognition, use a certified platform compliant with eIDAS. This European standard is recognized in New Caledonia through agreements with France, and is today the reference for the legal validity of digital signatures.
🇳🇨 Signature.nc — the local solution#
Developed and operated in New Caledonia by Digit, Signature.nc is the first electronic signature platform designed for Caledonian businesses. Intuitive and eIDAS-compliant, it allows you to prepare a document, place signature fields, send it to the signatory, and track validation in real time — without your data ever leaving the territory.
It is the natural choice for any professional who wants to keep their documents in New Caledonia, support the local digital ecosystem, and benefit from on-site support.
🇫🇷 Yousign — the French reference#
Simple, intuitive, and eIDAS-certified, Yousign is hosted in France and particularly well-suited for small businesses and independent professionals. Its clear interface and accessible pricing make it an excellent turn-key solution for businesses that need reliability without complex infrastructure.
🇫🇷 Universign — the institutional solution#
Widely used in banking and institutional environments, Universign offers advanced and qualified signature levels with a high level of traceability. Recommended for legally sensitive documents or complex multi-signatory workflows.
These platforms ensure:
- legal validity (timestamp, digital certificate, traceability);
- document integrity (no modification possible after signing);
- complete audit trails;
- data hosted in France or New Caledonia.
Security and confidentiality#
Free tools can be useful, but keep in mind that they don’t always guarantee document confidentiality. Before using any online service, consider how it is funded and where your data is stored. Uploading a professional contract to an unknown website means handing its contents to an unidentified third party.
Our recommendations:
- Avoid free web services that ask you to upload your contracts.
- Prefer solutions hosted locally or in France — be cautious of platforms storing your data outside the European Union.
- Always check integrity verification (Adobe Reader shows a green or blue checkmark if the signature is valid).
- Keep the original certified version of each signed document before any modification.
In summary#
- An image-based signature → convenient, not legally binding.
- A certified electronic signature → secure, verifiable, and legally recognized.
- Choose the tool that fits your context:
- internal approvals → Stirling PDF or LibreOffice,
- client contracts → Signature.nc (local) or Yousign (France),
- legal or banking documents → qualified signature via Universign.
Solution IT approach: supporting your digital transition#
At Solution IT, we help Caledonian businesses implement the right electronic signature solution: process audit, deployment of Signature.nc or Yousign, team training, and local support in Nouméa.
Secure your documents, simplify your workflows, and ensure full compliance with eIDAS.