Sign your NDA without uploading it anywhere

How to sign an NDA PDF here, step by step

1. Open the NDA in the signer above by dropping the PDF onto it or choosing the file. The document is displayed by your browser, page by page, and stays on your computer or phone.

2. Scroll to the signature block. It is usually on the last page and looks like “By: ______ Name: ______ Title: ______ Date: ______”, sometimes with a company name above it. A mutual NDA has one block per party; sign only in yours.

3. Create your signature. Draw it, or type your name and pick a style, then place it on the signature line and resize it so it sits on the line without covering text.

4. Complete the block. Add your printed name exactly as written in the agreement, your job title if you sign for a company, and the date. If the NDA asks you to initial every page or a handwritten change, add your initials there too.

5. Download the signed PDF, send it to the person who sent you the NDA and keep a copy. If they have not signed yet, ask for the countersigned version back so you hold the fully signed agreement.

Signing for yourself or for your company

If the NDA names you personally, sign with your own name and leave the title empty. If it names a company, you sign as its representative: the signature line belongs to the company, and your name and title show who signed for it. Only sign for a company if you are authorised to commit it to contracts; if you are not sure, ask who in the business signs NDAs. The guide on how to sign an NDA covers name, title and “on behalf of” wording in detail.

Is an electronically signed NDA valid?

In most countries, yes. In the United States the federal ESIGN Act says a contract may not be denied legal effect solely because an electronic signature was used to make it. In the EU, the eIDAS Regulation says an electronic signature may not be denied legal effect or be refused as evidence just because it is electronic. For England and Wales, a 2019 Law Commission report confirmed that an e-signature can validly execute a document. NDAs are ordinary commercial contracts and are not among the documents these laws carve out, such as wills.

The signature you add here is a simple electronic signature: your signature image, name and date placed on the PDF. That is how most NDAs are signed. It is not a certificate-based or qualified signature, so if the other side insists on a particular signing platform or a certified signature, use what they ask for.

A two-minute check before you sign

Read the definition of confidential information: it should cover what is actually being shared, not everything you ever learn. Check the purpose clause, which limits what the information may be used for. Look for the usual exclusions for public information, things you already knew and work you do independently. Find the duration and whether it is a fixed number of years. Then look for clauses that are not about confidentiality at all, such as a non-compete, a non-solicitation promise or a fixed penalty, and ask about them before you sign.

Asking for a change is normal. A request to shorten the term, narrow the definition or remove a non-compete is routine, and a reasonable counterpart will not be surprised. Signing an NDA is not dangerous in itself; the risk sits in specific clauses, which is why the red-flags guide goes through them one by one. This is general information, not legal advice.

Why upload-free signing suits an NDA

An NDA often names the project, the parties and sometimes the secret itself. Many online signing services work by uploading the document to their servers, which creates exactly the kind of extra copy an NDA is meant to prevent. NDAPDF renders the PDF with pdf.js and writes your signature into it with pdf-lib, both running in your browser. What reaches a server is what any website sees: standard server logs, analytics only if you accept cookies, and your email and payment details if you subscribe. Never the NDA.

Sources

• 15 U.S.C. § 7001 (ESIGN Act): validity of electronic signatures and contracts
• 15 U.S.C. § 7003: documents excluded from the ESIGN Act
• eIDAS Regulation (EU) No 910/2014, Article 25: legal effect of electronic signatures (EUR-Lex)
• Law Commission (England and Wales): Electronic execution of documents, 2019