Documents you sign every day
- Service contracts
- Proposals and quotes
- Non-disclosure agreements (NDAs)
- Work orders and deliverables
How Freelancers use it
When you close a new project
You send the quote and the service agreement in the same message; the client signs before the conversation goes cold.
During the project
Scope changes or addenda get signed in minutes, without burning billable hours coordinating a paper signature.
When you deliver and get paid
The signed contract backs your invoice if a client is late to pay or disputes what was agreed.
Before and after Firmiu
Why choose Firmiu
Get paid sooner
Close the agreement in minutes and start the project with no waiting.
Professional image
Send polished documents with a clear, modern signing process.
Backing on every signature
IP, date and verification are logged in case a dispute arises.
How Firmiu works
Upload your PDF
Upload the document and enter the name and email of the person who must sign.
The signer receives a link
They get an email with a unique link and a verification code.
Signed document
The PDF is signed with its audit trail, ready to download.
Frequently asked questions
- Are signatures with my clients valid?
- Electronic signatures are legally recognized across Latin America, Spain and the US for most private agreements; specific validity depends on the country and document type.
- Does my client need to register?
- No. They sign from a unique link, without creating any account.
- Can I send several documents?
- Yes, depending on your plan, and you can save contacts to send faster.
- Do I need a paid plan to start using Firmiu?
- No. The free plan lets you sign documents each month at no cost — great for trying the flow before you need more volume.
- Can I send the contract from my phone?
- Yes. The whole flow — uploading the PDF, placing the signature field and sending — works right from your phone's browser.
- Does the client need to install anything to sign?
- No. They get an emailed link, draw or upload their signature and confirm with a code — all from the browser, no apps or accounts.
Guide reviewed and updated: July 2026.
Electronic signatures in your country
Related guides
How to get paid faster by signing contracts online
The time between agreeing and signing is time without getting paid. Here's how to shorten it with online signing.
How to keep a client from delaying their signature
An unsigned contract is a half-made sale. Here are tips to get your clients to sign on time.
Free electronic signature: how to start at no cost
Need to sign documents without spending? Here's how to use a free electronic signature and when a paid plan makes sense.
Digital signatures for other professions
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