Information about who is behind this page.
This page explains who runs Fdo., the terms it is offered under and what responsibility its operator assumes. It is not a sealed contract: if you have a specific question you can write in and it gets answered.
Ownership
- Service name
- Fdo.
- Website
- fdo.app
- Contact
- hola@fdo.app
Full tax identification and postal address are provided on request through the contact email.
Terms of use
Fdo. is offered as is: a web page that signs PDFs inside the user's browser. Any person or company can use it for their own documents. The only thing asked is not to use the tool for clearly illegal purposes, such as forging someone else's signature or impersonating a third party.
The signature placed by Fdo. is a simple signature. It is the user's responsibility to check that a simple signature is valid for the specific use of the signed PDF. For filings with public administrations, use the official electronic signature tool issued by the relevant government.
Limitation of liability
Fdo. is offered without an explicit guarantee of uninterrupted operation. The page may occasionally be unavailable due to maintenance or hosting provider incidents. In any case, since the files are not processed on the server, an outage does not jeopardise in-flight documents: each user works with their own PDFs in their own browser.
Reasonable diligence is applied to keep the PDF processing libraries on recent, maintained versions, but no guarantee is made that every generated PDF is byte-for-byte identical to the original (inserting the signature modifies the PDF's internal structure, as any similar tool does).
Intellectual property
The code that runs this page combines proprietary software and open-source libraries with their respective licences (Astro, React, pdf-lib, pdf.js, among others). The editorial content of the pages is written for Fdo.; if you want to reuse parts for your project, write to hola@fdo.app.
Jurisdiction and applicable law
For any dispute relating to the use of Fdo., Spanish law applies and the courts of the operator's domicile are competent, without prejudice to consumer rights where applicable.