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HomeExpert ReportsWeb Content Certification
COMPUTER FORENSICS · CHAIN OF CUSTODY
100% online process desde 139,00 €

Notarial and Expert Certification of Web Content

Secures what's published online before it disappears, backed by notarial certification or an expert report.

Online content can be edited or deleted within minutes, and a screenshot proves nothing. Here we combine two tools: the notarial deed, which provides official certification of what was published and when, and the expert report, which adds technical analysis of the server, headers, and traceability. We advise you on which one your case needs, or both.

Notarial deed with official certification of published content
Expert report with technical server analysis
Urgent action in case of risk of deletion
Websites, social media, marketplaces, and online ads
Full page archive, not mere screenshots
Valid in court and before platforms
Instant WhatsApp OR CALL US 930 485 101
ONLINE REQUEST
Reply < 2 h
Request: Web Content Certification
Client type
Your data is protected and secure
Law 11/2023
The same legal validity as signing in person
Registered
Practising notaries of the Notarial Association of Spain
4,7 / 5
Average rating from more than 1.000 clients
< 2 h
Average response time to a request

When might you need it?

The most common cases for this procedure

Defamation and reputation
Harmful posts on websites, forums, or social media, preserved before they are removed.
Plagiarism and intellectual property
Copying of text, images, designs, or code published on your website.
Misleading advertising
Offers and terms that the company withdraws once you file a claim.
Unfair competition
Use of your brand, false comparisons, or unfair solicitation published online.
REQUIREMENTS FOR THIS PROCEDURE
The content must be publicly accessible at the time of the certification
Provide the exact URLs (not searches or approximate paths)
Act quickly: deletion makes the loss of evidence irreversible
For private content (direct messages), a device forensic examination is required, not web certification
DOCUMENTS YOU WILL NEED
01List of exact URLs to be certified
02Description of what needs to be recorded (text, images, dates, comments)
03Purpose (judicial proceedings, prior demand letter, claim to platform)
04Reference screenshots if available, only for locating the content
REGULATIONS: Notarial Law art. 199 (attestation deeds) LEC arts. 299 and 384 LO 1/1982 (honor, privacy, and image rights) DSA Regulation EU 2022/2065 (content removal)

How does the process work?

From request to signed document, with no travelling

1 Urgent request 2 Choosing the instrument 3 Verifiable capture 4 Delivery of evidence
1
Urgent request
⏱ 2-24 h
In case of risk of deletion, we prioritize action within the same day; afterward, there's nothing left to certify.
2
Choosing the instrument
⏱ 2 h
Notarial deed, expert report, or both, depending on who and what needs to be proven.
3
Verifiable capture
⏱ 24 h
Documented browsing, full page archive, HTTP headers, and server data.
4
Delivery of evidence
⏱ 24-48 h
Deed with official certification and/or expert report with annexes, ready for court or a demand letter.

Clients who have already done it

Verified reviews of this service

4,7★★★★★
★★★★★ES
"Una web publicaba acusaciones falsas sobre mi negocio. Certificamos todo antes de que lo borraran y fue la base del requerimiento y de la demanda posterior."
DF
Diego F.
Reputación · Madrid
★★★★★EN
"Our product descriptions and photos copied wholesale on a competitor site. The certification captured everything before they removed it. Case won."
OH
Olivia H.
Copyright · Barcelona
★★★★★ES
"La oferta desapareció de la web justo cuando reclamé. Ya la teníamos certificada notarialmente con fecha. No pudieron negarla."
RM
Rocío M.
Publicidad · Sevilla
★★★★★PT
"Certificação de páginas onde usavam a nossa marca sem autorização. Rápidos e com um relatório muito completo."
AS
André S.
Concorrência · Porto
★★★★★ES
"Necesitaba el trámite con urgencia y lo resolvieron en tiempo récord. El notario fue muy profesional y recibí el documento al día siguiente."
CR
Carmen R.
España
★★★★★EN
"Excellent service from start to finish. Everything was handled online and the signed document arrived within 24 hours. Highly recommended."
JW
James W.
Reino Unido
★★★★★ES
"Lo gestioné desde Buenos Aires sin viajar a España. Me guiaron paso a paso, incluso con el certificado digital. Todo claro y sin sorpresas."
MG
Mariana G.
Argentina
★★★★★FR
"Démarche réalisée entièrement en ligne depuis Paris. Équipe très réactive sur WhatsApp et notaire très professionnel. Impeccable."
SL
Sophie L.
Francia
★★★★★ES
"El proceso fue mucho más sencillo de lo que esperaba. Atención cercana por WhatsApp y presupuesto cerrado sin costes ocultos."
AM
Andrés M.
España
★★★★★DE
"Die Beurkundung wurde komplett online erledigt. Schnelle Terminvergabe, klare Anweisungen und das Dokument kam am nächsten Tag."
KB
Katrin B.
Alemania
★★★★★IT
"Pratica completata interamente online dall'Italia. Notaio disponibile e documento firmato in 24 ore. Servizio eccellente."
MT
Marco T.
Italia
★★★★★PT
"Tratei de tudo sem sair de Lisboa. Acompanhamento constante por WhatsApp e documento entregue no dia seguinte. Recomendo totalmente."
BS
Beatriz S.
Portugal
★★★★★ES
"Desde CDMX pensé que sería complicadísimo, pero salió a la primera. Videollamada puntual, notario clarísimo y precio cerrado."
GP
Gloria P.
México
★★★★★EN
"Handled from New York without flying to Spain. Clear instructions, fast scheduling and constant updates. Five stars."
SK
Sarah K.
Estados Unidos

Frequently asked questions

What exactly is web publication certification?
It is a notarial deed in which the notary accesses digital content (website, social media, email, etc.), views it, captures it, and certifies its existence, exact content, date, and time. It has full validity as evidence in trials.
What digital content can be certified?+
Any content accessible online: websites, social media posts (Facebook, Twitter, Instagram, LinkedIn), emails, WhatsApp/Telegram messages, forums, blogs, reviews, YouTube videos, cloud documents, etc.
Does the notarial deed have validity as evidence in trials?+
Yes, the notarial deed is a public document with presumption of veracity. Courts admit it directly as pre-constituted evidence, without the need for subsequent ratification by the notary (except in case of founded challenge).
How long does it take to issue the deed?+
Generally between 24 and 48 hours from the request. In urgent cases, we can expedite the process. The timeframe depends on the complexity of the content and notary availability.
Can content requiring login be certified?+
Yes, if you provide access credentials (private email, social media messages, etc.), the notary can temporarily access, certify the content, and remove access. All under notarial professional secrecy.
How much does web publication certification cost?+
The cost includes notarial fees according to tariff (variable by complexity: simple pages vs. multiple URLs or extensive conversations) and our management fees. Request a no-obligation quote specifying what you need certified.
Can content that has already been deleted be certified?+
No, the notary can only certify content accessible at the time of certification. If you foresee content may be deleted, certify it as soon as possible. Previous screenshots taken by you cannot be certified (they would not have public faith).
Does the notary download or save the content?+
The notary documents in the deed what they view and takes screenshots that are incorporated into the deed. They do not download files unless necessary for certification (e.g., PDF document). Everything is reflected in the notarial deed.
Is it useful for proving defamation or slander?+
Yes, it is one of the most frequent uses. The notarial deed certifies the defamatory content, its authorship (profile/user), publication date, and URL, allowing criminal complaint or civil lawsuit with solid evidence.
Can content in foreign languages be certified?+
Yes, the notary certifies the content as it appears, including the original language. If you need a certified translation to present it in proceedings, we can also arrange that additional service.
Do I need a notarial deed or an expert report?+
The notarial deed provides official certification of what was published and when: it's direct, fast, and very solid before a court. The expert report adds technical analysis of the server, HTTP headers, and traceability, useful when authorship or hosting is in dispute. In serious cases, both are combined.
What if the content is deleted before it's certified?+
It's lost for good. There's no going back, and this is the number one cause of lost cases. If the content is published and harming you, certify it today, not when you decide to file a lawsuit.
Is the Wayback Machine archive valid as evidence?+
It can help as an indication, but it's a third party without official certification and with irregular coverage. The opposing party will dispute it; a notarial deed leaves no room for that argument.
Can you certify social media posts?+
Yes, anything publicly accessible: posts, profiles, comments, reviews, and ads. Private messages are not covered by web certification, but require a device forensic examination instead.
Is it valid for requesting content removal from a platform?+
Yes, and it greatly improves the response: the DSA Regulation requires platforms to process substantiated notices, and a notarial deed is exactly that.
Do documents signed online have the same validity as those signed in person?+
Exactly the same. Law 11/2023 recognises the full legal validity of notarial documents executed by video call with a qualified electronic signature before a registered notary.
Do I need a digital certificate?+
Yes, to sign electronically you need a digital certificate or an electronic DNI. If you do not have one, we help you obtain it quickly before your appointment, with no additional handling fee.
Can I do it from abroad?+
Yes, the notarial video call works from any country. You only need a stable connection, your valid identity document and a digital certificate.
How much does this service cost?+
The quote includes the official notarial fees set by the Notarial Association plus our handling, fixed before you start and with no hidden costs. Request it with no obligation via WhatsApp or the form.
What if I have questions during the process?+
Our team supports you from start to finish via WhatsApp, phone or email, and the notary answers all your legal questions before signing.
Ready to get started?
Request information with no obligation: we will contact you within 2 hours.
WhatsApp 930 485 101