Certify your photos in the most simple way.

CertiPhoto is a professional mobile application that certifies pictures taken with your smartphone.

Certiphoto application mobile preuve photo

The mobile digital proof

Originally developed as part of forensics court-expert activities, CertiPhoto can date a photo securely and ensure that it has not been tampered with since the shot was taken. CertiPhoto hence gives probative value to your photographs by establishing a digital evidence of a visual situation, in a particular place, at a particular time.

Each picture you take is encrypted, geolocated, stored on a secure remote server and then sent in a signed email to the user along with a certificate. This certificate is an unfalsifiable PDF document, signed and timestamped by a trusted authority, and has legal value in EU countries.

Preuve photo pour permis de construire

Take a picture

Take a shot easily as you would with any Android smartphone, and add a comment to your photo if you want to.


The app geolocates your picture in seconds by GPS. You can also certify a non-geolocated picture if no GPS signal is found.


Confirm your choices, send the picture and... that's all! You'll get the picture certificate by email in a few seconds.
Photographiez Localisez Certifiez

Digital picture certificate

Each certificate is self-contained, which means all cryptographic data are embedded to be checked with no limit in time. There is no dependency whatsoever with an external entity which could potentially be corrupted, as a Blockchain for instance.

More than just a PDF document

The ISO Standard PDF/A has established itself worldwide since its launch in 2005. It was established to meet the specific requirements for long-term archiving of electronic documents.

  • QR-code validation(1)

    By flashing this code, you can instantly get an attestation of conformity containing the picture details, at any time.
  • Electronic signature and secure timestamp(2)

    This inset provides access to the signature properties of the document, including information from the trusted third party that provided the secure timestamp.
  • Picture data(3)

    Data related to the picture are recorded in this paragraph along with a cyphered security chain.
  • User data(4)

    The distinctive details of the device which took the picture, as well as the identity of its author, are captured here.
Certificat numérique fichier PDF

Secured process

CertiPhoto uses advanced bank-level measures to build a secure channel between your smartphone and certification servers.

Comodo Cybersecurity

Unfalsifiable digital picture certificate

PDF/A-3B document format

Electronic signature

PAdES-LTV compliant prescribed by ETSI TS-102-778 technical specs

Trusted secure timestamp

RFC 3161 timestamp provided by DigiCert, Symantec or GlobalSign

Protected from fake geolocations

Multiple cross-linked control layers

Certiphoto fonctionnalités processus sécurisé

Instant email delivery

Signed using S/MIME protocol

Picture storage

3 years minimum in a secure private cloud

Share link and QR-code check

Unique URL and validation features at any time

Public label

On-demand label proof to affix on public site notices

A trustworthy app

Strict privacy policy, on-demand technical support and advanced features

No ads

The interface does not disturb your user experience with advertising, and your personal data will never be exploited by third parties or for commercial purposes.

24/7 support

Depending on your requirements, CertiPhoto can provide technical support by e-mail and/or phone, as well as several service level agreements.

Scalable REST API

CertiPhoto is a complete information system with a proprietary storage cloud, a powerful API and multiple database management user interfaces.

Business solutions

Thanks to its modular design, the app can easily and securely interface with your company's information system.

You also can order and drive a private certification instance running your own certificates (software or HSM based).

Application professionnelle pour les entreprises

They use CertiPhoto


9000 +


9000 +


320000 +




Three solutions to meet your needs.


10 pictures/month

  • Offered when no credits are left (device-based)
  • No limit in time
  • 3 years private storage cloud
  • No ads


In-app billing

  • 10 - 50 pictures packs
  • From 2,99 to 9,99 € inc. VAT
  • No limit in time
  • 3 years private storage cloud
  • No ads



  • Unlimited pictures
  • Non-binding contract
  • Quarterly billing
  • Access to API with adaptive functions
  • Databases management interfaces (optional)
  • No limit in time
  • Custom period private storage cloud
  • No ads

About the author

Pascal Eric Mayani is a senior IT engineer specialized in information systems management. He works as a legal forensics expert for the Aix-en-Provence Court of Appeals.


Answers to the most frequent questions asked about CertiPhoto.

When you click on 'Take a photo', the app performs multiple integrity checks on your phone and communicates them to the CertiPhoto information system. All data collected before, during and after the shot are encrypted several times per second, compiled at the time of sending, and finally verified upon receipt by the certification servers.

When all these steps are validated, the photo is formatted in a PDF document which will then be signed and timestamped, and finally sent to the user.
Yes. CertiPhoto produces documents with probative value, at least in the French and European courts. They are time stamped, electronically signed and strictly impossible to tamper with.

According to the Directive 1999/93/EC of the European Parliament, the electronic signature [must be] uniquely linked to the signatory, be capable of identifying the signatory, be created using means that signatories can maintain under their sole control, be linked to the electronic document to be authenticated. This is to ensure that any subsequent change in that document is detectable.
You just have to send a paper print of the certificates along with the original files on a USB key, so that the judge will be able to check the cryptographic information contained in the PDF documents.
Every evidence can be challenged about its probative value, whether it's a digital certificate or a bailiff's report. In such a case, CertiPhoto's source code and activity logs are designed to be audited as part of a forensic examination, under terms of a non-disclosure agreement.
Absolutely not. Pictures are timestamped by a secure trusted authority such as DigiCert or GlobalSign, which are among the most important certification services in the world. This is a verifiable and irrefutable mathematical link between your photo and the precise moment it was taken.
The CertiPhoto IT infrastructure is hosted in French data centers. Databases are replicated over three different sites, and collected data are protected with multi-factor authentication.

These information are sealed by daily checksums to ensure their integrity over time, according to a process inspired by the NF Z42-013 French norm. They will never be disclosed to any third parties, except with the agreement of the user or upon a judicial authority's request.

You have a right to view and control your personal data, and may at any time require their consultation or destruction.
No. CertiPhoto constantly communicates with its backend to check how your device is operating when you take a picture. The same goes for geolocation, which combines data from multiple sources for maximum accuracy and reliability.
This forgery technique consists in distorting the reality perceived by the camera lens. It's known in forensics science as "rebroadcasting" and exists since the invention of photography.

CertiPhoto can not detect in real time if you are misleading it, and no other computer system will be able to reliably do so with current technology.

What it can do however, is to collect enough information at the time of the shot to correlate them manually in case of dispute. It will then be possible to demonstrate with a high probability whether the photo was falsified, but only ex-post.
API stands for Application Programming Interface. It's a tool intended to interact with CertiPhoto's databases outside the app. This allows for instance to recover, in a single command line or via a web browser, photos taken by a particular phone, or at a specific location, or between defined dates.

The sorting possibilities are very wide and can be adapted to your needs. These advanced features are particularly useful in the professional area, because they allow a company to overcome the computer management of certified photos.
The app is designed for bilingual French/English use. Other languages may be added in the future depending on demand.
Nothing technically prevents it, but Android currently accounts for nearly 80% of the mobile market. So for now, the author is investing in improving the existing app on this platform, as well as managing his professional customers.
Questions Réponses sur application preuve photo
Télécharger application Android preuve photo sur le Play Store
Category Photography
Current version 1.8.4 (build 176) - May 2019
Size 6.2MB
Compatibility Android 5.0 to 9.0 (API 21+)
Languages French / English
Pricing Free / In-app billing
Provider Google Commerce Ltd


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