A computer system for assisting an Internet user with the completion of at least one first online form field of a first Web page, the first online form field being provided to receive a first digital object from the Internet user, furthermore, the first online form field being associated with at least one metadatum, the computer system comprising: - at least one browser for visiting the first web page through a communication network, - a script for being inserted into the first web page, - digital safes which are associated with second web pages, each digital safe being configured to store at least one first digital object of the Internet user entered in an online form of the associated second web page and being arranged so as to communicate with the script, and - an application programming interface, hereinafter called API, which is arranged so as to communicate with the script, and which comprises a database describing the semantics of the digital objects stored in the digital safe, and wherein, - the script, when executed, ∘ acquires the metadata, ∘ creates a first vector from the metadata, ∘ sends a first message comprising the vector to the API, - the API, when executed, in response to the first message, ∘ identifies a first predetermined semantics associated with the first online form field, hereinafter referred to as SEM1, from the metadata and a pre-trained rule-based machine learning model, ∘ identifies the set of digital safes in which SEM1 is located, hereinafter referred to as compatible digital safes, and ∘ sends a second message comprising the SEM1 and the list of compatible digital safes to the script, - the script, when executed, in response to the second message, queries all or some of the compatible digital safes from SEM1, such that each of said digital safes returns at least one first digital object of the Internet user corresponding to the SEM1 to the script, and - in response to receiving at least one first digital object of the Internet user, the script, when executed, modifies the first web page to invite the Internet user to complete the first online form field with at least the first digital object of the Internet user. - at least one browser for visiting the first web page through a communication network, - a script for being inserted into the first web page, - digital safes which are associated with second web pages, each digital safe being configured to store at least one first digital object of the Internet user entered in an online form of the associated second web page and being arranged so as to communicate with the script, and - an application programming interface, hereinafter called API, which is arranged so as to communicate with the script, and which comprises a database describing the semantics of the digital objects stored in the digital safe, and wherein, - the script, when executed, ∘ acquires the metadata, ∘ creates a first vector from the metadata, ∘ sends a first message comprising the vector to the API, ∘ acquires the metadata, ∘ creates a first vector from the metadata, ∘ sends a first message comprising the vector to the API, - the API, when executed, in response to the first message, ∘ identifies a first predetermined semantics associated with the first online form field, hereinafter referred to as SEM1, from the metadata and a pre-trained rule-based machine learning model, ∘ identifies the set of digital safes in which SEM1 is located, hereinafter referred to as compatible digital safes, and ∘ sends a second message comprising the SEM1 and the list of compatible digital safes to the script, ∘ identifies a first predetermined semantics associated with the first online form field, hereinafter referred to as SEM1, from the metadata and a pre-trained rule-based machine learning model, ∘ identifies the set of digital safes in which SEM1 is located, hereinafter referred to as compatible digital safes, and ∘ sends a second message comprising the SEM1 and the list of compatible digital safes to the script, - the script, when executed, in response to the second message, queries all or some of the compatible digital safes from SEM1, such that each of said digital safes returns at least one first digital object of the Internet user corresponding to the SEM1 to the script, and - in response to receiving at least one first digital object of the Internet user, the script, when executed, modifies the first web page to invite the Internet user to complete the first online form field with at least the first digital object of the Internet user.