Document anonymization
This article walks you through the basic process of anonymizing the first document in the Bluur system.
Adding a document
To get started, add a document to the system. You can do this from Quick anonymization on the dashboard or from the selected project. Select a file from your disk or drag it into the document upload field. After adding the file, the system will begin processing it.
Automatic classification
After uploading the document, Bluur automatically begins data classification.
The system analyzes the document and marks elements that may require protection, such as personal data, contact data, financial data, address data, signatures, identification numbers, and other confidential information.
Field verification
After classification is complete, a document view with marked fields will open.
Before anonymization, check whether the system has correctly recognized the data requiring protection. If necessary, you can delete an incorrectly detected field, move it, or change its size.
Delete the field – hover over the marking and press Delete. Move the field – left-click the field and drag it to another place. Resize the field – drag the square on the edge of the marking.
A detailed description of working with detected fields can be found in the section AI classification.
Data selection
At the anonymization stage, the user can decide which categories of data should be hidden in the document.
This is done using the sliders visible next to individual data categories. If a category is turned off, the fields assigned to that category will not be anonymized.
If you want to hide an additional fragment of the document that was not marked by the system, you can manually select your own area for anonymization.
Perform anonymization
To perform anonymization, click the Anonymize.
The system will overlay black boxes on all active areas selected for anonymization. This means that fields detected by the system and additional areas marked manually by the user will be hidden.
At this stage, the user can undo saved changes in the system and restore the document to the classification stage. The ability to undo changes does not apply to downloaded files. In the anonymized output file, anonymization is always irreversible.
Downloading a document
After anonymization is complete, download the finished file.
The anonymized document does not overwrite the original file on the user's disk. The user downloads it as a new file with the suffix _redacted_data and the anonymization date. E.g., contract_redacted_data_2026_03_31.pdf.
Document archiving
After anonymization, you can archive the document.
Archiving removes the original source document from the system. Only the anonymized version of the document remains in the system.
More information about storing and deleting documents can be found in the section Document retention.
After archiving the document, it is no longer possible to return to editing it in the system. Before archiving, make sure you have the original file on your disk if you may need future access to the data removed as a result of anonymization.
Summary
To anonymize your first document, add a file to the system, check the AI classification results, proceed to the anonymization stage, choose the scope of data to hide, and click Anonymize. After the process is complete, download the finished anonymized version of the document.
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