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0001 .. meta::
0002    :description: digiKam Maintenance Tool to Rebuild Fingerprints
0003    :keywords: digiKam, documentation, user manual, photo management, open source, free, learn, easy, maintenance, fingerprints
0004 
0005 .. metadata-placeholder
0006 
0007    :authors: - digiKam Team
0008 
0009    :license: see Credits and License page for details (https://docs.digikam.org/en/credits_license.html)
0010 
0011 .. _maintenance_fingerprints:
0012 
0013 Rebuild Fingerprints
0014 ====================
0015 
0016 .. contents::
0017 
0018 .. figure:: images/maintenance_rebuild_fingerprints.webp
0019     :alt:
0020     :align: center
0021 
0022     The digiKam Maintenance Options to Rebuild the Fingerprints
0023 
0024 Fingerprints are necessary for finding duplicates and similar items and for finding images by sketches. For detailed description see :ref:`the Similarity View section <similarity_view>`.
0025 
0026 This process provides only one option to rebuild the contents in the database: **Scan for Changed or Non-Cataloged Items**. This option will run the rebuild faster to prevent to process already register items in database.
0027 
0028 .. note::
0029 
0030     This process can also be called from the **Similarity View** from left sidebar by the button **Update Fingerprints**.
0031 
0032     .. figure:: images/maintenance_update_fingerprints.webp
0033         :alt:
0034         :align: center
0035 
0036         The digiKam Update Similarity Button from the Left Sidebar
0037 
0038 While the rebuild fingerprints process is under progress, notification on the bottom right of main windows will be visible to indicate the amount of items already done.
0039 
0040 .. figure:: images/maintenance_fingerprints_process.webp
0041     :alt:
0042     :align: center
0043 
0044     The digiKam Rebuild Fingerprints Process Running in the Background