How to Use a File Date Changer to Correct Metadata

Bulk editing with a file date changer is the process of modifying the metadata timestamps—such as Creation, Modification, and Last Accessed dates—across hundreds or thousands of files simultaneously. This technique is essential for photographers, project managers, and data curators who need to correct timeline inconsistencies. For instance, when transferring media between devices or extracting files from zipped archives, original timestamps often get overridden by the transfer date. The Three Pillars of File Timestamps

When using a bulk date changer, you typically manipulate three specific attributes:

Created Date: The original time and date the file was generated on the file system.

Modified Date: The last time the actual content of the file was edited or saved.

Accessed Date: The most recent time the file was opened or read by the system. Core Strategies for Bulk Editing

Most dedicated tools offer three primary methods to adjust your files in bulk:

Fixed Timestamp Assignment: You input a specific date and time (e.g., 2026-06-08 12:00:00), and the software overwrites the chosen attributes across all selected items.

Relative Time Shifting: Instead of a hard overwrite, you add or subtract a specific duration (e.g., shifting timestamps forward by 2 hours and 15 minutes). This is ideal for correcting camera clock errors across a batch of photos.

Cross-Attribute Copying: You can sync attributes by copying timestamps internally. A common workflow is matching a file’s “Created Date” to its “Modified Date” to restore historical accuracy. Step-by-Step Guide Using Popular Tools

Depending on your comfort level, you can use dedicated graphical software or native command-line terminals.

Method A: Using GUI Tools (e.g., NirSoft BulkFileChanger or FileDate Changer)

For a straightforward, visual workflow, lightweight tools like ⁠NirSoft BulkFileChanger or ⁠FileDate Changer require no installation and process files in seconds.

Import Files: Open the tool and drag-and-drop your target files, or use the Add By Wildcard feature to select a specific format across subfolders (e.g., *.jpg).

Select and Open Actions: Select all imported files (Ctrl + A) and open the Change Time / Attributes menu (F6).

Configure the Edit: Check the boxes next to Created, Modified, or Accessed dates. Choose whether to apply a specific date, add/subtract time, or copy time from another attribute.

Execute: Click Do It or Change Files Date to update the metadata instantly across the batch.

Method B: Using Native Command Line (Windows PowerShell & Mac Terminal)

If you prefer not to download third-party software, your operating system can handle bulk editing natively using scripts. Photography Stack Exchange