Ant Renamer

Free#9 of 31 in File Renaming Software

Ant Renamer: A capable free renamer for Windows users who need batch rules and previews. Ranked #9 of 31 in File Renaming Software by our editors (7.5/10); pricing: Free plan; best for free Windows essentials.

7.5/10★★★★☆Editor score

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At a glance

• Editor score
  7.5 / 10
• Pricing
  Free plan
• Best for
  Free Windows essentials
• Free plan
  Yes
• Paid from
  Free
• Regex renaming
  Yes
• Founded
  2003
• Facts checked
  22 Sep 2026

• Where it wins

  • Batch-renames files and folders with regex and text rules
  • Uses MP3 tags, JPEG EXIF, and timestamps for filenames
  • Previews changes and supports undo after renaming

• Where it doesn't

  • Windows-only, with no support for other platforms
  • The project is based on older tools
  • Advanced rules may require familiarity with regular expressions

Our verdict on Ant Renamer

Ant Renamer is a free, open-source Windows desktop utility for renaming large numbers of files and folders. It suits users who need more control than basic single-file renaming, including people organizing media collections, standardizing folder names, or applying repeatable changes across batches. Its core operations cover extension changes, text replacement, insertion, movement, and deletion, alongside sequential filename enumeration. Unicode filename support also helps when names use a broad range of characters.

The standout feature is the range of naming inputs and rule types available in one utility. Regular expressions support more precise transformations, while MP3 tags and JPEG EXIF data can generate names from embedded metadata. Timestamp-based naming is also available. Before execution, Ant Renamer shows current and future names, giving users a way to review the planned result. That preview is paired with undo for the last renaming operation, which makes larger batch actions easier to review and reverse when needed.

Ant Renamer’s main constraint is platform scope: it is designed for Windows, so users working across macOS or Linux should choose a cross-platform alternative instead. The project was founded in 2003 and remains maintained for compatibility, but its tools are described as older. That positioning makes it a practical choice for Windows users who value free, open-source software and a broad set of renaming rules over a newer interface or wider platform coverage. Users seeking straightforward batch renaming with preview, metadata options, Unicode support, and undo should find its feature set well aligned with that need.

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Ant Renamer pricing

Ant Renamer fact sheet

Alternatives to Ant Renamer

• KRenameA capable free Linux renamer for expressions, metadata, folders, and undo.9.0
• Bulk Rename UtilityA feature-rich Windows renamer for precise batch operations, scripting, and metadata rules.8.9
• Name ManglerA focused Mac renamer with advanced rules, previews, reversal, and Dropbox or Box support.8.4

See all Ant Renamer alternatives →

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Featured on iTechGuides

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update