Bulk Renamer review
A free, open-source batch renamer with preview, validation, and recent-batch undo.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Bulk Renamer is a free, open-source desktop application for batch-renaming files on Windows, macOS, and Linux. It is intended for people who need to apply consistent naming changes within a selected folder, whether that means replacing text, adding prefixes or suffixes, numbering files, changing case, or updating extensions. Native downloads are provided by Infinite Creation, and the workflow centers on configuring a rename operation, reviewing the resulting names, and applying the changes.
The pricing model is straightforward: Bulk Renamer is free, and the published product details describe no paid tiers or trial period. Its feature set covers common batch operations without adding a subscription structure. Find-and-replace supports plain text and regular expressions, while sequential numbering includes a configurable starting point and zero-padding. Case conversion and extension changes add useful control for organizing groups of files, particularly when many names need the same treatment.
Preview and validation are the product’s main safeguards. A live preview shows the proposed names before changes are applied, and conflict validation checks for naming collisions before renaming. Bulk Renamer also supports undo for the most recent successful batch, which gives users a way to reverse the latest operation. It is a strong fit for simple, repeatable file batches across major desktop platforms. Choose it when free, open-source software and cross-platform coverage matter; choose another tool when folder renaming or broader workflow scope is required.
Bulk Renamer pros and cons
- Where it wins
- Free and open-source on Windows, macOS, and Linux
- Regex, numbering, case, prefix, suffix, and extension tools
- Live preview, conflict validation, and recent-batch undo
- Where it doesn't
- Renames files in a selected folder, not folders themselves
- Undo covers only the most recent successful batch
- Desktop workflow is focused on batch file renaming
Bulk Renamer fact sheet, pricing and score →
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