Turbo Bulk Renaming Tool

Turbo Bulk Renaming Tool is an offline Windows app that renames hundreds or hundreds of thousands of files in one pass. You load a folder, stack as many of its 15 rules as you need (find and replace, regex, prefix and suffix, insert at position, sequential numbering, case conversion, EXIF date prefix and more), watch a live preview of every original and proposed name, and only then commit, with a one-click undo waiting if you change your mind.

It works on any file type, not just photos. A two-pass rename engine means Windows never adds (1) or (2) brackets to your names, an automatic rollback protects against a failed batch, and every rename can be logged to CSV, XLSX or TXT as an audit trail. Nothing is uploaded: filenames, folder paths and file contents never leave your PC.

Fifteen rename rules can be combined in a single pass, and the rename log exports to three formats.

Rename Log Export Formats

All active rules are applied to each filename in a fixed sequence within a single pass. Understanding the order matters when combining rules - earlier steps affect the input seen by later ones.

Illegal Windows filename characters (<>:"/\|?*) in the resulting name are automatically replaced with _ as a final sanitization step before the file is written.

Digital photographs contain EXIF metadata recording the exact date and time of capture. Turbo Renamer reads the DateTimeOriginal tag from supported image files and prepends it as YYYYMMDD_HHMMSS_ to the filename base, enabling chronological sorting of photo libraries without any manual effort.

If no EXIF tag is found (screenshots, edited images with stripped metadata, unsupported formats), the file is renamed normally without the prefix and with no error shown.

• Select a folder. Click Select Folder and optionally tick Include subfolders; each file is tracked by its path relative to the folder you chose.
• Filter the file list. Use the File Mask Filter (for example *.jpg or IMG_*); anything that does not match is left out of the preview, the rename and the log entirely.
• Stack your rules. Fill in any combination of Replace, Remove, Insert, Add, Case, Numbering, Sort Order and Extension. Every rule feeds one pipeline pass.
• Preview the result. Each original name appears beside its proposed new name. Turn on Live to refresh as you type, or refresh manually on very large folders.
• Check for conflicts. If two files would end up with the same name, the preview flags them with a warning marker and a conflict count.
• Rename, and undo if needed. Click Rename; a progress bar tracks the run, a log is written in your chosen format and the batch is pushed onto the undo stack.

A single dark-themed workspace keeps everything visible, with no nested menus to hunt through.

• Top bar. Select Folder, the current path, a live file count and the Presets menu.
• Preview list. Original names beside new names, with a Copy button that places the current name list on your clipboard.
• Rules panel. The right-hand column, with labelled sections for Replace, Remove, Insert at Position, Add, Case, Numbering, Sort Order, Extension, Filter Files and Export Log.
• Action bar. Preview, Rename and Undo buttons, a progress bar, and a status line showing files processed and the undo depth. All controls lock while a rename runs, and the work happens on a background thread so the window stays responsive.

Renaming is a pure filesystem metadata operation: no file bytes are copied or written, so file size does not matter and total file count is the main factor. On an SSD, 10,000 files can be renamed in under 10 seconds. The two-pass approach doubles the rename calls, but both passes are OS-level moves. Files are processed one at a time in the selected sort order, so consistency comes before raw parallelism.

EXIF reading is the only step that adds real disk I/O, because each image must be opened, and results are cached per session. To keep the interface from freezing, EXIF is not read during Preview for folders over 100 files; a warning dialog says so, and the actual rename reads EXIF normally for every file.

• CSV is a UTF-8 file with a header row and one row per file, for spreadsheet import and audit trails. XLSX saves every cell as text so Excel cannot misread numeric filenames as numbers. TXT has one entry per line, columns separated by |, for log pipelines and diffs.
• Three data modes apply to every format: Both (original and new name), Original only, or Renamed only, giving nine output configurations.
• Location and names. Logs save to a dedicated subfolder of Documents unless you choose another folder, and each filename includes the sanitized source folder path plus a timestamp.
• Export Only generates a log without renaming anything, ideal for auditing a folder or sharing a rename plan before committing.

• Sequential processing. Files are renamed one at a time in the selected sort order, with no parallel workers, so folders of 100,000+ files take longer than a parallel engine would, though OS-level renaming is fast per file.
• One undo level per session. You can undo the most recent rename but not step back through several successive renames.
• Presets do not store the source folder, so re-select it after loading a preset.

All renaming, previewing and log exporting happens locally on your machine. No filenames, folder paths or file contents are transmitted to any server, and the app does not log, analyze or track your filenames or folder contents. There are no third-party analytics, advertising trackers or background telemetry. Internet is used only for license key validation, and the request contains no personal data, filenames or file content. License data is stored locally in your AppData folder as an encoded file.

Turbo Bulk Renaming Tool is licensed through Gumroad. A free demo lets you try every feature (all rules, preview, undo, presets and log export) with a limited number of rename operations; activating with your purchase email and license key unlocks unlimited renaming. The license is validated once and then cached locally, so it keeps working offline.