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RIRAGON RENAME · WINDOWS
Rename in batches.
Rename in batches.
Keep it simple.
Riragon Rename is a Windows app that makes it easy to batch rename photos, images, CSV files, documents and more in a folder you select. Intuitive from the start. No manual needed.
Target folder
C:\Pictures\Travel| Before | After | |
|---|---|---|
| IMG_1041.jpg | → | Travel_1041.jpg |
| IMG_1042.jpg | → | Travel_1042.jpg |
| IMG_1043.jpg | → | Travel_1043.jpg |
| IMG_1044.jpg | → | Travel_1044.jpg |
Matched textNew text
Your file contents stay intact.
Only the names change. The data inside your files is never rewritten.
Tested with 100,000 files.
A real 100,000-file rename, followed by independent content checks.
Undo the last batch.
Undo recent operations in order, until you switch modes or close the app.
START SIMPLEChoose. Type.
Choose. Type.
Check, then rename.
Start with a straightforward text replacement.
Simple mode puts everything you need in one view.
- 01
Choose a folder
Choose a folder and check the files inside.
- 02
Enter text and compare
Enter the text to find and replace. Review the changes highlighted in color.
- 03
Apply the batch
Apply the changes, then check the result for each file.
Screens are illustrations of the workflow.
By default, replacement affects the name stem and keeps the extension. Leave the replacement empty to remove unwanted text.
BEFORE A SMALL CHANGE BECOMES A MIX-UPChanged the year.
Changed the year.
Changed the reference number, too?
When the same text appears more than once, replacing it everywhere can change a part you meant to keep.
Warnings help you catch it.
Repeated matches are flagged with “2 matches” and similar warnings. Duplicate names and invalid file names are checked before you apply.
Changed your mind? Undo.
Undo your most recent renaming operations in order when you need to start again.
Undo is available until you switch modes or close the app. Later edits, moves or other file changes can prevent restoration.
Before
report_2024_002024.csv
Planned nameWarning: 2 matches
report_2025_002025.csv
The same text matches twice
Both the year and the reference number will change. Check that this is what you intended before applying.
Duplicate names stop the rename.
See which files have problems and why.
Repeated matches are a warning: you can proceed after checking. Duplicate or invalid file names are errors that block execution.
ADVANCED MODEAdvanced mode included.
Advanced mode included.
More ways to name your files.
Switch to Advanced mode in Options. Choose the naming function you need and set its rules.
- Control replacement ranges and occurrences
- Add prefixes, suffixes and sequential numbers
- Name files from dates and photo metadata
Switch between naming functions; they are not combined in a single operation.
RIRAGON RENAME
Product features
Explore Riragon Rename, from batch replacement and sequential numbering to undo.
Control what gets replaced.
Replace or remove text
Find literal text. Leave the replacement empty to remove unwanted text.
Choose the part to rename
Target the name stem, extension or full name. The default protects the extension.
Choose which match changes
Replace every match, only the first, or only the last match in each name.
Lock the editing range
Limit replacement to a number of characters from the beginning or end. Text outside stays untouched.
Match case when needed
Choose case-sensitive matching. Japanese and Unicode file names are supported.
Spot repeated matches
Warnings flag names with multiple matches. A warning does not block renaming: check the preview before applying.
Build names from text, numbers and dates.
Add prefixes and suffixes
Add shared text at either or both ends. Suffixes go before the original extension.
Create numbered sequences
Use a shared name detected from the originals, or enter your own for photos and image sequences.
Set numbering details
Choose a start number, 1–12 digits and an underscore or hyphen. Number by name or date, separately for each extension.
Use file dates
Add creation or modification dates to make documents and records easier to identify.
Use the date a photo was taken
Use the capture date stored in JPEG EXIF metadata to organize photos by date.
Use the camera model
Include the model recorded in JPEG metadata when organizing photos from different cameras.
Choose a date format
Use a separated date, compact date, or date and time. File dates can use local time or UTC.
Choose where metadata goes
Insert at the beginning, end or a character position, or replace the name stem. Add fixed text around the value.
Handle missing metadata
Choose to skip files with missing information or block the batch. Read errors are reported separately.
Choose the scope. Review it clearly.
Browse folders and their contents
See file names while choosing a folder, or enter a location directly.
Filter the target extension
Choose JPG, CSV, files without an extension, or another available type across naming modes.
Include subfolders
Standard find-and-replace can include subfolders. Affixes, sequences and metadata apply to direct children only.
Exclude files from replacement
In standard replacement, exclude names or relative paths with text, glob or regex conditions, separated by commas.
Sort the list
Sort by name, creation date or modification date. In sequence mode, this determines the numbering order.
Focus on changes or errors
Filter the displayed rows to review changes or errors. Display filters do not change the execution scope.
Review large lists in pages
Browse 1,000 rows per page without changing the full plan or sequence numbers.
Copy names and details
Select a row to inspect full paths and copy before names, after names or details. Keyboard navigation is supported.
Check first. Follow through to the result.
Compare changes in two colors
Yellow marks replaced or removed text; green marks new text. Unchanged characters keep their normal color.
Preview after confirming input
Confirm an input to refresh the proposed names. Actual renaming starts only when you apply.
Block conflicts and overwrites
Check duplicate destinations, unsupported names and existing files. Plans with errors cannot be applied.
Resolve matching names with numbers
Standard replacement can add suffixes such as “ (2)” to resolve conflicts. Preview the exact names first.
Request a stop
Cancel a running batch. Completed changes remain; review successful, failed and unexecuted items afterwards.
Inspect diagnostics and results
See warning and error reasons in the diagnostics window, and per-file results in the comparison table.
Undo recent operations
Undo newest operations first until you switch modes or close the app. External edits, moves or deletion may prevent restoration.
Keep an execution record
Automatic records support checks and recovery through the CLI after a restart. They are not backups of file contents.
Export results as JSON
Export all items in the current rename or undo result before moving to a new preview.
See a memory estimate
A preview shows estimated working memory. Over-budget plans are blocked instead of silently reducing the scope.
Ready for everyday work.
Choose a simple or advanced workflow
Start with straightforward replacement, then use detailed naming tools. Switching modes resets inputs, displayed results and undo history.
Save and load naming settings
Keep separate settings for different jobs. Load and preview them before use; target folders are not saved.
Choose startup behavior
Start with defaults or restore automatically saved naming settings. Opening the app does not start a rename.
Switch between Japanese and English
Change the interface and diagnostic language while keeping your current inputs and results.
Work locally
Rename on your PC without uploading files to a cloud service.
Automate with the included CLI
List, preview, review, apply, inspect results and recover. Normal CLI operations share progress with the GUI.
Analyze sequences with the CLI
Inspect trailing-number ranges, duplicates and gaps without renaming files.
TESTED WITH 100,000 FILES
Verified renaming 100,000 files
Preview first, even for a large batch. We created 100,000 text files, renamed them with Riragon Rename, then independently checked every name and file's contents.
report_2024_002024.txt↓archive_2025_002024.txt
- Files renamed
- 100,000
- Rename execution
- 5m 18.9s
- Failed or not executed
- 0
Test environment
- OS
- Windows 11 Pro, 64-bit
Version 10.0.26200 - CPU & memory
- Intel Core i9-9900K @ 3.60GHz
8 cores / 16 threads · 64GB RAM - Storage
- Drive D: · NTFS
SanDisk SDSSDH32000G / 2TB / USB - Test files
- 100,000 .txt files in one folder
1,024 bytes each · 102,400,000 bytes total - Execution
- Riragon Rename CLI 1.0.9
Uses the same rename engine as the app - Date & runs
- October 12, 2026 · One run
What we measured
| Operation | Elapsed time |
|---|---|
| Create the 100,000-file preview | 15.00 s |
| Check every planned name against the rule | 0.69 s |
| Rename, validate and save execution records | 318.92 s |
| Independently verify all resulting files | 24.25 s |
Replaced the prefix report_2024_ with archive_2025_, preserving the sequence number and extension.
All 100,000 names matched the expected result.
Every file's SHA-256, file ID, size and modification time matched its original values. No files were missing or extra.
Timings were measured using CLI 1.0.9 without opening the app window. GUI rendering and interaction time are excluded. Creating the test files and recording their original hashes and metadata took a separate 628.20 seconds. Files and execution records were stored on the same D: drive. We ran once after creating the files, without clearing caches, while normal desktop apps remained open. Times vary with the PC, drive, file count and naming rules.
SUPPORT & CONTACTA little help,
A little help,
when you need it.
Find answers to common questions.
For anything else, get in touch by email.
Do I need to configure lots of settings?
Simple mode needs only a folder, the text to find and its replacement. Switch to Advanced mode when you need more control.
Will it change the contents of my files?
File contents stay intact, and extensions are preserved by default. Changing an extension does not convert the file format.
Can I undo a rename?
Undo recent operations until you switch modes or close the app. Files edited, moved or deleted outside the app may not be restorable.
What happens if I cancel or a batch fails?
Completed renames remain in place; they are not automatically rolled back. One in-flight file may finish when you cancel. Review the results, then use Undo if needed.
What if a rename is blocked?
Check the reason shown in Details. Files in use, name conflicts or errors saving execution records can block a rename. Resolve the cause and check any completed results before creating a new preview.
Can I rename folders too?
Riragon Rename works on file names. Renaming folders and moving files are not supported.
Do I need to connect an AI tool?
No. Open the app and use it directly. CLI integration with other tools is optional.