1
Choose your files
Click Choose files for individual files, or Choose folder for a whole folder.
Your files stay in your browser. RenameDeck does not upload them to a file-renaming server.
30-second guide
Rename a whole folder in four simple steps.
RenameDeck lets you plan new filenames first. Nothing is renamed while you experiment. You see every result before you download anything.
Before
IMG_4832.JPGIMG_4833.JPGIMG_4834.JPGAfter
Hawaii_001.jpgHawaii_002.jpgHawaii_003.jpgThe whole process
Choose → Set rules → Preview → Export
2
Tell RenameDeck what the names should look like
You can use only one rule or combine several rules.
FindIMG_
Replace withHawaii_
Add sequence001, 002, 003…
Extensionlowercase
You do not need to fill every box. Leave rules you do not need unchanged.
3
Look at the preview
The left side is the original filename. The right side is the proposed filename.
Original
IMG_4832.JPG→
New name
Hawaii_001.jpg✓ Ready
If two files would get the same name, RenameDeck warns you before export.
4
Choose how you want the result
Renamed ZIP
Easiest option. Downloads renamed copies of the selected files.
Rename plan CSV
A spreadsheet-friendly list of old and new names.
PowerShell script
For renaming originals on Windows after you review the commands.
Bash script
For macOS/Linux users who want to rename originals locally.
Important: ZIP export creates renamed copies. Your original files are not deleted or overwritten by the website.
Worked example
Rename camera photos for a trip
You start with
DSC_7281.JPGDSC_7282.JPGDSC_7283.JPGSet these rules
FindDSC_
Replace withTokyo_
Add sequence001
Extension caselowercase
You get
Tokyo_7281_001.jpgTokyo_7282_002.jpgTokyo_7283_003.jpgCommon recipes
What are you trying to do?
Add text to every filename
Use Prefix to add text at the beginning, or Suffix to add it at the end.
photo.jpg → client_photo_final.jpgNumber files in order
Turn on Add sequence number. Choose the starting number and padding.
image.jpg → image_001.jpgRemove ugly camera prefixes
Put the unwanted text in Find, then leave Replace with empty.
IMG_photo.jpg → photo.jpgClean filenames for the web
Choose kebab-case, lowercase extensions, and safe filename characters.
Summer Photo 01.JPG → summer-photo-01.jpgWhat the controls mean
The options in plain English
| Control | What it does | Example |
|---|---|---|
| Prefix | Adds text before the existing name. | photo → trip_photo |
| Suffix | Adds text after the existing name, before the extension. | photo → photo_final |
| Find / Replace | Changes matching text inside filenames. | IMG_ → Hawaii_ |
| Letter case | Changes names to lowercase, uppercase, Title Case, kebab-case, or snake_case. | My Photo → my-photo |
| Spaces | Keeps spaces or replaces them with dashes/underscores. | My Photo → My-Photo |
| Sequence | Adds numbers such as 001, 002, 003. | photo_001 |
| Template | Builds a name from tokens such as filename, date, and number. | {date}-{name}-{n} |
| Safe characters | Replaces characters that are troublesome in common operating systems. | report:final → report_final |
Good to know
Three things that prevent mistakes.
Preview first
Changing a rule updates the proposed names. Check the table before exporting.
Warnings are intentional
If output names collide or a filename is invalid, fix the rule before downloading or running a script.
Scripts can rename originals
ZIP export is copy-based. PowerShell and Bash scripts are different: review them before you run them on your files.
Ready?