Rename many files at once, sort them into folders, rename from a spreadsheet list, and remove duplicates. Free, private, and no sign-up needed.
Bulk file renamer and organizer
Choose your files, set your naming rules, pick how to sort them into folders, check the preview, and download everything in one ZIP. Your files never leave your device.
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How to rename many files at once
Renaming files one by one takes forever when you have dozens or hundreds of them. Photos from your phone have names like IMG_4821, product pictures need clear names for your online shop, and documents need a consistent pattern so you can find them later. This free bulk file renamer applies the same rules to every file in seconds, with no software to install.
How to use the renamer
- Choose your files or drag them into the box. You can add more at any time.
- Type a new name for all the files, or leave it blank to keep the original names and just change parts of them.
- Use the other rules if you need them: add numbers, find and replace text, add a prefix or suffix, add a date, change the letter case, or replace spaces.
- Choose how to organize your files. You can sort them into folders by file type, by date, or both.
- Have a spreadsheet of new names, such as product codes? Paste it into the list box and each file gets the new name that matches it.
- Tap Online shop preset if you want lowercase names with hyphens and numbers in one click.
- Check the preview. It shows every old name and the new name beside it.
- Tap Download renamed files. You get one ZIP file containing all your files with their new names, in the folders you chose.
Organize files into folders automatically
Instead of dragging files around one at a time, let the tool sort them for you. Sorting by file type puts photos, videos, audio, documents, spreadsheets, presentations and archives into their own folders. Sorting by date creates a folder for each month, such as 2026-10, using the date each file was last modified. You can also combine both, so every file type has its own set of monthly folders.
Rename files from a spreadsheet list
If you have a list of product codes or SKUs, you do not have to type each name. In Excel or Google Sheets, put the old file names in the first column and the new names in the second, copy both columns, and paste them into the list box. Each file whose name appears in column one is renamed to the matching name in column two, and its file extension is kept. The tool tells you how many of your files matched, and you can leave out any files that are not on the list.
Use the date a photo was taken
Photos carry the date they were shot inside the file. Choose "Date the photo was taken" to use that date for folders, for dates in the names and for sorting. This works for JPG photos that contain this information. For other files, or photos without it, the tool uses the date the file was last modified.
Remove duplicate files
Switch on "Leave out duplicate files" and the tool compares your files to find identical copies. It keeps the first one and leaves the rest out of the ZIP, so your numbering stays tidy and you do not store the same picture twice. Your original files are never deleted.
Keep a record of the old names
Every ZIP can include a names list in CSV format. It shows each old name, the new name and the folder it went into, and it opens in Excel, Google Sheets or any spreadsheet app. It is a handy way to check your work or to find an original file name later.
Tips for good file names
- Use numbers with leading zeros, such as 001, 002 and 010, so your files stay in the right order on any device.
- Avoid special characters like slashes, colons and question marks. They are not allowed in file names, and this tool removes them for you.
- Put the date first in the format year, month, day, such as 2026-10-06, and your files will sort in time order everywhere.
- For online shops and websites, hyphens between words work well and are easy to read, for example blue-cotton-shirt-01.jpg.
- Keep names short but clear, so you know what a file is without opening it.
Frequently asked questions
Is the bulk file renamer free?
Yes. It is completely free, with no sign-up and no limit on how many files you add.
Are my files uploaded anywhere?
No. Everything happens in your own browser. Your files stay on your device.
Why do I get a ZIP file instead of renamed originals?
For safety, a web page cannot rename the original files on your computer or phone. Instead, the tool creates renamed copies and packs them into a ZIP. Open the ZIP and extract your files, and your originals stay untouched.
What happens if two files end up with the same name?
The tool adds a number in brackets, such as (2), so no file is overwritten.
Can I undo the renaming?
Your original files are never changed, because you download renamed copies. The names list in the ZIP also shows every old and new name, so you can always find the original.
How does the tool decide a file's date?
By default it uses the date the file was last modified, which your device stores with each file. For JPG photos you can switch to the date the photo was taken instead.
How are duplicate files detected?
The tool compares the actual contents of files that have the same size, so two files with different names but identical content are treated as duplicates. Very large files over 200 MB are skipped in this check.
What should my list look like?
Two columns: the old file name first, then the new name. Copy them straight from Excel or Google Sheets. A first row with a heading such as Old name is skipped automatically.
Does renaming change my files?
No. Only the names change. The content, quality and size of each file stay exactly the same.