Batch Rename Files Online Free — No Software NeededOnline file renamer: bulk rename, regex, date, sequential numbering and more
Got dozens of poorly named files in a ZIP? Batch renaming files manually is tedious and error-prone. ZipSort is an online file renamer that lets you rename files in bulk directly inside a ZIP archive — no software to install, no files uploaded to any server. Sequential numbering, date stamps, prefix, suffix, case conversion, regex — all possible in a few clicks.
10 renaming types available
🔢 Sequential numbering
photo-01.jpg, photo-02.jpg, photo-03.jpg… With configurable padding.
🔄 Text replacement
Replace "IMG_" with "photo-" or any text in file names.
📅 Date addition
Add today's date or the file's modification date as prefix or suffix.
🏷️ Prefix / Suffix
Add "project-X_" at the beginning or "_deliverable" at the end.
Aa Uppercase / Lowercase
Convert all names to UPPERCASE or lowercase with one click.
🔗 kebab-case
Transform "My Final File.pdf" into "my-final-file.pdf".
✂️ Truncate
Limit the character count of overly long file names.
🗑️ Remove text
Delete specific text from all file names at once.
🔧 Regex
Advanced renaming with regular expressions for power users.
📁 Folder targeting
Apply renaming only to files in a specific folder.
How to batch rename files with ZipSort
Upload your ZIP archive
Drag and drop your ZIP file. No files are sent anywhere — everything happens in your browser.
Add renaming rules
Click "Renaming Rule" and choose: numbering, replacement, date, prefix, suffix, uppercase, lowercase, kebab-case, regex…
Filter if needed
Apply renaming to all files or only those containing a specific keyword (e.g. "PDF" to rename only PDFs).
Preview in real-time
See the renaming result before downloading. The file tree updates instantly.
Download
The ZIP is generated with all your files renamed, ready to use.
Pro tip: combine sorting and renaming
ZipSort is both an online file sorter and a bulk file renamer. Sort files into folders AND rename them simultaneously. For example: sort by extension (.pdf → /Documents, .jpg → /Images) and rename with date prefix in lowercase.
Use AI for renaming
With ZipSort Pro, the AI assistantgenerates renaming rules too. Just say: "rename my photos with date and a number" or "convert all names to kebab-case". The AI creates the rules automatically.
FAQ
Is batch renaming free?
Sorting is free. Advanced renaming (numbering, regex, date…) is a Pro feature.
Can I undo a rename?
Yes — ZipSort never modifies your original file. The renamed ZIP is a new file; your original stays intact.
How many files can I rename?
With ZipSort Pro, there's no limit to the number of files you can rename.
Does renaming work with subfolders?
Yes, renaming applies to all files in the ZIP, including those in subfolders.