Bulk Image Renamer
Select many images, set a naming pattern with tokens, and download each file under its new name. Everything runs in your browser, so your files never leave your machine.
About the Bulk Image Renamer
The Bulk Image Renamer renames many image files at once using a naming pattern you control. Build names from tokens like {name}, {n}, {ext}, and {date}, set a start number and zero padding, run a find-and-replace on the original name, and choose a case style. A live before/after table shows every new name before you save. Everything runs in your browser, so your images are never uploaded.
How it works
- Browse for images or drop them onto the panel. Files stay on your device.
- Set the naming pattern using the token buttons, then adjust the start number, zero padding, case, space handling, and optional find/replace.
- Check the before/after table to confirm the new names look right.
- Click Save on a row to download one file, or Download all renamed to save each file under its new name.
Features
- Pattern tokens: {name} for the original name, {n} for the sequence number, {ext} for the original extension, and {date} for today as YYYYMMDD.
- Start number and zero padding (1, 01, 001, 0001) for clean ordering.
- Find and replace on the original name, plus lowercase or UPPERCASE conversion.
- Space handling: turn spaces into hyphens or underscores, remove them, or keep them.
- Live before/after table and one-click download for each file or the whole set.
Frequently asked questions
Are my images uploaded anywhere?
No. Renaming happens entirely in your browser. Your files are read locally and saved back to your device, with nothing sent to a server or logged.
Can I download all the renamed files in one zip?
Not as a single zip. A zip would require an external library, which this tool does not load to keep everything client-side. Instead, Download all renamed saves each file one after another under its new name.
What do the pattern tokens mean?
{name} is the original file name without its extension, {n} is the running sequence number controlled by the start number and padding, {ext} is the original extension, and {date} is today's date as YYYYMMDD. Any text you type around the tokens is kept as written.
Does the original file extension stay the same?
Yes. The tool keeps each file's original extension and appends it automatically if your pattern does not already include {ext}. It changes the name only, not the image format or contents.
My browser asks before each download or blocks some. Why?
Saving many files at once triggers multiple download prompts. If your browser blocks repeated downloads, allow them for this site, or use the Save button on each row to download files individually.