Why we built this
Most file renaming tools either require a desktop app installation, charge a subscription fee, or upload your files to a remote server. None of that made sense to us for something as simple as changing a filename.
We built FileRenamer.online entirely in the browser using JavaScript's File API, which means renaming happens on your device, instantly, with no data leaving your computer. It costs nothing to run on your end and requires nothing from you except a modern browser.
What makes it different
Truly private
Your files never touch our servers. Processing is 100% local in your browser.
Instant results
Rename hundreds of files in seconds with a live preview before download.
Free, always
No freemium tier, no file limits, no account required. Just the tool.
Powerful features
Regex find and replace, date stamps, sequential numbering, case transforms, and more.
Who uses it
FileRenamer.online is used by photographers organising camera rolls, developers cleaning up asset libraries, accountants batch-naming invoice PDFs, video editors numbering episode files, and anyone who has ever had to rename more than a handful of files at once.
If you have a workflow we have not thought of, we would love to hear about it. Use the contact page to tell us.
Our commitment
We will never add ads, never require an account, never upload your files, and never put useful features behind a paywall. The tool is what it is: a fast, honest utility that does one thing well.
Get in touch
Found a bug? Have a feature idea? Want to say hello? We read every message. Head over to the contact page.