Is my data safe? Do you upload files?

Yes, 100% safe. We use HTML5 File API to process files locally in your browser. Your files never leave your device.

Can I rename thousands of files at once?

Yes. Since processing is local, the only limit is your device's memory.

Frequently Asked Questions

Is it free?

Yes, BulkRename.Online is completely free. We do not watermark files or restrict the number of files you can rename in a single batch.

Do you keep a copy of my files?

No. We physically cannot see your files. The code runs entirely on your computer (client-side) using standard browser APIs. You can even disconnect your internet after loading the page and the tool will still work.

How do I rename images for SEO?

We built a dedicated tool for this. Use our Image SEO Renamer. It pre-selects the "kebab-case" option which converts filenames to lowercase and replaces spaces with hyphens, aligning with Google's recommendations.

What file types are supported?

We support any file type your browser supports: JPG, PNG, GIF, PDF, DOCX, MP4, MP3, ZIP, and more. For images, we provide thumbnail previews.