100% free · No signup · No watermark · Runs entirely in your browser
Renaming dozens of files by hand is slow and error-prone. Paste a list of titles - one per line - and this free bulk filename generator turns each one into a clean, safe filename with optional zero-padded numbering, prefixes and suffixes. Export the finished list as a .txt file and feed it to any batch rename tool or script.
Generate clean filenames in bulk
Paste one title per line. Each becomes a safe, numbered filename you can export.
Frequently asked questions
Is the bulk filename generator free?
Yes. Generate unlimited batches with no signup, no watermark and no daily caps. It runs entirely in your browser.
How many titles can I paste at once?
Up to 10,000 lines per batch, which covers photo shoots, product catalogs and document archives. Your browser handles that volume comfortably.
Does it rename my actual files?
No. It generates a clean list of names for you to use in a batch rename tool, script or spreadsheet. Your real files are never touched or uploaded.
How does the numbering work?
When numbering is on, each filename starts with a zero-padded sequence like 001, 002, 003. Set the start value and digit count to match your existing naming scheme.
Can I download the filename list?
Yes. Click Download .txt to save every generated name, one per line, ready to paste into a rename utility or keep as documentation.
How do I rename many files at once?
Short answer: Paste your titles into the tool above, pick a separator, extension and numbering scheme, then click Generate. Copy the resulting list or download it as a .txt file, then apply it with a batch rename utility such as Bulk Rename Utility, PowerRename or a simple script. The generator only creates the names; your files stay untouched until you rename them.
This two-step approach is safer than renaming directly: you can review the full list for typos before anything changes on disk.
What is a good file naming convention for bulk files?
Short answer: Use lowercase words joined by hyphens, a zero-padded sequence number, a short project prefix and a clear extension, like project-x-001-sunset.jpg. Keep names under 80 characters, avoid spaces and special characters, and put the most variable part last so alphabetical sorting stays useful.
The defaults in this tool follow exactly that convention, so you can generate first and fine-tune later.
Can I add numbers to filenames in bulk?
Short answer: Yes. Enable sequential numbering, set the start value and digit padding, and every generated name gets a number like 001, 002, 003 at the front. Numbering keeps large batches sortable, prevents duplicate names when titles repeat, and makes long lists easy to scan during review.
If you already numbered files elsewhere, set the start value to continue the sequence without collisions.
