Renumber It
Honest Comparison

Renumber It vs
Bulk Rename Tools

Bulk renamers are great for many things. Renumber It does one thing better: insert files into numbered sequences without breaking anything.

Different Tools for Different Problems

Bulk rename tools (like PowerToys PowerRename, Bulk Rename Utility, or Advanced Renamer) excel at pattern-based operations: find-and-replace, adding prefixes, regex transformations.

Renumber It solves a specific problem they don't address: "I have files 1–80 and need to insert a new file at position #10." This requires understanding the sequence and intelligently shifting all affected files.

They're complementary tools. Use both when appropriate.

Feature Comparison

FeatureRenumber ItBulk Renamers
Insert file into numbered sequence
Renumber It's core strength
Automatic shift calculation
Figures out which files to rename
Multiple insert positions
Insert at 5, 12, and 20 at once
Preserves numbering style
Keeps your zero-padding and separators
~
Find and replace in filenames
Use bulk renamers for this
Add prefix/suffix
Use bulk renamers for this
Regex-based renaming
Use bulk renamers for this
Privacy-first (browser-based)
Both work locally
No installation required
Renumber It is web-based

Use Renumber It When...

  • You need to insert files into an existing numbered sequence
  • You want files shifted up automatically (10→11, 11→12, etc.)
  • You're working with legal exhibits, annexures, or court bundles
  • You need multiple inserts calculated correctly

Use Bulk Renamers When...

  • You need to find-and-replace text in filenames
  • You want to add prefixes or suffixes to files
  • You need regex-based pattern matching
  • You want to number files from scratch (1, 2, 3...)

Your Privacy and Confidentiality, Protected

  • 100% browser-based — all processing happens locally on your device
  • No uploads — we never see your files
  • Only file names — the tool only renumbers your file names - and we never see them

Your data stays on your device.

Ready to Try Renumber It?

3 free uses. No credit card required. See how it compares for yourself.

Frequently Asked Questions

Bulk rename tools are great for find-and-replace operations or adding prefixes/suffixes. But they struggle with the 'insert and shift' problem. Renumber It is purpose-built for inserting files into numbered sequences while keeping everything in order.
Windows can rename files, but it doesn't understand numbered sequences. If you insert a file at position #10 in a 1-80 sequence, Windows won't automatically renumber 10-80 to 11-81. That's exactly what Renumber It does.
PowerRename is excellent for regex-based renaming patterns. Renumber It solves a specific problem that PowerRename doesn't address: intelligently shifting numbered files when you insert new ones. They're complementary tools.
Simply paste your list of numbered filenames, specify where you want to insert new files, and we generate PowerShell commands that rename everything automatically. The entire process happens in your browser — your filenames never leave your device.
Absolutely. Renumber It processes everything locally in your browser. We never upload your filenames to any server, never access your actual files, and never store any of your data. It's 100% client-side processing.
Renumber It works for both Windows and MacOS. The web interface works on any modern browser.
No installation required. Renumber It is a web application that runs entirely in your browser. You just need PowerShell (built into Windows) to execute the generated rename commands.

Learn More

Renumber FilesRenumber Legal ExhibitsFull FAQ