What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

Where are my files processed?

Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

Image

Rename Files in Bulk

Rename many files at once with a pattern.

PrivateWorks OfflineNo Account

100% Private Works Offline Instant

Quick Presets

Template Rename

Prefix

Suffix

Sep

Start #

Pad

Sequential numbering

Find

Replace

Case Transform

Remove specific characters

Override file extension

Drop your files here

or click to browse

Max 100MB

0/5free today

Deep dive

About Rename Files in Bulk.

Rename Dozens of Files at Once With Pattern Substitution

Drop a folder of files and CipherForces Bulk File Rename applies a pattern — add prefix, add suffix, replace text, zero-pad numbers, sequential numbering, extension change. Preview every new filename before confirming. Files stay on your computer.

Common Use Cases

Photo organization: Rename IMG_4523.jpg → vacation-2024-001.jpg across 500 photos.
Cleanup: Remove spaces, special characters, or casing inconsistencies from filenames.
Sequential numbering: Add 001, 002, 003 to the end of every file.
Preparing for CMS: Ensure filenames match your CMS's allowed-character rules before upload.

Key Features

Find & replace: Literal or regex-based substitution.
Prefix/suffix: Add text before or after every filename.
Sequential numbering: {n}, {n:03} for zero-padded counters.
Live preview: Every old → new pair shown before you click "Rename".

Privacy: Uses the browser's File System Access API — files stay on your machine throughout.

Three steps

How to use Rename Files in Bulk.

Upload your file

Drag and drop or click to select your file.

Choose settings

Adjust quality, size, or format options.

Download result

Your processed file is ready instantly.

Related image tools.

View all

Compress Images

Make images smaller while keeping them sharp.

Open tool

Resize Images

Change the dimensions of any image.

Open tool

Crop Images

Cut out the part of the image you want.

Open tool

Convert Image Format

Change between JPG, PNG, WebP, HEIC, and more.

Open tool

Why CipherForces

Privacy-first tools that work everywhere.

100% Private

From $39

Works Offline

No Account

83 Tools

Need more than a tool?

Get images professionally printed — cards, flyers, banners, in-house.

Print Services Free quote

Explore all 83 tools

About Rename Files in Bulk.

Rename Dozens of Files at Once With Pattern Substitution

Common Use Cases

Photo organization: Rename IMG_4523.jpg → vacation-2024-001.jpg across 500 photos.
Cleanup: Remove spaces, special characters, or casing inconsistencies from filenames.
Sequential numbering: Add 001, 002, 003 to the end of every file.
Preparing for CMS: Ensure filenames match your CMS's allowed-character rules before upload.

Key Features

Find & replace: Literal or regex-based substitution.
Prefix/suffix: Add text before or after every filename.
Sequential numbering: {n}, {n:03} for zero-padded counters.
Live preview: Every old → new pair shown before you click "Rename".

Privacy: Uses the browser's File System Access API — files stay on your machine throughout.