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ButterShare vs Mass Rename

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ButterShare compared with Mass Rename
DetailButterShare logo ButterShareMass Rename logo Mass Rename
What it doesSend files directly between devices with encrypted WebRTC, no account and no cloud file storage Batch rename files from a CSV or Excel mapping table without uploading them
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: rename up to 50 files per batch with all features. Lifetime licence: $19 USD one-time payment for unlimited files per batch.
Key features
  • Direct device-to-device file streaming with no cloud storage
  • No file size limits for transfers
  • End-to-end encryption with cryptographic keys
  • No account or signup required
  • Works on all modern browsers and devices
  • QR code and room code sharing options
  • Native disk streaming for large files
  • Folder structure preservation during transfer
  • Supports up to 10,000 files per session
  • Resumable transfers with checkpoint data
  • Case-insensitive filename matching across CSV/XLSX files
  • Preview all conflicts before renaming
  • Download renamed files as ZIP
  • Rename photos by EXIF date taken
  • Support for CSV, TSV and Excel .xlsx formats
  • In-place folder renaming for Chrome and Edge
  • Generate rename scripts for Windows, Mac and Linux
  • Handle files in subfolders without moving them
  • Auto-numbering for duplicate filenames
What makes it different
  • No cloud server storage intermediary for maximum privacy
  • Zero-knowledge architecture with ephemeral session keys
  • Unlimited file sizes with no subscription fees
  • Instant sharing without email verification or login
  • Transfer speeds at local gigabit rates on same network
  • 100% client-side processing—files never leave your browser or device
  • No account, signup or installation required
  • Works offline after the page loads
  • Free tier with full features for up to 50 files per batch
Community votes00
DR (Domain Rating by Ahrefs)28 +2 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)80
Citation Flow (Majestic)300
Referring domains (Majestic)600

4 details filled in for both companies.

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