bloombatch

Bulk file renaming for Windows, simple UI, live preview, no clutter.

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Why bloombatch

bloombatch helps you rename many files at once without guessing what will happen. You build rename rules, see the preview instantly, then apply changes when it looks right.

Features

• Drag and drop files, or browse manually
• Live rename preview before writing to disk
• Composable rules:
  • Prefix
  • Suffix
  • Find and replace
  • Auto-numbering
  • Case transform (lowercase/UPPERCASE)
• Conflict detection, rename action stays blocked until conflicts are fixed
• Local-only app, no accounts, no telemetry

Quick start

Requirements

• Go 1.21+
• Node.js 18+
• Wails CLI v2

go install github.com/wailsapp/wails/v2/cmd/wails@latest

Run in development

wails dev

Build executable

wails build

Output:

• build/bin/bloombatch.exe

Usage

1. Add files by dragging into the app or using Browse.
2. Add one or more rename rules from the right panel.
3. Confirm the preview list.
4. Click Rename Files.

Tech stack

• Backend: Go
• Frontend: React + TypeScript + Tailwind CSS
• Desktop shell: Wails (WebView2 on Windows)

Project structure

bloombatch/
├─ app.go
├─ main.go
├─ wails.json
├─ frontend/
│  ├─ src/
│  │  ├─ App.tsx
│  │  ├─ main.tsx
│  │  └─ style.css
│  └─ wailsjs/
└─ build/

License

MIT