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CSV Anonymizer

CSV Anonymizer is a local-first desktop app for reducing sensitive CSV and pasted-data exposure before a file or sample leaves a machine. The product combines a React/Vite frontend, a Tauri command shell, and a Rust anonymization core, with optional Smart replacement through a local Ollama runtime.

What it does

The app detects likely personal or sensitive fields, lets the user review selected columns, previews replacements, and writes protected output while preserving the input shape where possible. The main product modes are wired in frontend/src/App.tsx:

• CSV file for streaming CSV transformation from disk.
• Paste sample for CSV, JSON, XML, YAML, plain text, and log snippets up to the configured paste limit.
• Quick by data type for generating protected sample values without first providing source data.

The Rust service in crates/csv-anonymizer-core/src/service.rs owns CSV analysis, preview, preflight checks, and full-file anonymization. Direct pasted and quick workflows live under crates/csv-anonymizer-core/src/direct_input/. Tauri commands in src-tauri/src/commands/csv.rs expose those operations to the frontend through wrappers in frontend/src/tauri.ts.

Quick links

Topic	Start here
Repository overview video	Watch the MP4
High-level architecture	Architecture
Local setup and checks	Getting started
Terms used by the app	Glossary
CSV transformation flow	CSV file workflow
Smart replacement	Local AI Smart replacement
Tauri command boundary	Tauri commands
Release and packaging	Deployment

Repository shape

Path	Purpose
frontend/src	React UI, hooks, Tauri invoke wrappers, shared types, and styles
src-tauri/src	Tauri desktop shell, command handlers, settings, file grants, background jobs, and Ollama integration
crates/csv-anonymizer-core/src	Detection, CSV IO, transformation strategies, privacy reports, direct-input workflows, and public DTOs
crates/csv-anonymizer-app/src	Lightweight CLI and smoke-test harness for the Rust core
scripts	Release, packaging, metadata, contract, audit, and smoke-test tooling
.github/workflows	CI, release, and scheduled dead-code/dependency scanning
docs	Design notes, release notes, migration status, and quality assessments

Privacy boundary

The default detector and transformer run locally in Rust. Smart replacement is optional and sends selected values to the loopback Ollama endpoint configured in src-tauri/src/local_ai/mod.rs, not to a hosted API. The output is transformed source data, not a formal anonymity guarantee, so the preview and privacy report are part of the release decision rather than decoration.

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