Developer Privacy API
anonym.digital vs Redact PDF AI API — Developer Comparison
Developers building privacy-first applications need flexible APIs with rich entity detection, multiple SDKs, and AI-native integrations like MCP.
Feature-by-Feature Comparison
Data verified March 2026 from Redact PDF AI public documentation.
| Feature | anonym.digital | Redact PDF AI |
|---|---|---|
| Entity Types | 285+ (PII, PHI, financial, government IDs) | ~8 categories (Person, Email, PhoneNumber, Address, Organization, Date, IBAN, CreditCard) |
| Languages | 48 (dedicated NLP per language) | 100+ (OCR-based, no NER per language) |
| Detection Engine | spaCy + Stanza + XLM-RoBERTa + regex | AI + OCR + regex patterns |
| Platforms | Web, Desktop, Office, Chrome, LibreOffice, MCP, API (7) | Web app, REST API (2) |
| Zero-Knowledge | Yes (Argon2id + AES-256-GCM, server never sees data) | No (server processes documents in plaintext) |
| Reversible Encryption | Yes — decrypt with original key | No — irreversible pixel burn only |
| Free Tier | 200 tokens/month, no credit card | 5-page demo (first page only) |
| Paid Plans | Basic €3/mo, Pro €15/mo, Business €29/mo | Starter $50/mo, Business $250/mo |
| Offline Mode | Yes (Desktop App, air-gapped) | No (cloud-only) |
| File Formats | PDF, DOCX, XLSX, CSV, TXT, JSON, Images | PDF, DOCX, XLSX, JPG, PNG |
| API Type | REST API + MCP Server (7 tools) + Python SDK + Node.js SDK | REST API only (async jobs) |
| MCP Server | Yes — 7 tools for Claude, Cursor, LangChain integration | No MCP support |
| SDKs | Python SDK, Node.js SDK, REST API | REST API only (curl examples) |
| Entity Types | 285+ with custom entity creation | 8 fixed categories |
| Real-Time Processing | Yes — sub-200ms per request | No — async job queue (poll for results) |
| Detection Engine | spaCy + Stanza + XLM-RoBERTa + regex (configurable per request) | AI model + OCR (black box) |
| LangChain Integration | Native — anonymize before LLM, deanonymize after | No LangChain support |
| Response Format | JSON with entity spans, confidence scores, types | Redacted PDF file only |
Why Choose anonym.digital
- MCP Server — 7 tools for AI-native integration with Claude, Cursor, Windsurf. Redact PDF AI has no MCP support
- Real-time API — sub-200ms synchronous responses. Redact PDF AI requires async polling for job completion
- 285+ entity types — detect government IDs, financial numbers, healthcare identifiers. API returns JSON with spans and confidence scores
- Reversible in code — anonymize → process with LLM → deanonymize. Impossible with Redact PDF AI's permanent redaction
- Python + Node.js SDKs — native language support, not just curl examples
Caviard.ai (Sister Product) Comparison
Redact PDF AI's parent company also operates Caviard.ai, a free Chrome extension that redacts PII in ChatGPT and DeepSeek prompts. Here's how it compares to the anonym.legal Chrome Extension.
| Feature | anonym.legal Chrome Extension | Caviard.ai |
|---|---|---|
| AI Platforms | ChatGPT, Perplexity, Claude, Gemini, DeepSeek | ChatGPT, DeepSeek |
| Entity Types | 285+ | 100+ (regex-based) |
| Detection Engine | Hybrid NLP (spaCy/Stanza/XLM-R) + regex | Regex patterns only |
| Processing | Server-side NLP (zero-knowledge encrypted) | Local browser-only |
| File Anonymization | Yes — anonymize files before upload | No — text prompts only |
| Reversibility | Yes — AES-256-GCM decrypt | Toggle only (Alt+R) — session-based, not persistent |
| Languages | 48 with NLP | Multiple (regex-based, no NLP) |
| Pricing | Free tier (200 tokens/mo) | Free |
Pricing Comparison
| Plan | anonym.legal | Redact PDF AI |
|---|---|---|
| Free | 200 tokens/month, no credit card | 5-page demo (first page only) |
| Entry | Basic: €3/month (1,000 tokens) | $5 prepaid (20 pages, 30-day expiry) |
| Mid | Pro: €15/month (4,000 tokens) | Starter: $50/month (1,000 pages) |
| Business | Business: €29/month (10,000 tokens) | Business: $250/month (6,000 pages, 3 seats) |
| Enterprise | Custom | Custom |