Global PII Anonymization
anonymize.legal vs Redact PDF AI — Full Comparison
Both tools detect and anonymize PII, but differ fundamentally in scope: anonymize.legal is a 7-platform ecosystem; Redact PDF AI is a single-purpose PDF redaction tool.
Feature-by-Feature Comparison
Data verified March 2026 from Redact PDF AI public documentation.
| Feature | anonymize.legal | 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 |
| Anonymization Methods | 6 (Replace, Mask, Redact, Hash, Encrypt, Custom) | 1 (Irreversible pixel burn only) |
| Reversible Encryption | Yes — AES-256-GCM with ZK recovery | No — redaction is permanent, no decryption |
| Custom Entity Creation | Yes — regex + deny lists + ML recognizers | No — fixed 8 categories only |
| NLP Engine | 3 engines: spaCy (24 langs) + Stanza (6) + XLM-RoBERTa (18) | AI model (unspecified) + OCR + regex |
| Image PII Detection | Yes — OCR + entity detection on images | Yes — OCR on scanned PDFs |
| Batch Processing | Yes — 5,000+ files, parallel, any format | Yes — multi-file PDF upload, ZIP download |
Why Choose anonymize.legal
- 285+ entity types vs 8 categories — detects government IDs, tax numbers, license plates for 240+ jurisdictions
- 48 languages with dedicated NLP — not just OCR language detection, but spaCy/Stanza/XLM-RoBERTa per language
- 7 platforms — Web, Desktop, Office Add-in, Chrome Extension, LibreOffice, MCP Server, REST API
- Reversible encryption — encrypt PII with AES-256-GCM, decrypt later with key. Redact PDF AI only burns pixels permanently
- Zero-knowledge architecture — Argon2id key derivation, server never sees plaintext. Redact PDF AI processes documents server-side
- Free tier: 200 tokens/month — no credit card required. Redact PDF AI demo limited to 5 pages (first page only)
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 |