RedactProof vs iDox.ai: Comparing Approaches to Document Redaction

Two tools, two different risk models

Both RedactProof and iDox.ai automate the detection and removal of sensitive information from documents. At that level of description, they solve the same problem. The differences that matter are architectural and commercial: where your files go during processing, who holds the certifications your organisation needs, and what you're paying for the privilege.

Neither tool is universally the better choice. iDox.ai serves enterprise buyers who need audited cloud infrastructure with formal compliance certifications. RedactProof is built for teams who need fast, accurate redaction without uploading their documents to a third-party server at all.

This page covers both honestly. We'll flag where iDox.ai is the stronger pick before explaining why RedactProof fits differently.

How iDox.ai handles redaction

iDox.ai Redact is a cloud-based SaaS platform. Documents are uploaded to iDox.ai's servers for processing - text extraction, AI-powered entity detection, and redaction all happen server-side. The platform supports 47+ file formats, detects over 40 categories of sensitive data (PII, financial information, medical data, legal content), and includes batch automation for high-volume workflows. On-premise deployment is available for enterprise customers at custom pricing.

The AI detection combines machine learning models with rules-based pattern matching. iDox.ai's own documentation describes context-aware analysis designed to reduce over-redaction - a genuine problem with purely pattern-based tools that flag everything resembling a name or date. At the time of writing (May 2026), the platform also includes document comparison (tracking what changed between versions) and a data anonymisation module beyond basic redaction.

Processing in the cloud means the tool can handle large document volumes at server-side speed. For teams running thousands of pages a week, that's a meaningful operational difference from browser-based processing.

Where iDox.ai is the stronger choice

Be direct about this: iDox.ai holds SOC 2 and ISO 27001 certifications, audited by independent third parties. For regulated industries - financial services, healthcare, government contracting - these certifications answer procurement questions that a newer tool without the same audit history cannot. If your organisation's vendor assessment requires SOC 2 Type certification and ISO 27001, iDox.ai passes that gate.

The GSA Schedule compliance and TAA compliance (Trade Agreements Act) also matter specifically for US federal and state government buyers. These are not boxes RedactProof ticks at this stage.

iDox.ai has a dedicated legal and government product tier, indicating meaningful investment in that buyer segment. The platform's co-review features (up to 5 users on the Premium plan) and compliance template customisation are designed for teams where multiple reviewers need to collaborate on a document before it's finalised.

If your redaction volume justifies a dedicated workflow tool with formal enterprise compliance credentials, iDox.ai is worth a serious look.

How RedactProof processes documents differently

RedactProof's standard detection engine runs entirely in your browser using WebAssembly. Your documents are processed locally - they are not uploaded to any server. Only the cryptographic hash of the final redacted document is sent server-side (for generating a tamper-evident verification certificate. The original files, the extracted text, and the detected entities stay on your device throughout.

The Precision Engine sends extracted text (not the original file) to Cloudflare Workers AI for enhanced detection. Text is processed in-memory and is not stored or used for model training. If your organisation's policy prohibits any data leaving the device, the standard engine covers that requirement completely.

This architecture matters for organisations handling documents they cannot or prefer not to transmit - draft legal advice, active case files, commercially sensitive contracts, medical records. For a closer look at the trade-offs between browser-based and server-based tools, our guide on browser-based vs desktop redaction covers the differences in more depth.

Feature comparison

The table below reflects the state of both products at the time of writing (May 2026). Verify current details on each vendor's website before purchasing.

Pricing comparison

iDox.ai uses a page-based subscription model. At the time of writing (May 2026), pricing on idox.ai/store is as follows: Value Pack at $10/month (100 pages/year, single user); Starter at $39/month or $390/year (5,000 pages/year); Premium at $89/month or $890/year (50,000 pages/year, co-review with up to 5 users). Enterprise plans (minimum 3 users, 50,000+ pages/year) are custom-priced via sales contact.

RedactProof pricing is per-seat with unlimited pages on all paid tiers. Core is £19/month (£190/year) and includes on-device AI detection, professional exports, pixel-burn redaction, tamper-evident certificates, and OCR text restoration. Pro is £79/month (£790/year) and adds the Precision Engine, full audit trail, and priority support. Team is £249/month (£2,490/year) for five seats with team admin features.

For a small team redacting a few hundred pages a month, the pricing structures are broadly comparable. Where volume is unpredictable - some months 200 pages, others 2,000 - RedactProof's unlimited model is more predictable to budget. For a team running consistent high volumes above 50,000 pages/year, iDox.ai's Enterprise tier may make more sense operationally.

For a broader view of the market, our redaction software buyer's guide covers how to evaluate tools against your organisation's specific requirements.

Security and compliance architecture

iDox.ai's cloud infrastructure uses AES-256 encryption at rest and SSL/TLS (2048-bit) in transit, aligned with FIPS 140-2 standards. Their SOC 2 examination was conducted by AARC-360 against the AICPA Security Trust Service Criteria. The ISO 27001 certification covers their information security management system. These are independently audited claims with real audit trails behind them.

RedactProof's privacy model is architectural rather than certification-based: there is nothing to audit about third-party data handling because the standard engine sends no document data off-device. The security posture is "no upload" rather than "audited upload handling". For buyers whose security requirement is keeping files off external infrastructure entirely, certification of that infrastructure is not the relevant control.

For organisations where the no-upload model is the deciding factor, our overview of overlay vs pixel-burn redaction explains the deeper technical difference between redaction methods that matter for permanent data removal.

Which tool fits which team

iDox.ai is the more natural fit for enterprise procurement teams, regulated industries with formal vendor certification requirements, government buyers needing GSA/TAA compliance, and teams running very high document volumes where server-side batch processing is operationally important.

RedactProof fits legal professionals, compliance officers, HR administrators, and regulated small-to-medium teams who need fast, accurate redaction without their files leaving the browser. The tool requires no installation, no IT approval, and no procurement cycle - you can be redacting in minutes from any modern browser. For legal teams specifically, our guide to redaction software for lawyers covers the specific requirements of legal practice.

Free access includes unlimited pattern-based detection, pixel-burn redaction, and professional exports. No credit card, no installation. Core and Pro tiers add AI detection, tamper-evident certificates, and full audit trail for teams with ongoing redaction workflows.