RedactProof vs SafeRedact: Browser-Based Redaction Compared
Both tools process documents in the browser without uploading files. The differences come down to PII detection depth, pricing structure, verification certificates, and batch processing support.
By RedactProof Editorial Team · May 1, 2026 · Updated May 10, 2026
At a Glance
How SafeRedact and RedactProof compare on the features that matter for secure redaction.
| Feature | SafeRedact | RedactProof |
|---|---|---|
| Browser-Based (No Install) | Yes - PDF rendered locally; extracted text sent to Anthropic Claude API for PII classification. | Yes - standard engine runs entirely via WebAssembly in your browser. Precision Engine sends extracted text to Cloudflare Workers AI. |
| Files Stay on Device | Yes - original PDF file never leaves your browser. Extracted text coordinates sent to Anthropic Claude API. | Yes - original PDF file never uploaded. Standard engine: no data transmitted. Precision Engine: extracted text only, processed in-memory, not stored. |
| AI PII Detection | AI detection powered by Anthropic Claude API. Detects names, addresses, SSNs, phone numbers, emails, dates, and financial account numbers - approximately 6-8 entity types explicitly listed. | 40+ PII types detected with confidence scoring. Runs locally via WebAssembly (standard) or via Cloudflare Workers AI (Precision Engine). |
| Verification Certificates | No audit trail or verification certificates. No record of redaction activity. | Ed25519 digital signatures on every export. QR code for offline verification. Full audit trail on Pro and Team tiers. |
| Pricing | Free (unlimited docs, watermarked output). $29/month or $99/year to remove watermark. Enterprise: custom. Day Pass: $12. | Free (unlimited pattern-based detection, no watermark - requires sign-in). Core: £19/month. Pro: £79/month. Team: £249/month. No per-document limits on any tier. |
Pricing accurate as of May 2026
This comparison is for general informational purposes only and does not constitute legal advice. Regulatory requirements vary by jurisdiction and change over time. Consult a qualified legal professional for advice specific to your organisation's circumstances.
The architecture question - answered
When people search for "browser-based redaction," they sometimes mean two different things. The first is a tool that has a browser interface but uploads documents to a server for processing - you are using a browser to interact with remote infrastructure. The second is a tool where the processing itself runs inside your browser, using WebAssembly or JavaScript, and the file never travels anywhere.
Both SafeRedact and RedactProof fall into the second category. Your PDF is rendered locally. Text extraction happens in your browser. The original file does not leave your device. At the time of writing (May 2026), SafeRedact sends extracted text coordinates to the Anthropic Claude API for PII classification, under Anthropic's contractual zero data retention policy. RedactProof's standard engine runs entirely via WebAssembly - nothing is transmitted. The Precision Engine sends extracted text to Cloudflare Workers AI, processed in volatile memory and not stored.
The privacy architecture is genuinely similar between these two tools. This makes the comparison more interesting - the meaningful differences are elsewhere.
How SafeRedact works
SafeRedact opens a PDF in your browser, extracts the text locally, and sends those text coordinates to Anthropic's Claude API for entity detection. The API returns positions of identified sensitive information - names, Social Security numbers, phone numbers, email addresses, physical addresses, dates, and financial account identifiers. You review the highlights, approve or remove suggestions, and download the output with pixel-burn redaction applied. No signup is required for the free tier, and the free tier has no document limit. The only free-tier restriction is a small watermark on the output.
The tool supports PDF, PNG, and JPG files. Multi-page PDFs are supported. Batch processing is not available on standard plans at the time of writing - documents are handled one at a time.
Where SafeRedact has the edge
The free tier. No signup, unlimited documents, full AI detection included. For someone who needs to redact a handful of personal documents without creating an account or committing to a monthly cost, this is a genuine advantage. RedactProof requires sign-in even for free use.
The annual price point is also lower. At $99/year (approximately £78 at the time of writing), it is roughly half the cost of RedactProof's Core annual plan. For an individual professional or sole trader with low-volume, straightforward redaction needs - the occasional contract, a personal disclosure response - SafeRedact's pricing is more appropriate.
Where RedactProof has the edge
Detection breadth is the sharpest difference. SafeRedact lists around 6-8 entity types. RedactProof detects 40+, including entity categories that matter specifically for UK compliance work: National Insurance numbers, UK postcode patterns, passport numbers, vehicle registration plates, and professional licence numbers. For a paralegal preparing a disclosure bundle or an HR administrator processing TUPE transfer documents, missing a NI number or a vehicle registration in the source file is a data breach. Breadth of detection is not an abstract feature; it determines what the tool actually catches.
Verification certificates are the second meaningful gap. After you redact a document and export it, you have a file. Nothing proves it has not been altered since. SafeRedact produces no audit record and no certificate at the time of writing. RedactProof generates an Ed25519-signed certificate with every export - tamper with the redacted file after export and verification fails. The QR code lets any recipient confirm the document's integrity without special software or a RedactProof account. For any workflow where you need to demonstrate to a regulator, counterparty, or court that the document was redacted correctly and has not been touched since, that matters.
Batch processing is the third. Redacting 50 files individually takes approximately 50 times as long as running them through a bulk workflow. SafeRedact's standard plans do not include batch processing. RedactProof's bulk mode is available on paid subscriber plans without an enterprise contract. Law firms running large disclosure exercises, councils processing FOIA requests, and HR teams managing redundancy rounds will feel this difference quickly. See our guide to bulk document redaction for more on that workflow.
Audit trail is a related point. SafeRedact produces no log of what was detected, what was approved, or when the document was processed. RedactProof's Pro and Team tiers include a full audit trail - useful for demonstrating a defensible redaction process to a regulator or in an internal review. If your organisation is handling Subject Access Requests or FOI responses where the process itself may be scrutinised, this is worth considering.
For more detail on how the certificates work technically, see our guide to verification certificates.
Feature comparison
The table below reflects both products at the time of writing (May 2026). Verify current details on each vendor's website before purchasing.
Pricing
At the time of writing (May 2026), SafeRedact charges $29/month or $99/year to remove the watermark from exported documents. There is also a $12 day pass for 24 hours of watermark-free exports. The free tier is unlimited in terms of document count - the only restriction is the output watermark. Enterprise pricing is custom.
RedactProof's free tier requires a sign-in but includes unlimited pattern-based detection and professional exports with no watermark. The Core plan is £19/month (£190/year) and includes unlimited AI detection across all documents - no per-document caps. Pro is £79/month and adds the Precision Engine, full audit trail, and priority support. Team is £249/month for five seats.
For straightforward, low-volume personal use, SafeRedact is cheaper. For professional teams that need AI detection without watermarks, audit trails, verification certificates, and batch processing, the cost comparison is less straightforward - the capabilities gap makes a direct price comparison less meaningful.
Which tool for which use case
SafeRedact is a reasonable fit for individuals and small businesses with occasional, low-complexity redaction needs - a sole trader redacting a contract before sending to a client, someone preparing personal documents for a rental application, or a small team that only occasionally handles sensitive files. The no-signup free tier reduces friction for one-off use. Our guide to browser-based vs desktop redaction covers the broader trade-offs if you're still deciding between tool types.
RedactProof fits teams with ongoing compliance workflows: legal professionals running disclosure exercises, HR administrators handling TUPE or SAR responses, compliance officers processing FOIA requests, and healthcare teams dealing with medical record redaction. The audit trail, verification certificates, 40+ PII types, and batch processing are built for those workflows rather than occasional personal use. If you're deciding whether redaction software is justified for your team, the redaction software buyer's guide covers how to evaluate your actual requirements.
Why Choose RedactProof over SafeRedact
The features that set RedactProof apart for secure document redaction.
Verification certificates and audit trail
SafeRedact does not include an audit trail or verification certificate in its output. At the time of writing (May 2026), there is no record of what was detected, what was redacted, or when the document was processed. RedactProof embeds an Ed25519 digital signature in every export - modify a single byte and verification fails. The QR code on the accompanying certificate lets anyone confirm document integrity without needing access to RedactProof at all. For a paralegal filing a disclosure bundle or a compliance officer responding to a Subject Access Request, that chain of evidence matters.
PII detection breadth
SafeRedact explicitly lists around 6-8 entity types: names, SSNs, phone numbers, email addresses, physical addresses, dates, and financial account numbers. RedactProof detects 40+ PII types, including National Insurance numbers, passport numbers, vehicle registration plates, IP addresses, professional licence numbers, and more. For a healthcare team handling HIPAA-defined PHI or an HR administrator processing TUPE documents, breadth of detection reduces the risk of something being missed.
Batch document processing
SafeRedact's standard plans process documents one at a time. Batch processing is available at enterprise tier only, at custom pricing. RedactProof's bulk mode is available to paid subscribers and supports processing multiple documents in a single workflow - relevant for law firms running disclosure exercises, councils processing FOIA requests, or HR teams handling TUPE transfers involving dozens of files.
Where SafeRedact has the edge
SafeRedact's free tier is genuinely more accessible than RedactProof's. No account is required, and unlimited documents can be processed with only a watermark on the output. For an individual who needs to redact the occasional document without committing to a subscription, that matters. The $99/year price point ($8.25/month) is also notably lower than RedactProof's Core plan. If your redaction needs are straightforward - a handful of personal documents, occasional professional use - SafeRedact's pricing structure may be more appropriate.
Common Questions
What people ask when comparing SafeRedact and RedactProof.
Does SafeRedact upload my files to a server?
No - the original PDF file is not uploaded. At the time of writing (May 2026), SafeRedact processes the PDF locally in your browser, extracts text and position coordinates, then sends only those coordinates to the Anthropic Claude API for PII classification. The PDF itself stays in your browser throughout. This is architecturally similar to RedactProof's Precision Engine, which also sends extracted text (not the original file) to Cloudflare Workers AI. Both tools keep the source document local.
Is SafeRedact free?
Yes, with a limitation. At the time of writing (May 2026), SafeRedact's free tier allows unlimited document processing with AI detection included - the only restriction is a watermark on the output. No signup is required for the free tier. To remove the watermark, pricing starts at $12 for a 24-hour day pass, $29/month, or $99/year. RedactProof's free tier requires a sign-in but includes professional exports with no watermark and no document limits for pattern-based redaction.
Which tool detects more PII types?
RedactProof. SafeRedact explicitly lists approximately 6-8 entity categories at the time of writing (May 2026) - names, SSNs, phone numbers, email addresses, addresses, dates, and financial identifiers. RedactProof's detection covers 40+ PII types, including entity categories less common in US-focused tools: National Insurance numbers, UK postcode patterns, passport numbers, vehicle registration plates, professional licence numbers, and IP addresses. For compliance work under GDPR or CCPA where broad PII coverage reduces the risk of missed data, the breadth difference is material.
Does SafeRedact provide an audit trail or verification certificate?
No. At the time of writing (May 2026), SafeRedact does not generate an audit trail or produce a verification certificate with redacted documents. There is no cryptographic record of what was redacted or evidence that the output has not been modified. RedactProof generates an Ed25519-signed certificate with every export. The certificate records what was redacted and when, and includes a QR code that lets anyone verify the document has not been altered since processing. For legal disclosure, regulatory evidence, or any workflow where a chain of custody matters, this difference is significant.
Can SafeRedact process documents in bulk?
Not on standard plans. At the time of writing (May 2026), SafeRedact's Day Pass, monthly, and annual plans process documents individually. Bulk processing at scale is listed as an enterprise feature, available at custom pricing. RedactProof includes bulk document processing on paid subscriber plans - no enterprise contract required. If you regularly need to redact batches of files, such as a disclosure exercise or a DSAR response containing multiple documents, the availability without enterprise pricing is relevant.
How your files are processed
PDFs are opened, rendered, and redacted entirely in your browser. Files are never uploaded.
Only cryptographic hashes and certificate metadata are stored - for tamper-evident verification.
Extracted text (not files) is sent to Cloudflare for enhanced detection. Processed in memory, never stored.
Try RedactProof now - no install needed
Open your browser, load a document, and start redacting in seconds. Your files stay on your device - not on someone else's server.
SafeRedact is a trademark of its respective owner. RedactProof is a product of Popsall Ltd and is not affiliated with or endorsed by SafeRedact. Anthropic and Claude are trademarks of Anthropic, PBC. Pricing and features accurate at the time of writing (May 2026). Verify current details on saferedact.app.