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Redacta
What it is
Redacta is a web tool that uses AI to redact or pseudonymise sensitive information in PDF documents from plain-language instructions. It can find and permanently remove details such as names, email addresses, phone numbers, Social Security numbers, addresses, and account numbers. It can also detect images inside PDFs, including photos, signatures, logos, and screenshots, and redact them. For pseudonymisation, it substitutes real names, addresses, and identifiers with realistic fictional alternatives while keeping the document readable. Redacta says its output preserves the source PDF’s formatting, layout, fonts, and page structure. PDF parsing and redaction run in the browser using WebAssembly and MuPDF; the site says files are not uploaded to a server. AI processing requires a user-provided Google Gemini or OpenAI API key, and those requests go directly from the browser to the provider. Its free trial tier sends extracted text through a backend proxy. Redacta is open source, requires no signup or installation, and adds no watermarks. The free plan has no usage limits, but users pay any API charges from their own key.
For and against
For
- Redacts text and images in PDFs.
- Can substitute fictional identifiers while preserving readability.
- PDF processing runs in the browser.
- No signup, installation, or watermarks.
- Free plan has no usage limits.
Against
- AI processing requires a personal provider API key.
- Users pay charges incurred through their API key.
- Free trial routes extracted text through a backend proxy.
The verdict
Redacta combines PDF text and image redaction with pseudonymisation and browser-based processing. Its free plan has no usage limits, though AI processing requires a personal API key and the free trial tier routes extracted text through a backend proxy.
Who it suits
Redacta may suit legal, HR, healthcare, financial, university, and research teams that handle sensitive PDF information. It is also relevant to users who need to replace identifying details with fictional alternatives.
Plans and prices
Free
No usage limits · requires your own Gemini or OpenAI API key for AI processing; API usage is billed by the provider
Read 8 Oct 2026 · redacta.khattar.dev
On the record
- AI providers
- Users can supply their own Google Gemini or OpenAI API key, with AI requests sent directly from the browser to the provider.redacta.khattar.dev · read 8 Oct 2026
- Formatting
- The site says redacted PDFs preserve their original formatting, layout, fonts, and page structure.redacta.khattar.dev · read 8 Oct 2026
- Image redaction
- It can detect and redact images embedded in PDFs, including photos, signatures, logos, and screenshots.redacta.khattar.dev · read 8 Oct 2026
- Intended users
- The site lists legal professionals, HR teams and recruiters, healthcare providers and researchers, financial institutions, universities, and research institutions among its use cases.redacta.khattar.dev · read 8 Oct 2026
- Limits and cost
- The site describes the tool as free with no usage limits; users pay any AI API charges incurred through their own key.redacta.khattar.dev · read 8 Oct 2026
- Open source
- Redacta describes itself as open source.redacta.khattar.dev · read 8 Oct 2026
- PDF processing
- PDF parsing and redaction run in the browser using WebAssembly (MuPDF), and the site says PDF files are never uploaded to a server.redacta.khattar.dev · read 8 Oct 2026
- Pseudonymisation
- It can replace real names, addresses, and identifiers with realistic fictional alternatives while preserving readability.redacta.khattar.dev · read 8 Oct 2026
- Purpose
- Redacta uses AI to redact or pseudonymise sensitive information in PDF documents from plain-language instructions.redacta.khattar.dev · read 8 Oct 2026
- Setup
- Redacta requires no signup or installation and adds no watermarks, according to the site.redacta.khattar.dev · read 8 Oct 2026
- Text redaction
- It detects and permanently redacts personally identifiable information such as names, email addresses, phone numbers, Social Security numbers, addresses, and account numbers.redacta.khattar.dev · read 8 Oct 2026
- Trial privacy
- The site says its free trial tier routes extracted text through a backend proxy.redacta.khattar.dev · read 8 Oct 2026
