KeptPDF

KeptPDF is a suite of PDF tools that runs entirely inside the user's web browser rather than on a remote server.

Key features and functions include:

On-Device Processing
Every tool operates locally using WebAssembly and JavaScript. Files are not uploaded, and the tools continue to function with the device offline after the page has loaded.

Redaction with Audit Certificate
The redaction tool detects categories of sensitive information (the vendor states 45 categories, including names, Social Security numbers, and account numbers) and flattens redacted pages to an image, removing the underlying text layer rather than covering it with a box. Each redaction can produce a certificate recording the input and output file hashes and the categories removed.

Privacy X-ray
A separate scanning tool checks a document for failed or incomplete redactions, hidden text, and residual metadata before it is shared.

Anonymize for AI
This tool replaces names, dates, and other identifiers with consistent placeholder tokens (e.g., "[PERSON_1]") so a document can be used with a third-party AI tool without exposing identifying details. The substitution is reversible within the same session.

Litigation Support Tools
The suite includes Bates numbering with per-custodian prefixes, exhibit stamps with divider sheets and an index, and a document comparison tool with a redline view. The vendor states the redaction output is designed to align with FRCP 5.2.

Signing and Forms
Tools are included for e-signature placement, form field detection and completion, and annotation.

Organization and Conversion
The suite also includes merging, splitting, rotating, and reordering pages; file compression; OCR for scanned documents; table extraction to spreadsheet formats; image-to-PDF and PDF-to-image conversion; and metadata inspection and removal.

Bulk Processing
A bulk-actions tool applies a selected function across multiple files in one pass; the free tier limits this to a small batch size and daily run count, with higher or unlimited use on paid plans.

Access and Deployment
No account is required to use the free tools. Paid plans use passwordless, email-based sign-in.