CrabPDF

The tool provides a browser‑based workspace where PDFs can be opened, edited, and saved entirely on the local machine. It supports direct text manipulation, OCR conversion of scanned pages, annotation, find‑and‑replace, page reordering, merging, rotation, deletion, extraction, compression, and basic protection when exporting. Redaction is performed by flattening the altered areas rather than merely overlaying them.

All processing occurs client‑side with JavaScript, eliminating the need for accounts, cloud storage, or server‑side document handling. Users can verify the local‑first nature by disabling network access after loading the application, ensuring that files never leave the device. The interface is designed to feel like a document editor, offering a single canvas for the various PDF tools.

The software targets individuals who need quick, focused PDF modifications while keeping sensitive content private. It is suited for tasks such as correcting text, adding notes, extracting pages, or securely redacting information without relying on external services.