mousePDF

About

mousePDF is a browser-based PDF editor for editing, organizing, signing, converting, and processing PDF files without uploading documents to a server. Files are handled locally in the browser, so users can edit PDFs without an account, login, or server storage. The tool supports adding and replacing text, inserting images, highlighting and commenting, redacting content, filling forms, signing documents, and managing PDF pages. It also provides PDF merging, splitting, rotation, deletion, watermarking, compression, password protection, OCR text recognition, and conversion between PDF, Word, images, PDF/A, and PowerPoint. mousePDF supports 41 interface languages and works on modern desktop, tablet, and smartphone browsers. The service is free to use without watermarks or usage limits, with its functionality running locally on the user's device.

Problem & solution

Who it's for

People who need free, private PDF editing and conversion. 20+ functions in 41 languages

• Why That Black Box Didn't Redact Anything (And How to Actually Remove Sensitive Text From a PDF)

  Drawing a black box over text in a PDF hides it from your eyes, not from copy and paste. Here's why so many redactions fail (a few very publicly), what else hides inside a PDF besides the visible text, and a simple two-minute check to make sure confidential details are really gone before you hit send.

  NxGn Tools·Sep 10, 2026

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