---
title: "Redactic (@redactic) | Hashnode"
description: "Redaction and masking for PDF, Word, Excel and scanned documents. Read the latest articles by Redactic on Hashnode."
url: "https://hashnode.com/@redactic"
---

@redactic

# Redactic

@redactic · Joined November 2026

Redaction and masking for PDF, Word, Excel and scanned documents.

### [Why a black box drawn on a PDF does not remove the text under it](https://redactic.hashnode.dev/why-a-black-box-drawn-on-a-pdf-does-not-remove-the-text-under-it?utm_source=hashnode&utm_medium=feed)

A PDF page is a list of drawing instructions. Text is placed with one set of operators, rectangles are filled with another, and the viewer paints them in order. When someone draws a black rectangle ov

3 min read · [redactic.hashnode.dev](https://redactic.hashnode.dev/why-a-black-box-drawn-on-a-pdf-does-not-remove-the-text-under-it?utm_source=hashnode&utm_medium=feed)

[9h ago](https://hashnode.com/posts/why-a-black-box-drawn-on-a-pdf-does-not-remove-the-text-under-it/6af49aef2c7eb8fc5d3d2d52)