# Silent Highlight — Web & PDF Highlighter

> Highlight any web page or PDF without signing up, with no cloud. 100% private and local. Organize with colors, tags, categories and Markdown notes. Export to Markdown or sync with Obsidian.

Canonical page: [https://chrome-stats.com/d/silent-highlight](https://chrome-stats.com/d/silent-highlight)

## Overview

- **ID:** `silent-highlight`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Profang
- **Category:** search-tools,bookmarks
- **Daily users:** 3
- **Weekly downloads:** 3
- **Version:** 3.0.11
- **Last updated:** 2026-08-30
- **First published:** 2026-05-05
- **Size:** 881 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/silent-highlight/)
- **Website:** [https://www.profang.ca/silent-highlight](https://www.profang.ca/silent-highlight)

## Description

Tired of highlighting extensions that force you to create an account or track your reading habits? Meet Silent Highlight.

Silent Highlight is a next-generation web and PDF highlighter built on a different philosophy: Zero Friction and Absolute Privacy. Simply install it, select text on any webpage or PDF, and start highlighting at the speed of thought. No sign-ups, no cloud, no lag.

✪ WHY SILENT HIGHLIGHT IS DIFFERENT

✔ 100% Private: No servers, no trackers. Your highlights stay on your device, in the browser's extension storage, and only leave it if you choose to export them.
✔ No Sign-ups: No account and no email address required. Works instantly right out of the box.
✔ Ultra-Lightweight: Engineered for speed and designed to stay out of your way.
✔ Premium Design: A modern glassmorphism interface that lives cleanly in the browser sidebar, keeping your reading space clutter-free.

✪ BUILT FOR DATA SOVEREIGNTY AND RESEARCH CONTINUITY

✔ Safety Net: Uninstall from Silent Highlight's own settings panel and it exports a JSON backup before removing itself. An automatic backup also runs before any bulk data import, and you can export a copy at any time.
✔ Data Integrity Protection: Built-in HMAC-SHA256 verification ensures your local database stays healthy and protected against corruption or external tampering.
✔ UX Resilience (Context Guardian): Silent Highlight reconnects automatically after an extension update. Keep working without interruptions or the need to reload your tabs.
✔ Legacy Migration: Updating from TextMark? All your old highlights and folders are migrated and cryptographically signed instantly in the background, for free.

✪ CORE FEATURES

✔ Select and Highlight: A beautiful, contextual floating toolbar appears exactly when you need it, with high-contrast icons for perfect visibility.
✔ Full PDF Support: Highlight text directly on web pages and local PDF documents using the integrated offline viewer.
✔ Color Coding: Organize your research using 5 vibrant highlight colors.
✔ Smart Sidebar: Open your command center (Alt+Shift+H, or Option+Shift+H on macOS) to search, filter, and manage all your highlights globally.
✔ Story Mode: Manually reorder highlights in the sidebar to build research outlines and logical narratives, regardless of the original source page.
✔ Tags and Notes: Add deep context to your highlights with custom tags and full Markdown-compatible notes.
✔ Universal Export: Download your data as JSON for backups, or as Markdown for direct import into Obsidian, Notion, or Readwise.

✪ OUR PRIVACY PROMISE

Silent Highlight is a pure tool for professionals, researchers, and students who demand the highest standards in privacy and technical reliability. No accounts, no cloud, no friction.

## Rankings

- #57,178 — Overall
- #121 — highlighter
- #206 — ux
- #223 — uninstall

## Permissions and access

### Permissions

- `storage`
- `scripting`
- `contextMenus`
- `tabs`

### Host permissions

- `http://*/*`
- `https://*/*`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has recently changed publisher email (might be a transfer in ownership)

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/silent-highlight)