Redline 1.0.3 is designed for desktop browsing and research. Browser capabilities shape how the side interface opens and which readable page content is available, but the local vault and research model remain the same.
Supported browsers
| Browser | Support | Primary interface |
|---|---|---|
| Google Chrome | Current desktop release | Chrome side panel and library tab |
| Microsoft Edge | Current desktop release | Chromium side panel and library tab |
| Brave | Current desktop release | Chromium side panel and library tab |
| Other Chromium builds | Best effort on current compatible releases | Behavior depends on WebExtensions and side-panel support |
| Mozilla Firefox | Desktop Firefox 142 or later | Sidebar with a tab fallback where needed |
| Mobile browsers | Not supported in Redline 1.0.3 | None |
Install Redline from the marketplace that matches your browser. Support may ask you to reproduce a problem on the current stable browser release.
Protected and unsupported pages
Browsers prevent extensions from running on some surfaces. Redline cannot preserve readable evidence, capture annotations, or restore highlights on browser settings, extension stores, extension-management pages, new-tab surfaces, many built-in PDF viewers, and other protected URLs.
Embedded documents, cross-origin frames, canvas-based readers, and pages that replace native text selection may also limit capture even when the top-level page itself is available.
https:// article. If Redline works there, the original surface is likely protected or structurally incompatible.Permissions and browser integration
| Capability | Why Redline needs it | Boundary |
|---|---|---|
| Website access | User-initiated readable capture, selection capture, highlight restoration, and local page metadata | No browser-internal protected pages |
| Active tab and tabs | Current title, URL, capture context, and content-script communication | Not a browser-history database |
| Context menus | Right-click page, selection, link, and image capture | Only when the user chooses an action |
| Downloads | Pass locally generated exports to the browser download flow | No automatic upload or remote backup |
| Local storage | Vault records, source captures, settings, and view synchronization | Specific to the current browser profile |
See the full privacy policy for the data-access and retention model.
Keyboard shortcuts
| Action | Windows / Linux | macOS |
|---|---|---|
| Save current page | Ctrl + Shift + S | Cmd + Shift + S |
| Open sidebar | Ctrl + Shift + Y | Cmd + Shift + Y |
| Open library | Ctrl + Shift + L | Cmd + Shift + L |
A browser, operating system, or another extension can reserve the same keys. Use the toolbar and browser extension-shortcut settings when a shortcut conflicts.
Known limitations in Redline 1.0.3
Highlight restoration follows the current page
Restoration depends on the saved text and nearby context still existing in a compatible document. Rewritten text, duplicated passages, client-side navigation, embedded viewers, or major layout changes can require review or prevent a match.
Local storage belongs to one profile
Redline does not synchronize profiles or devices. Clearing the relevant profile data or uninstalling the extension can remove the vault unless you created an All data JSON backup. Import restores vault records but keeps destination settings and does not include Domain Notes, view preferences, or Local Export History.
Readable witnesses are not complete page archives
Source Witness stores normalized readable text and capture metadata after an explicit user action. It does not retain scripts, styles, forms, cookies, login state, third-party assets, every network response, or a pixel-perfect rendering. Dynamic or application-like pages can produce an incomplete or unavailable comparison.
Citation metadata needs review
Websites often publish incomplete or inconsistent metadata. Generated fields and bibliography lines should be checked before formal use; style-like bibliography output is not guaranteed to be fully style-guide compliant.
Browser side interfaces differ
Chrome-family browsers and Firefox expose different side-panel and sidebar APIs. Redline falls back to an extension tab only when neither compatible interface is available.
Report a compatibility problem
Before reporting, record the exact Redline version, browser and version, operating system, page type, and whether the issue reproduces on a non-sensitive public page. The local support summary builder can format these details without submitting them.