Sidebar Toggle

A tiny browser extension that hides sidebars and top bars on a few sites so you can reclaim screen space — plus a YouTube "cinema dim" mode.

Site	What it hides
old.reddit.com	the right sidebar (widens the post column)
YouTube	the top bar and the left guide sidebar (just the videos)
GitHub	the global top navigation header
Miruro	the fixed top bar and the server-status banner (closes the gap they leave)

Demo

Shortcuts

• Ctrl+Shift+E (⌘+Shift+E on macOS) — toggle hide on the current supported site
• Ctrl+Shift+X (⌘+Shift+X on macOS) — YouTube only: toggle cinema dim (blacks out the page around the player on watch pages)

Click the toolbar icon to open the popup, where you can toggle the current site, toggle cinema dim, and choose which sites the extension is active on. Shortcuts are rebindable at chrome://extensions/shortcuts (or edge://extensions/shortcuts; on Firefox, about:addons → ⚙ → Manage Extension Shortcuts).

Browser-reserved shortcuts: a browser will not hand an extension a combo it already uses for itself, and it refuses silently — the command simply ends up with no shortcut. Ctrl+Shift+X is clear in both Chrome and Edge, so cinema dim binds itself on install. Ctrl+Shift+E binds on Chrome but not on Edge, which keeps it for sidebar search; Edge users get hide unassigned until they set it themselves on the extension-shortcuts page, after which their binding wins. The popup now says so explicitly when it happens, rather than leaving you to find out by pressing the keys. Everything is always available from the popup, so the shortcuts are purely a convenience.

Install from source (unpacked)

Chrome / Edge

1. Clone this repo.
2. Open chrome://extensions (or edge://extensions) and enable Developer mode.
3. Click Load unpacked and select the src/ folder.

Firefox

1. Build the Firefox package: pwsh -NoProfile -File scripts/pack.ps1 -Target firefox.
2. Open about:debugging#/runtime/this-firefox → Load Temporary Add-on….
3. Select dist/firefox/manifest.json. (Temporary add-ons last until you restart Firefox.)

Chrome/Edge load src/ directly, but Firefox needs the built dist/firefox/ because that manifest carries the add-on id storage.sync requires. On first use Firefox may ask you to grant access to each supported site (Firefox treats host permissions as opt-in) — allow them so the toggles work.

Build store packages

pwsh -NoProfile -File scripts/pack.ps1                 # both (default)
pwsh -NoProfile -File scripts/pack.ps1 -Target chrome
pwsh -NoProfile -File scripts/pack.ps1 -Target firefox

From the same src/, this produces:

• dist/sidebar-toggle-<version>.zip — Chrome Web Store and Microsoft Edge Add-ons.
• dist/sidebar-toggle-<version>-firefox.zip — addons.mozilla.org (AMO), with a Firefox-flavoured manifest (add-on id + event-page background; only manifest.json differs). The unpacked build is left at dist/firefox/ — validate it for AMO with web-ext lint --source-dir dist/firefox.

Privacy

No data is collected and nothing is sent anywhere. All state — which sites are active and what is currently hidden — lives in chrome.storage.sync. The extension only has access to the supported domains listed above.

License

GPL-3.0. Icon by Gregor Cresnar — see CREDITS.