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SuperchargeNavigation · Free

Glance Peek — Preview Links Without a Tab

Alt+Click a link to preview it in an overlay. Most sites preview; a few with strict framing headers may not. Close it, or promote to a full tab.

Updated

Glance Peek lets you read a linked page without leaving your current tab. Alt+Click a link and the target opens in an overlay. When you’re done, dismiss the overlay to return to exactly where you were, or promote the preview to a full tab if it’s worth keeping.

How It Works

By default the modifier is Alt; if you set the hint trigger key to Alt, the modifier becomes Shift automatically. The preview opens in a large card (85% of the viewport in both dimensions) over a dimmed version of the current tab. Most sites load inside it with JavaScript, images, and interactive content; a small number with strict framing headers may not.

Many websites use X-Frame-Options or Content-Security-Policy headers to block being displayed inside iframes (a standard anti-clickjacking measure). For Glance Peek to work reliably, SuperchargeNavigation uses Chrome’s Declarative Net Request API to create dynamic session rules that strip these blocking headers for the preview request. These rules are active only during the peek and are scoped to the preview session — they do not affect normal browsing.

Settings

OptionDefaultDescription
Glance PeekOnEnable or disable Alt+Click preview behavior

When to Use This

Reading news or articles: You’re scanning a list of links and want to check a few before deciding which to read in full. Alt+Click each one, read the gist, close what you don’t need, promote what you do.

Research: You’re on a search results page or a resource list. Glance Peek each link without accumulating a pile of open tabs. Decide as you go.

Checking references: You’re writing or researching and want to verify a linked source without context-switching away from your current page.

Complement to Super Drag: Super Drag opens links in background or foreground tabs; Glance Peek opens them in overlays.

Privacy

Glance Peek loads the linked page directly from its origin. The extension does not intercept, log, or transmit any content from the previewed page. The dynamic DNR rules used to strip framing headers are session-scoped and discard no browsing data. SuperchargeNavigation needs no SuperchargeBrowser account.

Frequently Asked Questions

How do I trigger a Glance Peek?
Hold Alt (the default modifier) and click a link. The target page opens in an overlay iframe on top of your current tab. If you set the hint trigger key to Alt, the modifier switches to Shift automatically.
What happens after I read the preview?
You can close the overlay and return to your current page, or promote the preview to a full tab if you want to keep it open.
Why can't I preview some sites?
Some sites set headers that block embedding in iframes (X-Frame-Options or CSP frame-ancestors). SuperchargeNavigation uses dynamic browser rules to strip these headers for the preview. Most sites work; a small number with aggressive framing restrictions may not preview correctly.
Does Glance Peek open new tabs in my tab bar?
No. The preview is an overlay on your current tab. Only if you choose to promote it does a new tab get created.
Can I disable Glance Peek?
Yes. It is enabled by default but can be toggled off in the extension settings.

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