I loved Zen Browser. The minimal interface, the vertical tabs, the calm aesthetic — it felt like the browser Firefox should have been. And when I discovered Zen Glance, the built-in link preview feature, I thought I had found the perfect setup.
Then reality set in.
Zen Glance is not just limited — it is fundamentally broken for anyone who actually needs to use it. After six months of frustration, I switched to GoPeek. Here is what went wrong, what I found instead, and why I am not going back.
What Zen Glance Promises
Zen Glance is Zen Browser's native link preview feature. The idea is simple and appealing: hover over a link (or use a keyboard shortcut) and a preview of the linked page appears in a panel. No new tab. No context switch. Just a quick look.
On paper, it sounds perfect for Zen's minimalist philosophy:
- Built into the browser — no extensions needed
- Matches Zen's clean aesthetic
- No additional memory overhead from extensions
- Native integration with Zen's vertical tab system
The problem? It does not actually work well enough to use.
The 5 Pain Points That Broke Zen Glance for Me
1. The Window Is Enormous
Zen Glance opens a preview panel that takes up roughly 60% of your screen. On a 13-inch laptop, it covers almost everything. You cannot resize it. You cannot make it smaller. It is a full-page preview that behaves like a popup ad.
2. No Side-by-Side Comparison
You can only open one Glance at a time. Want to compare two papers? Two product pages? A dataset and its methodology? Impossible. Close the first, open the second, forget what the first said. Repeat.
3. Keyboard Shortcut Conflicts
Zen Glance uses Alt+Click to trigger. But Alt+Click is also how you download files in most browsers, how you select text in some apps, and how Zen itself handles certain tab actions. The conflict is constant and infuriating.
4. The "Bump to Wrong Tab" Bug
When you close a Glance, Zen sometimes bumps your focus to a completely different tab — not the one you were on, not the one you previewed, but some random tab from 20 minutes ago. This happens frequently enough that you start dreading closing Glances.
5. Choppy Performance on Lower-End Hardware
Zen Browser itself is lightweight. But Zen Glance renders full web pages in an overlay, and on machines with 8GB RAM or integrated graphics, it stutters, lags, and occasionally crashes the browser. The feature that was supposed to save resources ends up consuming them.
My Switch Timeline
Month 1: Excitement
Discovered Zen Glance. Thought it was brilliant. Used it for quick reference checks.
Month 2: Annoyance
The giant window started bothering me. Could not resize it. Started avoiding Glance for small checks.
Month 3: Frustration
The wrong-tab bug hit me daily. Lost my place in research sessions multiple times. Started opening tabs instead — defeating the purpose.
Month 4: Search
Looked for Zen Glance alternatives. Tried Hover Zoom+, Imagus, and a few others. None worked well in Zen.
Month 5: Discovery
Found GoPeek. Installed it in Zen Browser (via Firefox extension compatibility). Immediately noticed the difference.
Month 6: Commitment
Disabled Zen Glance entirely. GoPeek handles 100% of my link previews now. No crashes, no wrong tabs, no giant windows.
What GoPeek Does Differently
GoPeek is not just "Zen Glance but better." It is a fundamentally different approach to link previews:
| Feature | Zen Glance | GoPeek |
|---|---|---|
| Window size | Fixed, enormous (~60% of screen) | Fully resizable (drag corner) |
| Multi-preview | One at a time only | Multiple side-by-side (Multi-Peek) |
| Trigger | Alt+Click (conflicts with downloads) | Shift+Hover (customizable, no conflicts) |
| Focus on close | Often jumps to wrong tab (bug) | Returns to original tab reliably |
| Performance | Choppy on 8GB RAM / integrated graphics | Lightweight overlay, minimal resource use |
| Interactivity | Fully interactive | Fully interactive |
| Persistence | Closes when you click elsewhere | Stays open until manually closed; bubble minimize |
| Browser lock-in | Zen Browser only | Firefox, Edge, Chrome (cross-browser) |
| Sidebar mode | Not available | Draggable split-screen sidebar |
| Dynamic theme | Matches Zen's theme only | Adapts to the website being previewed |
| Privacy | Zen handles it | Zero data collection, local only |
| Price | Free (with Zen) | Free |
The Specific Moments That Sealed the Switch
It is one thing to compare features. It is another to live with the tools. Here are three specific moments where GoPeek saved me and Zen Glance failed me:
Moment 1: The Literature Review
I was reviewing 15 papers for a project. With Zen Glance, I had to open and close each preview individually. By paper #8, I had lost track of which ones I had already checked. The wrong-tab bug sent me to a random Wikipedia page twice.
With GoPeek: I opened 5 previews side-by-side (Multi-Peek), compared abstracts simultaneously, minimized the promising ones into bubbles, and closed the rest. Total time: 12 minutes. With Zen Glance, the same task took 35 minutes and left me frustrated.
Moment 2: The Product Comparison
I was comparing two software tools for my team. Zen Glance let me preview one product page. To see the second, I had to close the first. I could not remember the pricing of the first when looking at the second. I ended up opening both in tabs — the exact thing Glance was supposed to prevent.
With GoPeek: Two preview windows, side-by-side, both fully interactive. I clicked through features on both pages simultaneously. No tabs opened. No context lost.
Moment 3: The Late-Night Session
Working on my laptop (8GB RAM, integrated graphics) at 11 PM. Zen Glance opened a preview of a data-heavy page. The browser froze for 4 seconds. The preview rendered at 10 FPS. I closed it and opened the page in a tab instead — which loaded faster than the Glance overlay.
With GoPeek: Same page, same machine, same time. Preview opened instantly. Scrolled smoothly. No lag. No freeze. I checked the data, closed the preview, and went to bed 20 minutes earlier.
What I Miss About Zen Glance
I am not here to claim GoPeek is perfect or that Zen Glance is useless. There are two things I genuinely miss:
- Native aesthetic: Zen Glance matches Zen's design language perfectly. GoPeek looks good, but it is an extension — it does not blend in quite as seamlessly.
- No installation: Zen Glance works out of the box. GoPeek requires installing an extension. For non-technical users, this is a small barrier.
But these are trade-offs I will make every time for functionality that actually works.
The Broader Problem: Built-In vs. Extension
Zen Glance is not uniquely broken. It is an example of a broader pattern: built-in browser features are often good enough to demo, but not good enough to depend on.
Browser developers have to balance dozens of features. A built-in link preview gets attention during development, then stagnates. Bugs persist. Feature requests sit in GitHub issues for months. Users are left with a half-working tool that the browser team has moved on from.
Extensions, by contrast, live or die by user satisfaction. If GoPeek has a bug, it gets fixed or users leave. If a feature is missing, it gets added or a competitor does it first. The incentive structure produces better tools over time.
Should You Switch Too?
If you are a Zen Browser user and Zen Glance works for you — genuinely works, not "works enough" — you do not need to switch. Simplicity has value. Native integration has value. One less extension has value.
But if any of these sound familiar:
- You avoid Glance because the window is too big
- You open tabs instead of using Glance because you need to compare sources
- You have lost your place because of the wrong-tab bug
- Your machine stutters when Glance renders heavy pages
- You wish you could resize, minimize, or multi-preview
Then GoPeek is worth trying. It takes 30 seconds to install. It works in Zen Browser (via Firefox extension support). And it solves every problem I described above.
The Bottom Line
I did not switch from Zen Glance to GoPeek because GoPeek is flashier. I switched because Zen Glance stopped me from working efficiently and GoPeek let me work the way I wanted to.
Zen Browser is still my daily driver. The vertical tabs, the minimal chrome, the calm aesthetic — I love all of it. But Zen Glance is the one feature I replaced. And I have zero regrets.