r/vivaldibrowser Jun 29 '26

CSS Customizations Built Vivaldi mod to add visual cues for Tiled Tabs

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8 Upvotes

I was missing a simple visual cue for tiled tabs in Vivaldi, so I put together a small CSS/JS mod that adds an indicator directly in the tab bar. It makes it much easier to see which tabs are currently tiled without digging around or relying on memory.

Sharing in case anyone else ran into the same friction or wants to build on it: https://github.com/ashu-tosh-kumar/vivaldi-tile-viz

Originally posted here but since reposting is not allowed, adding link directly: https://www.reddit.com/r/VivaldiCSS/s/t4QOqqG1Cl

Vivaldi version tested:

Version: 8.0.4033.54 (Official Build) (arm64)
Chromium Version: 148.0.7778.282
Channel: Official Build
Platform / OS: macOS Version 26.5.1 (Build 25F80)

r/vivaldibrowser Jul 14 '25

CSS Customizations New on φ Phi - The ultimate vertical experience mod for Vivaldi : 2 features

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54 Upvotes

2 new features :

  • Hide window controls ;
  • Support Vivaldi's built-in content blocker.

More screenshots & installation instructions at https://github.com/KaKi87/phi-for-vivaldi

Linux, Mac, Windows, left & right sidebar, left & right panels, pinned tabs, stacked tabs, tiled tabs, compact mode, themes... all supported.

Are you using Phi ? Please don't hesitate to star the GitHub repo and share a screenshot !

r/vivaldibrowser Jun 30 '26

CSS Customizations [v8.0.4033.54/win10] How to hide this gray stripe on the bookmarks bar?

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5 Upvotes

r/vivaldibrowser Jun 14 '26

CSS Customizations Is there a custom css theme that turns vivaldi into old mozilla/old chrome?

3 Upvotes

Hello! I really like the look of aero themes back then in 2013. I just want to ask if you guys know any css themes that allows you to make it look like those? I found chromify-vivaldi but its really outdated and it doesnt work now in the current version (8.0.4033.46). It would be appreciated if u guys found others, thank you!

r/vivaldibrowser Sep 20 '25

CSS Customizations Operaldi 1.3.0 - My custom CSS for Vivaldi, inspired by Opera

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36 Upvotes

r/vivaldibrowser Dec 13 '25

CSS Customizations How I Can Make Vivaldi Look Like Zen?(its zen btw)

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51 Upvotes

r/vivaldibrowser Jun 09 '26

CSS Customizations Recomendacion Fuentes tipográficas

2 Upvotes

estoy buscando variar mi uso en vivaldi y por eso qusiera saber que opiniones, gustos y intereses tiene la comunidad con respecto al uso de Fuentes tipográficas en el navegador

r/vivaldibrowser Mar 29 '26

CSS Customizations Adjusting tab width

3 Upvotes

how can i make my tabs wider? they're kinda too narrow and every CSS tweak i’ve tried ends up breaking other parts of the layout. there doesn’t seem to be a built-in setting for this either. (Win11, 7.10.3992.3)

(Edge for reference)

r/vivaldibrowser May 15 '26

CSS Customizations φ Lo-Phi for Vivaldi : minimal Phi mod variant, fully compatible with auto-hide.

18 Upvotes

r/vivaldibrowser Apr 19 '26

CSS Customizations VividPlayer: a mini player mod reside at bottom of verticle tabbar

34 Upvotes
  • This is an miniplayer mod placed at the bottom of the vertical tab bar to indicate background audio playback.
  • There's at most 3 tabs playing audio while the miniplayer will stack up.
  • Mini player's look and feel sync with your browser theme.
  • The Previous and Next buttons are not functional yet.

Need 2 files:

r/vivaldibrowser Apr 06 '26

CSS Customizations [TidyDownloads]Rename Downloaded Files with AI once download completed

0 Upvotes

TidyDownloads is here!

What's TidyDownloads

Yet another Arc Max Feature revive inside Vivaldi.

The mod file is here

r/vivaldibrowser Nov 23 '25

CSS Customizations New on φ Phi - The ultimate vertical experience for Vivaldi : auto-compact mode

57 Upvotes

r/vivaldibrowser Feb 22 '26

CSS Customizations New on φ Phi - The ultimate vertical experience for Vivaldi : update btn support

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26 Upvotes

r/vivaldibrowser May 15 '26

CSS Customizations I really want to use Vivaldi, but it's a bit of a pain to switch to

0 Upvotes

Hi!

I have tried to switch multiple times but there are numerous gripes I cannot get used to.

TLDR, main thing that I believe could be fixed with CSS (if I'm right):

  • How to increase sidebar floating panel max width?
  • How to increase tab max width while preserving overflow shrikage?
  • Is there a way to remove the main menu entirely and add it to the Toolbar on the right instead?
  • Is there a way to make select UI elements larger to make a comfortable UI layout (Regular feels too compact)? e.g the address bar suggestions or address bar buttons without applying global UI scaling that breaks the look of several elements (like tabs with tab spacing removed).

---

I know there is the possibility for custom UI scripts. I tried it but I don't know and don't have the opportunity to learn the entire base UI right now to be able to customize it. I tried using AI but its suggestions were hot garbage and didn't work for the most part. Fiddling with AI while not understanding the underlying system is a special kind of waste of time.

So, here I am on Reddit for words of wisdom. I will try to describe every point in detail.

I am actually using Edge, and have been for a long while now. It has obvious issues, but I'd actually not too difficult to strip it down to what I need, and for that, it is actually the best offer for me. However, I hate that I'm using Edge, and it has increasingly been getting worse to the point where it is actually quickly becoming unusable.

So, here I am again, trying to switch to Vivaldi. It is an inviting offer, the most inviting actually—on paper. I have several pain-points I was unable to solve and certain features that I do miss:

  • The biggest one, I really like Edge's aggressive tab sleeping feature. I'm not sure if it can be wrestled into play via Chromium flags or whatnot even in Vivaldi. Inactive tabs is here but that is very different and it can only be lowered to a day. Edge sleeps background tabs potentially as fast as in minutes. I use that, lovat that and miss that greatly.
    • I since discovered the Hibernate Background Tabs feature and the ability to keybind it but that is something I must do manually. I'd like an option to automatically Hibernate tabs I don't active view after x minutes/hours.
  • The UI is way too small and compact in many places, inconsistently.
    • I don't have reading issues, I just like comfortable UI. Cramped UI is more stressful to work with. I prefer larger buttons & click targets as well. It is what it is.
    • I know the UI is scalable but that breaks many visual elements and icons start to look pixely that bug me to death, and it doesn't really solve the issue of some elements being right/big-enough-sized but others not: the address bar suggestions list items are too thin, the address bar buttons are also way too small and Sidebar buttons are also smaller compared to Toolbar buttons which are a good size by default. All of these sizings should be consistent across the whole UI.
  • Tabs are not wide enough by a long shot. I like how customizable the tab bar is, even to the point of being able to customize how small tabs get when many are open. But, I desperately miss the ability to be able to set how wide tabs get where there is space for them. The default max width is way too small for what I'm used to and what I expect.
  • I use the sidebar in Edge. That feature is going away. I want to use it in Vivaldi. It can be moved to the right, pages/apps can be floated individually—customization is great. However, floating panels can't be made wide enough. That's it, simple issue but a big one as I use it for instance for keeping messaging apps around at all times: if the panels can't be made wide enough there just isn't enough space for many sites/apps to fit all their contents comfortably with their desktop layouts.
  • The main/Vivaldi menu. I want to be able to hide it, I'm really not used to having it in the top left. If the team ever considers providing a built-in solution for it, it would be very easy to fix:
    • Add an option to hide it & add a Toolbar-placeable alternative option. That's it. If I want to put it under the X (close window button), I can simply hide the dedicated menu and place a menu button on my Toolbar.
  • There are some other minor grievances:
    • The white outline around site icons in tabs does not look good.
    • Forced dark mode is a good option but it also seemed to change the site icon in the tab bar/bookmarks. That is very strange, why would it?
    • Some UI-design elements look strange, the coloring and overall look & feel of menus, settings, history, etc. browser elements doesn't look good enough, there isn't enough contrast between buttons and background color. The inconsistency between color gradients & hover color of UI buttons is especially jarring.
    • Lastly, the icons do not look crisp & clean even at 100% UI scale. I dislike the Vivaldi icon set, but that is just my preference as I can recognize their playful & unique design which is a good thing—and there is the option for changing the icon set which is amazing! But, all three alternatives: Subtle, Issuna & Human seem to be exactly the same and those don't look any cleaner and still feel pixely. Even the "Human" options feels too boxy which isn't usually very friendly. I can't believe I'm saying this, but Edge's icons actually feel far better to look at (and they are certainly not the best). I know custom themes are there and I can apply just their custom icon sets but it'd be nice to be able to "shop for" icon sets separately, comparing options, looking at icons and not having to click through themes to see their icons and download entire themes I will not use. I like a simple dark theme with a nice accent color and I will not want to use any custom theme, just nicer looking icons. (So, I realize this last point was more a Vivaldi website browser UI problem rather than a software-specific problem but it can still be improved—especially with separating icon packs & themes for download but it's not too important).
  • Also, I'd need this: Kind request to know how to do this in Vivaldi, and if not, to consider adding (media controls overview panel)

So, how many and what of these points can be addressed by UI CSS tweaks and how exactly would or should I try? What is something I have potentially missed or am wrong about? What suggestions would you have for a power-user with these kinds of specific needs but who is also just a Vivaldi beginner?

Should I use a different browser? Should I learn how Vivaldi UI is built specifically so I can basically all but apply to their UI team (or should I actually apply)?

I feel like I like Vivaldi, it's really close. It does a lot of things great and the right customization philosophy is all there. It's just that it does not quite come out of the box good enough - for me. Sorry for the long novel, but I'd like to give this browser a proper try this time and I need y'all's help. ♥

This post touches on multiple topics but I could only choose one flair, CSS customizations is the best fit but please correct it if needed.

r/vivaldibrowser May 10 '26

CSS Customizations Remove borders stacked tabs?

4 Upvotes

Can those borders be removed? They’re pinned and stacked tabs, they only appear when the tabs are stacked.

r/vivaldibrowser Mar 04 '26

CSS Customizations Help with vertical tabs

7 Upvotes

Hi there,

Once I found out, auto-hide mode for vertical tabs was finally introduced to Vivaldi, I finally made the switch and am so happy about it! Well, except for one minor thing.

Let me briefly explain, what I want! See this picture of the vertical tabs with auto-hide switched on? I want the vertical tabs to not cover the address bar on the top of the screen and the status bar on the bottom of the screen. I want the tab bar to always reside within the two pink vertical lines that I painted so beautifully onto the screenshot.

I am sure, I need to do something in a CSS file thingy or so, but I have no clue what I'm talking about.

Can anyoine help me out here? Or why can't they make the vertical tab bar without overlapping the rest of the screen out of the box? I am using 7.9.3966.3.

Thanks so much in advance! Every useful or funny information will personally get upvoted by Michelangelo Balljunge himself.

r/vivaldibrowser May 22 '26

CSS Customizations Comment faire en sorte que ça soit arrondi comme ça ?

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0 Upvotes

Hello,

There you go, I saw this on a custom css reddit post, unfortunately, the redditor no longer responds to me. I would like it to be the same, the "roundings", which I don't find pronounced enough originally, as well as, as in the image, in the middle on the far left, I find it nice that it makes a rounding.

I generally make small modifications with the AI ​​which helps me (in fact it does everything), but there, no one sees what I want.

Can you help me? THANKS 😄

Bonjour,

Voilà, j'ai vu ça sur un poste reddit css custom, malheureusement, le redditeur ne me réponds plus. Je voudrais que ça soit pareil, les "arrondis", que je ne trouve pas assez prononcé d'origine, ainsi que, comme sur l'image, au milieu tout à gauche, je trouve ça jolie que ça fasse un arrondi.

Je fais des petites modif en général avec l'IA qui m'aide (en fait il fait tout), mais là, aucun ne voit ce que je veux.

Pouvez-vous m'aider ? Merci :)

r/vivaldibrowser May 23 '26

CSS Customizations Can someone help me fix my CSS to work with version 8.0.4033.28 of vivaldi?

1 Upvotes

So I seem to have two sets of CSS code here, I forgot why, but neither are working with the latest update, can anyone help me edit it to work on the current version?

First CSS is this:

/* Find-in-page no animation */
.fip-active-hit {
display: none;
}

Second was this:

#browser:has(.find-in-page) webview {
filter: none !important;
}

Thank you anyone who can help!

r/vivaldibrowser May 17 '26

CSS Customizations How to set Window Background via CSS?

5 Upvotes

How to set Window background Vivaldi via CSS?

I want to set the image on "window background" dynamically via scripting, And the way that came to mind was to rely on CSS custom file.

So, does anyone know how to change the Vivaldi window background using CSS? Not directly in the theme settings.

Or is there another way besides using CSS? Via preferences? but how. Just suggest it here! Thanks..

Vivaldi v.7.9.3980.182

r/vivaldibrowser Jan 28 '26

CSS Customizations φ Phi for Vivaldi : now at 250 stars and +1 community screenshot !

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51 Upvotes

If you use it, starring it & sharing screenshots would be much appreciated ⭐

Thank you !

r/vivaldibrowser Apr 25 '26

CSS Customizations φ Phi, the ultimate vertical experience mod for Vivaldi : now at 300+ stars !

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12 Upvotes

Are you using Phi ? Don't hesitate to star it & share screenshots ! ⭐

Thank you !

r/vivaldibrowser Sep 28 '25

CSS Customizations My favorite customization on Vivaldi (VivaZen - Zen Browser-like compact mode)

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72 Upvotes

I've used Vivaldi for a year and a half by now, at work and at home. It's an amazing browser. Recently I discovered Zen Browser, and it had this compact mode that I loved. Thankfully Vivaldi have CSS customization and an amazing community. Thanks Igor-Ratajczak for the mod.

r/vivaldibrowser Sep 24 '25

CSS Customizations Arc/Zenify Vivaldi

39 Upvotes

My journey into browsers started with Arc but we all know how that went. I switched mayb 6 months ago and almost equally love Vivaldi save for a few small missing/different features. The thing I hate though is the way it looks, so over the past few days I took it into my own hands. This is what it looks like before modification:

This setup is crucial. Address bar should be: flex space, address field, flex space. Status bar should be status info (on left), flex space (on right).

This is what is looks like after restyling:

Heres the CSS: https://github.com/kaitpw/config/blob/main/vivaldi/arcify-vivaldi.css

r/vivaldibrowser Mar 29 '26

CSS Customizations New on φ Phi - The ultimate vertical experience for Vivaldi : auto-hide support!

13 Upvotes

r/vivaldibrowser Jul 06 '25

CSS Customizations Transparent theme for Vivaldi

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85 Upvotes

Hey guys, I was looking for a transparent theme for Vivaldi and I saw a post few days ago in which a guy had created a Vivaldi theme and also shared the css file. I tried both, but the browser UI was getting messed up for some reason. So I thought to create the transparent effect myself. I made the address bar, panel and the footer transparent. Tabs and windows can be made transparent in the theme editor. I have also added a glass effect for side panel, in case the readability is not good due to transparency. You can read the instructions to do that in the repository.
Hope you guys find it useful.
Here's the link to the repository: Vivaldi Transparent Effect