Fix macOS 26 (Tahoe) exaggerated rounded corners

47•guessmyname•3h ago

Comments

altairprime•2h ago

The title is misleading: this only modifies the desktop rounded corners, not the app window corners (heavily discussed recently at HN and elsewhere).

The blog post about this is slightly interesting, but mostly feels like a candidate’s position paper on rounded corners, rather than an newsworthy or technical explanation: https://medium.com/@makalin/reclaiming-the-screen-a-develope...

The core innovation is the ctx.fill calls here: https://github.com/makalin/CornerFix/blob/main/Sources/Corne...

frizlab•1h ago

I still have no idea what this does. What on earth are the desktop rounded corners?

jaffa2•1h ago

Macs have rounded corners on the desktop. I.e 4 corners. It looked awesome in the CRT days because of the shape of them. These days on flat lcd screens the geometry is so good that they aren’t required to provide the same function as in CRT days but some people still like the look. I do, but i dont run extra software if i can help it especially for an aesthetic change. I used a tool like this is the past but there were incompatibility’s.

sho_hn•1h ago

I'm super confused. My Macbook desktop has no rounded corners. Both the menu bar and content against the bottom edge are sharp-cornered. Is this only for external screens?

brycewray•1h ago

> I'm super confused. My Macbook desktop has no rounded corners. Both the menu bar and content against the bottom edge are sharp-cornered. Is this only for external screens?

Running an Apple Studio Display here, and no rounded corners at any edges. So, just for non-Apple monitors?

duskwuff•1h ago

Not the case with a third-party display either.

Mister_Snuggles•4m ago

Running two Lenovo ThinkVision displays off of my work MacBook Pro.

On the MBP built-in display, the upper-left and upper-right corners are rounded. I believe this is due to the shape of the display. The bottom corners are not rounded.

On the external displays, the corners are all square.

carlosjobim•1h ago

The newest design of MacBooks with the notch have the top corners of the display rounded.

duskwuff•1h ago

Do those pixels even exist on the display? They certainly don't on the iPhone; the implied corners on those are physically outside the device.

frizlab•1h ago

Yeah I really thought (and actually still think) the rounded corners on the top left and right of the new(-ish) MacBook Pro are hardware. I know for sure they pre-date Tahoe!

carlosjobim•48m ago

They are hardware.

There's software like Top Notch if you want to make the bottom corners rounded also.

Etheryte•1h ago

Modern MacBooks models have rounded corners at the top right and top left corners of the screen, see [0]. The bottom corners don't do this and external displays don't do this. This is a stylistic choice to match the curvature of the laptop's edge. If you move your mouse along that corner it doesn't disappear behind the curve, it follows the curve.

[0] https://www.apple.com/v/macbook-air/x/images/overview/mac-pl...

frizlab•1h ago

I really think* the rounded corners on top-left and top-right of the MacBook Pros are hardware. There is no software in the world that can “fix” that…

* Try to move space on such a device, the non-rounded desktop appears…

davebranton•1h ago

The linked article on medium was also written by AI, which immediately disqualifies it from being interesting or useful.

"And the worst part? Apple didn’t provide a switch to turn it off."

Now see, this is AI. A normal human being would write, "Apple didn't even provide any way to switch off this non-feature" - for example. AI always, for reasons that are likely neither interesting nor especially illuminating, writes like this. Unnecessary and stupid stylistic choices everywhere.

Look, if you cannot be bothered to write something, why on God's Good Earth would anyone bother to read it?

locao•51m ago

I'm not saying you're wrong about this article being AI-written, but I know people who write like this, and I hate it.

Finnucane•13m ago

If AI does this, it's because it's ingested the last 25 years of bad internet headlines. Written allegedly by humans.

teekert•8m ago

And to be honest? It’s really annoying indeed.

mvdtnz•49m ago

> There’s also a consistency problem. If you use multiple monitors or virtual machines, the mismatch between macOS’s new roundness and other systems’ sharper corners creates visual friction. Once you notice it, you can’t unsee it.

I guess it's a good thing I never noticed it then? Of all the very real problems with Tahoe this one would never have even registered with me.

jrmg•46m ago

And the screenshot in the blog post is of a window with rounded corners!

cweagans•2h ago

Your GitHub repo and the associated medium article do a great job of describing the problem and the solution that you settled on. I don’t understand why you didn’t include a screenshot of what this looks like though. The suitability of your tool depends on what it looks like.

Please, always include screenshots in open source projects that are aesthetic in nature.

Jaxan•2h ago

Yeah, I am also confused they didn’t include a screenshot (or photo in this case). It’s the first thing you’ll want to see for such a project.

mrkpdl•50m ago

I came to say the same thing, a screenshot is all I want to see before diving deeper.

irq•45m ago

Thank you for posting this. It never ceases to amaze me how many open source GUI projects forget screenshots.

vishnuharidas•1h ago

A screenshot is the bare minimum for things like this.

puppycodes•1h ago

Thank you for the work but if you include an image of the problem why would you not include an image of the solution?

msephton•1h ago

I'm assuming it wasn't the creator that posted this here, and I'm also assuming that the OP has managed to get this working. So @guessmyname can you please post a screenshot of the "fix" in use?

cesaref•52m ago

This has reminded me that in System 7, the code for the window was a system resource (resource forks contained all sorts of code, icons, text dictionaries etc). Anyhow, if you dropped an updated window resource into your system with the correct resource id, you could change this default behaviour. A friend of mine wrote a round window for a clock app, and made a copy with resedit in the system, and a reboot later, all windows were round.

It was a very flexible and hackable system, very fragile, and no security whatsoever, but lots of fun!

ykl•44m ago

I think this project is best described by one of my favorite quotes from Top Gear: “an ingenious solution to a problem that should never have existed in the first place”.

Mogzol•17m ago

I have no idea what this is fixing.

> Note: This does not change the rounded corners of individual app windows. It only restores the straight silhouette at the edges of your display.

My display does not have rounded corners. I am on macOS Tahoe using external monitors. I know that newer macbooks have rounded display corners, but those are rounded at the hardware level afaik, those corner pixels simply don't exist. And besides that, the medium article linked in the repo specifically talks about external monitors. Does anyone have an example of what this program is actually meant to fix?

yokoprime•14m ago

A screenshot of the «after» would clear up a lot of confusion

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Study: Minimal evidence links social media, gaming to teen mental health issues

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Nanolang: A tiny experimental language designed to be targeted by coding LLMs

Show HN: An interactive physics simulator with 1000's of balls, in your terminal

From Nevada to Kansas by Glider

Notes on Apple's Nano Texture (2025)

Conditions in the Intel 8087 floating-point chip's microcode

The assistant axis: situating and stabilizing the character of LLMs

Weight Transfer for RL Post-Training in under 2 seconds

Sending Data over Offline Finding Networks

Show HN: A creative coding library for making art with desktop windows

Use Social Media Mindfully

CSS Web Components for marketing sites (2024)

Show HN: Pipenet – A Modern Alternative to Localtunnel

Bypassing Gemma and Qwen safety with raw strings

There's a hidden Android setting that spots fake cell towers

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A decentralized peer-to-peer messaging application that operates over Bluetooth

Fix your robots.txt or your site disappears from Google

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GLM-4.7-Flash

Fix macOS 26 (Tahoe) exaggerated rounded corners

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