Show HN: AspectRat.io – Aspect ratio calculator and device resolutions resource | Better HN

Show HN: AspectRat.io – Aspect ratio calculator and device resolutions resource | Better HN

33 comments

qualitytime8y ago

Hey, good job.

I tend to look up aspect ratios frequently.

You went full on with a nice web page and domain name hack.

Add more devices (e.g. ipads etc.), video res (vga,etc.) and more mathematical constants like golden ratio, silver ratio , etc. and add an easy landscape/portrait toggle switch.

> Add more devices (e.g. ipads etc.), video res (vga,etc.) and more mathematical constants like golden ratio, silver ratio , etc. and add an easy landscape/portrait toggle switch.

I'd like to add: a specs dialog, maybe? Add DPI/HDPI info, recommended DPI for images, etc. Would make this a for-sure go-to.

Nice work!

ryanhefnerOP8y ago

Thanks! Yeah, definitely going to be adding more devices and common resolutions.

The site has a bit of Webkit-only CSS. Tip: don't use bleeding edge CSS like appearance, and if you do, at least test it in Chrome, Edge, and Firefox.

You can fix the broken CSS for Firefox by adding -moz-appearance in addition to -webkit-appearance.

https://developer.mozilla.org/en-US/docs/Web/CSS/-moz-appear...

ryanhefnerOP8y ago

Whoops, just pushed up a fix. Just threw this together and didn't test it like I should have. Should be good now.

sd8dgf8ds8g8dsg8y ago

Not sure why make a whole website of this

    w := 1900
    h := 1200
    divisor := gcd(w, h)
    aspect := fmt.Sprintf("%d:%d", w/divisor, h/divisor)

    func gcd(x, y int64) int64 {
        for y != 0 {
            x, y = y, x%y
        }
        return x
    }

Because my non-programmer friend can use a website, but not write a program.

This. I work in media. Just passed this along to a few designer friends, and even non-designers who work with magazine design teams and regularly have to translate images and resize/crop them for mobile and web.

edit: They're already happy to have it in their back pocket.

ryanhefnerOP8y ago

Exactly.

johnhenry8y ago

Worth mentioning that the page makes it explicit that it uses this library: https://github.com/ryanhefner/calculate-aspect-ratio/blob/ma...

ryanhefnerOP8y ago

Yeah, this is really more of a reference and a tool when you’re comparing sizes and confirming they are the same aspect ratio without having to use code. There’s also an NPM module that will do the code part if you need to go that route.

He/she/it hasn't heard of 1920x1200 :) All those devices are 16:9 i think?

ryanhefnerOP8y ago

Yeah, I need to beef up the devices/resolutions listing. What device(s) have 1920x1200?

Have an upvote.

The limit on ridiculous things people will somehow make into a "web service" knows no bounds.

ryanhefnerOP8y ago

Thanks. Yeah, not really a "web service", just a reference tool, along with an NPM module you can use.

Also, I’ll be extending the device/resolutions listing, so hopefully it can be a handy reference for designers/developers.

SimeVidas8y ago

What’s the use case for the CSS code? The `padding-top` value doesn’t account for the OS and browser’s chrome (status bar, URL bar, etc.), so the `.inner` element doesn’t fit into the viewport.

leddt8y ago

For responsive embeds I assume. Where the embedded ".inner" component scales it's height according to it's width.

ryanhefnerOP8y ago

Yeah, that was the intention. Good to use for placeholder styling until the image/video has loaded. And for things like responsive embeds/iframes.

SimeVidas8y ago

But why are the aspect ratios based on popular smartphone screens? Notice how on the website, you select a smartphone model, and then the button on the right shows CSS code for creating an aspect ratio that matches that smartphone’s screen. What’s the use case of having an element whose aspect ratio mimics that of popular smartphone screens?

ryanhefnerOP8y ago

On Product Hunt today, https://www.producthunt.com/posts/aspect-ratio!

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