This might not strictly be a coding question, but its related so i'll post it up anyway.
I built a website a year ago and never had any problems. I've recently moved to Mac and I've started noticing small colour related issues between my Macbook and my Pro.
In the header there's a background image aligned top right. The background colour of the header matches the image to show a smooth fade from image to background colour. On my Mac Pro it looks fine, on my Macbook Air the image is slightly darker.
I've attached a screenshot of the background image below. You should see a quite obvious swap from background color to background image.
In photoshop the Hex of the background color and image fade are exactly the same.
Does anyone know why this this happens?
Thanks!
http://i.stack.imgur.com/xZJ6B.png
This is likely to be more to do with your screen rather than a coding issue. You will find that all screens display images slightly differently. In fact, the image you have posted will look different to me now, than it does on either of your machines. Often the difference is slight. This can be to do with different display technologies (LCD, CRT etc) or just the slight differences in manufacture.
Related
I have web App where a video is being played, the video and the web page have being set to the same background color however the video background appears different on different machines same browser. What I want to achieve is to have a video of a spinning triangle on a grey background color similar to the web page background color.This what I get on different machines instead from hp Probook 445 G7 from hp elitbook 8470. The images are from the same web App but the firsr image has a darker video background unlike the second one. What could be the cause and how to fix it.
Thanks
I've tried to solve a similar issue without success.
Went as far as saving out a transparent background in video which did not turn out to be a viable solution.
My thought is the white balance on your computers change the light gray/white color values slightly.
I've also noticed the exact same hex or color values exporting slightly different in video than with svg or png backgrounds. I've battled that by using a gradient of a background to soften the edges so it appears seamless.
On Windows, and to a certain degree also on Mac OS, with different browsers (Firefox, Chrome, Safari), our menu bar has rather pixelated/blurry font-rendering. This is on an ASP.NET Core 2.1 site that uses Bootstrap 4.1.3 but it's easy enough to reproduce with just simple HTML: https://jsfiddle.net/2tgc9r84/
<html>
<body style="background-color:#e72c87;">
<p style="font-size:20pt;">
This is some text that looks terrible.
</p>
</body>
</html>
Interestingly, the same font renders just fine in other areas of the site. I have noticed this on a 4K monitor that has 150% scaling activated but the issue also shows up with 100%. I have also tried this with different fonts, so apparently it's not an issue with the font, either.
Originally I thought this was an issue with transparency or transformations but finally, I tried simply changing the background color - and it turns out this blurriness is very obvious with red and dark blue (and of course, combinations of those, like magenta), and pretty much invisible with most other colors. Also, by changing the main background color, I can reproduce the issue for the other areas.
You can directly have a look at the site where this occurs here: https://beat-the-rhythm-vr.com/Home/Social (the navigation with the blurry text shows up after accepting the cookies).
Here's an image that shows the effect with different backgrounds, and also rendered on Mac OS (the Mac OS screenshots appear smaller in the image):
As far as I can tell, this does not happen at all on iOS. On the Mac, I don't quite see the issue on the screen but it does become obvious when making a screenshot. This could, however, also be an artifact due to scaling on the screenshot.
This is what it looks like on iOS (I get the same blurriness on Windows when making the Window small enough to get the same layout as on mobile, so that's also not the issue causing this / fixing this):
The obvious question: Is there any way to fix this, and if so, how?
EDIT: This is in addition to the comment on Porter's answer (I can't add screenshots in comments, so I'm posting this here):
EDIT 2: While this article is about a slightly different issue, my guess is that what I'm seeing is really just a limitation of ClearType that is related to what the article outlines: Color-aware ClearType requires access to fixed background pixels, which is a problem if you don't know what the background pixels are, or if they aren't fixed
ClearType apparently doesn't work when the background color isn't known, and from what I'm seeing, it seems to be designed primarily for black text on white backgrounds, also works well with light colors on dark backgrounds but not really so much for red/blue/magenta backgrounds (and any font-color).
I am unable to reproduce this on a 1080p or 4K display, with either mobile or web view on Firefox and Chrome. Fonts do tend to blend with the background color, so not every pixel of the font is going to be the same color; It'll blend on the edges. The smaller the font, the less pixels it has to work with for blending. If you use a larger font, does the same problem occur?
I have a logo with a blue background, I've picked the colour via Chrome inspector (matches Firefox colour picker as well), yet on mobile the logo stands out on the background.
What's going on/how can I prevent this?
Why you see another color on another display?
That logo has at least 5 colors in the background. That's the reason you can not match it.
Your monitor and mobile displays are not accurate, and it seems your contrast and brightness of the screen are not correct. In the professional photography and video editing, they call it color blind.
That's the reason professional designers do not use consumer monitors.
If you are a designer you need to have color accurate monitor and you need to calibrate it.
If you want to keep working on the current monitor at least change your monitor brightness, contrast and color settings, close to the natural settings.
What is the software solution?
Get the logo in SVG, PSD or PNG file from the designer. SVG files are better because they are vector files that you can open it with free software like Inkscape. Change whatever you like and export it to the PNG.
If your logo is a text like what you have here, Search font by image and recreate it with Inkscape. The logo you mentioned here seems to be two fonts. Clinica Pro and Sixta. and both of them are not free font.
You can remove the background using Gimp, Layer > Color to Transparency > Color to Alpha, and select background color.
Useful links:
Changing Background Color
Making the background of an image transparent in Gimp
Anyway, I did remove the background from that logo for you (Transparent Background):
I have a website I have just built. Everything looks reasonable in Mac browsers, but in windows browsers such as IE there seems to be some rendering problems in terms of very thin sketchy white lines in between where the main header image butts joins the surrounding background image, and also between the background image and the surrounding background colour. The images were created in photoshop. I'm probably not explaining it very well, but please take a look at the site. The link is below. Thankyou
http://www.eve-tattoo.com/index.htm
These are img artifacts. Here's the fixed jpg: http://i.imgur.com/O6rtiZ2.jpg
I have a website where the background has a light gradient (light gray from top to white on the bottom). When I place an image with a transparent background on the website, the background of the image picks the top color of the gradient. So instead of the image's background appearing to be a gradient as well and blending in with the site, the image's background color is just light gray.
I'm not sure if this is the way it's suppose to be (due to the way transparency works on websites). But I was wondering if anyone could provide a workaround
First of all welcome to StackOverflow :)
It depends. First of all, your website will be rendered differently on different browsers, and that's of vital importance to you, because unless you test it on different browsers, you can't be sure what some users will see.
If you've seen a partially transparent PNG that instead of transparency shows a grey background, chances are you're using Internet Explorer 6, a very old browser that you really shouldn't use. It's the one with the blue E, that E stands for Evil. Run.
On a more serious note, having a link to check would help, or a screenshot, because it's hard to tell just by guessing. PNGs should render fine against any background.