大约有 2,000 项符合查询结果（耗时：0.0279秒） [XML]
Convert RGBA PNG to RGB with PIL
...95/…). I had to convert the PNG to RGBA first and then slice it: alpha = img.split()[-1] then use that on the background mask.
– joehand
Nov 2 '12 at 0:56
...
Capture HTML Canvas as gif/jpg/png/pdf?
... has been revised:
var canvas = document.getElementById("mycanvas");
var img = canvas.toDataURL("image/png");
with the value in IMG you can write it out as a new Image like so:
document.write('<img src="'+img+'"/>');
...
How do I combine a background-image and CSS3 gradient on the same element?
...an use this:
background-color: #444; // fallback
background: url('PATH-TO-IMG') center center no-repeat; // fallback
background: url('PATH-TO-IMG') center center no-repeat, -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+
background: url('PATH-TO-IMG') center center no-repeat, -webkit...
CSS image resize percentage of itself?
I am trying to resize an img with a percentage of itself. For example, I just want to shrink the image by half by resizing it to 50%. But applying width: 50%; will resize the image to be 50% of the container element (the parent element which maybe the <body> for example).
...
HTML if image is not found
...
The best way to solve your problem:
<img id="currentPhoto" src="SomeImage.jpg" onerror="this.onerror=null; this.src='Default.jpg'" alt="" width="100" height="120">
onerror is a good thing for you :)
Just change the image file name and try yourself.
...
Programmatically change the src of an img tag
How can I change the src attribute of an img tag using javascript?
9 Answers
9
...
Detect when an image fails to load in Javascript
...ending on the server you are getting an image from. For example, sometimes imgur don't send an image that exists nor an 404 status and the error event is not triggered in this case.
– user3233318
Jun 4 '15 at 13:02
...
Get image data url in JavaScript?
I have a regular HTML page with some images (just regular <img /> HTML tags). I'd like to get their content, base64 encoded preferably, without the need to redownload the image (ie. it's already loaded by the browser, so now I want the content).
...
How to write a caption under an image?
...
Figure and Figcaption tags:
<figure>
<img src='image.jpg' alt='missing' />
<figcaption>Caption goes here</figcaption>
</figure>
Gotta love HTML5.
See sample
#container {
text-align: center;
}
a, figure {
display: inl...
Resize image in the wiki of GitHub using Markdown
...hub.com/favicon.ico)
HTML code for sizing images (internal/external):
<img src="https://github.com/favicon.ico" width="48">
Example:
Old Answer:
This should work:
[[ http://url.to/image.png | height = 100px ]]
Source: https://guides.github.com/features/mastering-markdown/
...