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Recommendation for compressing JPG files with ImageMagick
I want to compress a JPG image file with ImageMagick but can't get much difference in size. By default the output size is bigger than the input. I don't know why, but after adding some +profile options and setting down the quality I can get an smaller size but still similar to original.
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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...多，下面总结应用特点支持自定义Profile，可以收发任意格式的数据，如01和00支持自定义设备，支持任意设备的连接和通信，例如智能蓝牙插座等。
提示：低功耗蓝牙的Profile均基于GATT（通用属性规范，后面会详解）之上，如H...
Using curl to upload POST data with files
...filecomment=This is an image file" \
-F "image=@/home/user1/Desktop/test.jpg" \
localhost/uploader.php
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Change the image source on rollover using jQuery
...ght: 200px; /* height of image */
background-image: url(/path/to/image.jpg);
}
#element:hover {
background-image: url(/path/to/other_image.jpg);
}
There's a longer description here
Even better, however, is to use sprites: simple-css-image-rollover
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pinterest api documentation [closed]
...a-cache-ak0.pinimg.com/custom_covers/216x146/155303955839058075_1385935738.jpg"
},
"boardThumbs": [
{
"alt": "",
"src": "http://media-cache-ec0.pinimg.com/45x45/eb/90/3d/eb903ddac82981f34f2071753ec2d9ac.jpg"
},
{
"alt"...
Refresh image with a new one at the same url
...achebreaker at the end of the url:
newImage.src = "http://localhost/image.jpg?" + new Date().getTime();
This will append the current timestamp automatically when you are creating the image, and it will make the browser look again for the image instead of retrieving the one in the cache.
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Using regular expressions to parse HTML: why not?
...ract URLs from
<img> tags.
<img src="http://example.com/whatever.jpg">
So you write a regex like this in Perl:
if ( $html =~ /<img src="(.+)"/ ) {
$url = $1;
}
In this case, $url will indeed contain
http://example.com/whatever.jpg. But what happens when
you start getting HT...
How to use find command to find all files with extensions from list?
I need to find all image files from directory (gif, png, jpg, jpeg).
9 Answers
9
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Renaming files in a folder to sequential numbers
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Try to use a loop, let, and printf for the padding:
a=1
for i in *.jpg; do
new=$(printf "%04d.jpg" "$a") #04 pad to length of 4
mv -i -- "$i" "$new"
let a=a+1
done
using the -i flag prevents automatically overwriting existing files.
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Simplest way to serve static data from outside the application server in a Java web application
... a specific file from under tmp works: http://localhost:8080/images/Tulips.jpg is OK
– ACV
Sep 12 '15 at 16:55
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