问题
I want to convert from base line Jpeg image to progressive Jpeg image.
There are 10,000 images stored in my Disk.
I tried one website but it is changing one at time.http://www.imgonline.com.ua/eng/compress-image.php
But I want to convert them in bulk.
Is there any online tools or some programming techniques?
Then, let me know.
Thanks.
回答1:
You can do that with ImageMagick which is installed on most Linux distros and is available for OSX and Windows.
Make a copy before experimenting on a small batch of images!
You can do a whole directory full of JPEGs like this:
mogrify -interlace plane *.jpg
Or, if you want to do one at a time:
convert input.jpg -interlace plane output.jpg
Or, if you want to do a whole directory and every subdirectory on Linux/OSX:
find . -iname \*.jpg -exec convert {} -interlace plane {} \;
Or, you can use GNU Parallel on Linux/OSX if you want to get the job done faster. Please ask if that is relevant.
You can also do it with jpegtran which is miles easier to install:
jpegtran -copy none -progressive input.jpg output.jpg
回答2:
Windows user here - I like to use a tool called irfanview which I have been using over 10 years now, it's a 3MB freeware and can do many sorts of (batch) modifications on images, some in lossless quality. powerful stuff.
I also use & recommend xnview which is available for MAC also and also has a command-line tool.
Simply view the JPEG you wish to convert and choose "save as" from the top left "file" menu and save using "progressive".
来源：https://stackoverflow.com/questions/40127266/change-jpeg-into-progressive-jpeg-image