ImageMagick no decode delegate

Imagemagick Problem Overview

I'm trying to convert an image with imagemagick, but I'm getting this error:

>convert: no decode delegate for this image format `//i.imgur.com/nTheJ.jpg' @ error/constitute.c/ReadImage/532.

I'm doing this:

convert http://i.imgur.com/nTheJ.jpg -resize 600×600 filarkiv/billeder/produkter/s236-085145.jpg

I have the following delegates:

>DELEGATES freetype jpeg jng mpeg png x11 xml zlib

Anyone knows what the problem is?

Imagemagick Solutions

Solution 1 - Imagemagick

I had this error when rendering an image using DragonFly in Rails. This happened after I upgraded to Lion (ImageMagick was installed using Brew).

I reinstalled ImageMagick, jpeg, libtiff and jasper (reinstalling ImageMagick wasn't enough by itself).

brew uninstall imagemagick jpeg libtiff jasper
brew install imagemagick

Prior to that, running

identify -list format

and jpeg wasn't in the list. After reinstalling the above packages jpeg appeared in the list.

Solution 2 - Imagemagick

for me:

 brew reinstall imagemagick --with-libtiff

saved the day when dealing with a similar problem, but for tiff files.

UPDATE: one year later and this remains the only way I can get tiff working properly in convert on MacOS X.

Solution 3 - Imagemagick

substitude the × in -resize 600×600 with a capital X and it should work.

-resize 600X600

Solution 4 - Imagemagick

on Ubuntu 16, I had to install the following first (this was not a dev machine but a server):

sudo apt-get install autoconf automake autotools-dev libtool pkg-config

then to enable the PNG and JPG delegates :

sudo apt-get install libpng12 libpng12-dev libjpeg libjpeg-dev

followed by

./configure

(Which should now show that the delegates are enabled)

and then rebuild (make clean && make then sudo make install)

Solution 5 - Imagemagick

I faced the same problem recently. After Googling for couple of hours, I found out that reason was a CONFLICT between php extentions Gmagick & Imagick. Commenting gmagick.so in php.ini fixed the problem. Hope this will save someone time :)

Solution 6 - Imagemagick

redhat4.8, If you install from source, may be can try: > yum remove libjpeg > > wget http://www.imagemagick.org/download/delegates/jpegsrc.v9a.tar.gz > > sudo tar xvf jpegsrc.v9a.tar.gz -C /usr/local/src/ > > cd /usr/local/src/jpeg-9a > > ./configure --enable-shared > > make > > sudo make install

than turn in ImageMagick > cd ImageMagick-6.9.6-4 > > ./configure > > sudo make install > > sudo ldconfig /usr/local/lib

Solution 7 - Imagemagick

I had similiar problem. I was missing delegates for JPEG, PNG :

apt install libjpeg-dev
apt install libpng-dev

cd ImageMagick-7.1.0-19/
./configure

Now check the output is jpeg=yes; png=yes

make
sudo make install

Now try convert or mogrify

mogrify -path "output/" -resize 1920X1920 some.jpeg

Solution 8 - Imagemagick

from Phillip Ingram somewhere on the interwebs:

in gentoo use

sudo EXTRA_ECONF="--with-png --with-jpeg" emerge imagemagick

This is slightly different than Jonathan Horseman's answer since it wasn't an error but rather a need to specify more during the installation.

But the identify command was very useful.

Hope this helps someone (and perhaps me in the future ;).

Solution 9 - Imagemagick

In my case, the solution was a matter of ending the command with *.{jpg,png} rather than *.

I believe the * was picking up / trying to convert hidden files.

Solution 10 - Imagemagick

I have encountered a similar problem with TIFF files on ImageMagick v7.0.4-5 on Windows 7.

If this question concerns a Windows OS, then the cause is that Windows can't find the Jpeg (in my case, TIFF) file library (DLL).

Cause

I had installed ImageMagick without adding it to the Windows $PATH.

Error message

This resulted in error

identify: unable to load module 'C:\Program Files\ImageMagick-7.0.4-Q16\modules\coders\IM_MOD_RL_TIFF_.dll':
The specified module could not be found.
 @ error/module.c/OpenModule/1279.
identify: no decode delegate for this image format `TIFF'
 @ error/constitute.c/ReadImage/509.

Solution

Re-install ImageMagick and do add it to the $PATH, so that it can find libtiff. Restart your command shell as well.
First cd into ImageMagick's install folder before executing it.

Solution 11 - Imagemagick

Another reason for this error to show up is when the file you're trying to convert has no extension.

This may happen, for example, in a Node.js application using multer with the default configuration.

Solution 12 - Imagemagick

i had the problem and i forgot put to obj downloaded photo against i put path.

file_get_contents($pathToPhoto)

maybe someone help :[

Content Type	Original Author	Original Content on Stackoverflow
Question	Trolley	View Question on Stackoverflow
Solution 1 - Imagemagick	Jonathon Horsman	View Answer on Stackoverflow
Solution 2 - Imagemagick	deepwinter	View Answer on Stackoverflow
Solution 3 - Imagemagick	tgfuellner	View Answer on Stackoverflow
Solution 4 - Imagemagick	mathieuc	View Answer on Stackoverflow
Solution 5 - Imagemagick	R Sun	View Answer on Stackoverflow
Solution 6 - Imagemagick	wawa	View Answer on Stackoverflow
Solution 7 - Imagemagick	John Tribe	View Answer on Stackoverflow
Solution 8 - Imagemagick	Gerard ONeill	View Answer on Stackoverflow
Solution 9 - Imagemagick	shaneparsons	View Answer on Stackoverflow
Solution 10 - Imagemagick	florisla	View Answer on Stackoverflow
Solution 11 - Imagemagick	Alexander Korostin	View Answer on Stackoverflow
Solution 12 - Imagemagick	Kamil Dąbrowski	View Answer on Stackoverflow