Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding thumbnailing. What I want to achieve is that my MediaWiki installation produces thumbnails in a specified size.
What I did after reading through several help pages is this: --------------------------- # Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280, 1024 ) ); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600 ---------------------------
In my opinion this should guarantee that for every image uploaded, there is an 80, 250 and 390px sized thumbnail. In many cases this is true, but there are some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any user sets his/her preference to 100px. I don't mind so much extra sizes to be produced, but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded before the above mentioned setting was made? But how can I get the wiki to redo thumbnails in my desired size?
cheers, Bernhard
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding thumbnailing. What I want to achieve is that my MediaWiki installation produces thumbnails in a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280, 1024 ) ); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded, there is an 80, 250 and 390px sized thumbnail. In many cases this is true, but there are some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any user sets his/her preference to 100px. I don't mind so much extra sizes to be produced, but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded before the above mentioned setting was made? But how can I get the wiki to redo thumbnails in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
I should probably add to this, i believe (its been a while since i looked at the code and i didnt double check), that in default generate thumbs on parse mode, mediawiki will only generate the thumbs required at parse time given the user options set for that parse. So if you are using an image with default thumb size in a page, and there is a thumb size preference that nobody uses, then that thumb size will never be generated.
-- bawolff
On Friday, July 28, 2017, Brian Wolff bawolff@gmail.com wrote:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing. What I want to achieve is that my MediaWiki installation produces thumbnails in a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280,
1024 ) );
$wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded, there
is an 80, 250 and 390px sized thumbnail. In many cases this is true, but there are some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any user
sets his/her preference to 100px. I don't mind so much extra sizes to be produced, but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the above mentioned setting was made? But how can I get the wiki to redo thumbnails in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get deleted by MediaWiki? They probably get deleted once the image gets deleted. But other than that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding thumbnailing. What I want to achieve is that my MediaWiki installation produces thumbnails in a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280, 1024 ) ); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded, there is an 80, 250 and 390px sized thumbnail. In many cases this is true, but there are some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any user sets his/her preference to 100px. I don't mind so much extra sizes to be produced, but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded before the above mentioned setting was made? But how can I get the wiki to redo thumbnails in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge to the file description page)
-- bawolff
On Monday, July 31, 2017, Krabina Bernhard krabina@kdz.or.at wrote:
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get deleted
by MediaWiki?
They probably get deleted once the image gets deleted. But other than
that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing.
What I want to achieve is that my MediaWiki installation produces
thumbnails in
a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array(
1280, 1024 )
); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded,
there is an
80, 250 and 390px sized thumbnail. In many cases this is true, but
there are
some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any
user sets
his/her preference to 100px. I don't mind so much extra sizes to be
produced,
but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the
above mentioned setting was made? But how can I get the wiki to redo
thumbnails
in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
Building up on this information:
I have once tried to switch from "regular thumb handling" to "404 thumb handling" on an existing wiki and found that this does not work since as a result no thumbs were rendered at all. Starting with "404 thumb handling" on a fresh wiki however works fine. I have not dug into this more but may it be that all existing thumbs have to be deleted to clear the way for the new handling mode when switching the mode on wiki already in use?
Cheers Karsten
Am 31.07.2017 um 15:52 schrieb Brian Wolff:
Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge to the file description page)
-- bawolff
On Monday, July 31, 2017, Krabina Bernhard krabina@kdz.or.at wrote:
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get deleted
by MediaWiki?
They probably get deleted once the image gets deleted. But other than
that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing.
What I want to achieve is that my MediaWiki installation produces
thumbnails in
a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array(
1280, 1024 )
); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded,
there is an
80, 250 and 390px sized thumbnail. In many cases this is true, but
there are
some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any
user sets
his/her preference to 100px. I don't mind so much extra sizes to be
produced,
but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the
above mentioned setting was made? But how can I get the wiki to redo
thumbnails
in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
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Wouldn't deleting the thumb subfolder regenerate them on an as needed basis?
On Tue, Aug 1, 2017 at 10:51 AM, [[kgh]] mediawiki@kghoffmeyer.de wrote:
Building up on this information:
I have once tried to switch from "regular thumb handling" to "404 thumb handling" on an existing wiki and found that this does not work since as a result no thumbs were rendered at all. Starting with "404 thumb handling" on a fresh wiki however works fine. I have not dug into this more but may it be that all existing thumbs have to be deleted to clear the way for the new handling mode when switching the mode on wiki already in use?
Cheers Karsten
Am 31.07.2017 um 15:52 schrieb Brian Wolff:
Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge to the file description page)
-- bawolff
On Monday, July 31, 2017, Krabina Bernhard krabina@kdz.or.at wrote:
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get deleted
by MediaWiki?
They probably get deleted once the image gets deleted. But other than
that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing.
What I want to achieve is that my MediaWiki installation produces
thumbnails in
a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array(
1280, 1024 )
); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded,
there is an
80, 250 and 390px sized thumbnail. In many cases this is true, but
there are
some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any
user sets
his/her preference to 100px. I don't mind so much extra sizes to be
produced,
but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the
above mentioned setting was made? But how can I get the wiki to redo
thumbnails
in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
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On Tue, Aug 1, 2017 at 10:51 AM, [[kgh]] mediawiki@kghoffmeyer.de wrote:
Building up on this information:
I have once tried to switch from "regular thumb handling" to "404 thumb handling" on an existing wiki and found that this does not work since as a result no thumbs were rendered at all. Starting with "404 thumb handling" on a fresh wiki however works fine. I have not dug into this more but may it be that all existing thumbs have to be deleted to clear the way for the new handling mode when switching the mode on wiki already in use?
Cheers Karsten
I haven't tried it, but would think that you can switch to using a 404 handler. However, the documentation says that you should also set $wgGenerateThumbnailOnParse to false. [1]
[1] https://www.mediawiki.org/wiki/Manual:Thumb.php
Greg Rundlett https://QualityBox.us https://freephile.org
It should be fine to switch over an existing wiki, and ive done it before. I think its more likely something else was wrong, some config missing (if you had custom wgLocalFileRepos the config changes. If you have custom wgForeignFileRepos things may get more complicated. Older versions of mediawiki had an issue with wgUseInstantCommons being incompatible with 404 rendering, but that should be fixed now) or some weird incompatibility with something else.
I know you wouldnt have them anymore, but mediawiki can be configured to generate logs that can be used to debug this sort of thing, and going directly to the thumb file in 404 rendering mode can also give helpful error messages.
-- bawolff
On Tuesday, August 1, 2017, [[kgh]] mediawiki@kghoffmeyer.de wrote:
Building up on this information:
I have once tried to switch from "regular thumb handling" to "404 thumb handling" on an existing wiki and found that this does not work since as a result no thumbs were rendered at all. Starting with "404 thumb handling" on a fresh wiki however works fine. I have not dug into this more but may it be that all existing thumbs have to be deleted to clear the way for the new handling mode when switching the mode on wiki already in use?
Cheers Karsten
Am 31.07.2017 um 15:52 schrieb Brian Wolff:
Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge to
the
file description page)
-- bawolff
On Monday, July 31, 2017, Krabina Bernhard krabina@kdz.or.at wrote:
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get
deleted
by MediaWiki?
They probably get deleted once the image gets deleted. But other than
that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard krabina@kdz.or.at
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing.
What I want to achieve is that my MediaWiki installation produces
thumbnails in
a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array(
1280, 1024 )
); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded,
there is an
80, 250 and 390px sized thumbnail. In many cases this is true, but
there are
some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any
user sets
his/her preference to 100px. I don't mind so much extra sizes to be
produced,
but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the
above mentioned setting was made? But how can I get the wiki to redo
thumbnails
in my desired size?
cheers, Bernhard
MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
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MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
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Oops, all your mails went directly to the spam folder. Sorry for the belated reply and thank you for your suggestions and feedback.
I should definitively give it a shot again and in case of failure together with error logging. :) Fresh wikis are painless so I guess that I know how to set up a working handler.
I remember a 1.23 giving me pain with no thumbs rendered but this one was the source of a foreign file repo. So this may have been the reason. Moreover I remember other issues with file handling in that branch. Also there was a 1.27 with no thumbs rendered for the files uploaded before the switch but working for files uploaded after the switch. That's basically why I got the idea that existing thumbs will probably have to be cleared. That wiki is now on 1.29 and working cool though.
Cheers Karsten
Am 01.08.2017 um 20:12 schrieb Brian Wolff:
It should be fine to switch over an existing wiki, and ive done it before. I think its more likely something else was wrong, some config missing (if you had custom wgLocalFileRepos the config changes. If you have custom wgForeignFileRepos things may get more complicated. Older versions of mediawiki had an issue with wgUseInstantCommons being incompatible with 404 rendering, but that should be fixed now) or some weird incompatibility with something else.
I know you wouldnt have them anymore, but mediawiki can be configured to generate logs that can be used to debug this sort of thing, and going directly to the thumb file in 404 rendering mode can also give helpful error messages.
-- bawolff
On Tuesday, August 1, 2017, [[kgh]] <mediawiki@kghoffmeyer.de mailto:mediawiki@kghoffmeyer.de> wrote:
Building up on this information:
I have once tried to switch from "regular thumb handling" to "404 thumb handling" on an existing wiki and found that this does not work since as a result no thumbs were rendered at all. Starting with "404 thumb handling" on a fresh wiki however works fine. I have not dug into this more but may it be that all existing thumbs have to be deleted to clear the way for the new handling mode when switching the mode on wiki already in use?
Cheers Karsten
Am 31.07.2017 um 15:52 schrieb Brian Wolff:
Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge
to the
file description page)
-- bawolff
On Monday, July 31, 2017, Krabina Bernhard <krabina@kdz.or.at
mailto:krabina@kdz.or.at> wrote:
Dear all,
thank you for your help, it is much appreciated.
An additional question regarding thumbnailing: do thumbs ever get
deleted
by MediaWiki?
They probably get deleted once the image gets deleted. But other than
that, do all generated thumbnails exist as long as the image exists?
cheers, Bernhard
----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff
bawolff@gmail.com mailto:bawolff@gmail.com:
Hi,
MediaWiki will by default only create image thumbs for needed
sizes at
time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a
normal
page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb.
For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php
-- Brian
On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard
<krabina@kdz.or.at mailto:krabina@kdz.or.at>
wrote:
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding
thumbnailing.
What I want to achieve is that my MediaWiki installation produces
thumbnails in
a specified size.
What I did after reading through several help pages is this:
# Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array(
1280, 1024 )
); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600
In my opinion this should guarantee that for every image uploaded,
there is an
80, 250 and 390px sized thumbnail. In many cases this is true, but
there are
some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any
user sets
his/her preference to 100px. I don't mind so much extra sizes to be
produced,
but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded
before the
above mentioned setting was made? But how can I get the wiki to redo
thumbnails
in my desired size?
cheers, Bernhard
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Hi Bernhard,
I believe bawolff's explanations to use the "thumb.php" (plus the 404 handler) as an entrypoint is probably the best approach. If you still need for some reason those files to be always available on the disk, it should be easy to write a maintenance script that runs over all the files in your repo and creates the desired thumb sizes. It can be done with MediaWiki framework functions (`wfFindFile($title)->createThumb( $width, $height )`). This could also be done within the "UploadComplete" [1] hook.
[1] https://www.mediawiki.org/wiki/Manual:Hooks/UploadComplete
--
Robert
________________________________ Von: MediaWiki-l mediawiki-l-bounces@lists.wikimedia.org im Auftrag von Krabina Bernhard krabina@kdz.or.at Gesendet: Freitag, 28. Juli 2017 11:18 An: mediawiki-l@lists.wikimedia.org Betreff: [MediaWiki-l] Image thumbnailing in MediaWiki
Dear MediaWiki experts,
I cannot really figure out the behaviour of MediaWiki regarding thumbnailing. What I want to achieve is that my MediaWiki installation produces thumbnails in a specified size.
What I did after reading through several help pages is this: --------------------------- # Images und Thumbnails $wgThumbLimits = array( 80, 250, 390 ); $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250
$wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280, 1024 ) ); $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600 ---------------------------
In my opinion this should guarantee that for every image uploaded, there is an 80, 250 and 390px sized thumbnail. In many cases this is true, but there are some cases were I can find a 100px thumbnail, but no 80px thumbnail.
If I understand it correctly, this can perfectly be the case if any user sets his/her preference to 100px. I don't mind so much extra sizes to be produced, but I want to make sure that a 80px thumbnail is there.
Maybe in the cases where it is not present the images were uploaded before the above mentioned setting was made? But how can I get the wiki to redo thumbnails in my desired size?
cheers, Bernhard
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