User talk:Trev M

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Custom thumbnails?[edit]


Hi, is it possible to create a custom thumbnail for an image that will then be served without further reprocessing, and still link to the main image? The standard thumbnail of this <File:Concorde.planview.arp.jpg> as it appears here W:Concorde is being made a right pigs-ear of due to its sharp edges and plain background.

I also ended up with two identical copies of the file in question (same date), as I thought an upload had stalled but it hadn't. Perhaps someone with Admin privs could delete it, save confusion.

Thanks, Trev M 19:32, 14 March 2010 (UTC)

Yes. See w:Wikipedia:Extended image_syntax#Link. For example Loxoceles reclusa iconized thread 48.png should link to the description page of the original image. Another example: Loxoceles reclusa iconized thread 48.png should link directly to a specific uploaded image version. Works in both Commons and Wikipedia. -84user (talk) 16:22, 16 March 2010 (UTC)
Thanks. However, seems like it's necessary to get further under the bonnet (hood). The following posted on the help desk: I prepared a clean, custom thumbnail 300x229 - same size as specified at W:Concorde - and uploaded it to File:300px_Concorde.planview.arp.q8.jpg. The file size is 14 kB, which gives a presentable, fringe-free rendering on my browsers. However, wikimedia is not serving it without further reprocessing - not even to the file viewing window. So I haven't altered the wikipedia thumbnail source yet, as the file source isn't even displayed correctly. I've set my own appearance prefs all over the place and it makes no difference - we get it at 3 929 Bytes, complete with decorative fringes.
Come on guys, you can spare 10k of bandwidth to make this unique thumbnail worth looking at, surely? Where's the disable re-rendering option for specific images?? Trev M 21:00, 16 March 2010 (UTC)

From Commons:Help_desk: Commons:Help_desk#Serving_a_custom_thumbnail_without_re-rendering_at_lower_jpeg_quality

So, my view of wikipedia - images at any rate - are being supplied by a diffrent server. The question is whether that server is a third party server, or something within the control of the wikimedia foundation.

Using I get:

The ip address for is:

I do a traceroute for I get:

traceroute to (, 64 hops max, 40 byte packets
1 (  557.896 ms  448.579 ms  353.681 ms
2  host203 (  307.575 ms  477.788 ms  363.289 ms
3  host203 (  363.313 ms  360.730 ms  352.515 ms
4  * * *
5 (  842.179 ms  380.017 ms  357.610 ms
6 (  491.206 ms  507.212 ms  461.831 ms
7 (  442.048 ms  411.472 ms  465.575 ms
8 (  530.301 ms  467.154 ms  469.933 ms
9 (  766.130 ms  423.656 ms  453.626 ms
10 (  405.026 ms  419.098 ms  464.283 ms
11 (  469.869 ms  441.851 ms  458.122 ms
12 (  428.567 ms  400.279 ms  483.952 ms

I do a traceroute for "" I get:

traceroute to (, 64 hops max, 40 byte packets
1 (  611.954 ms  485.713 ms  376.071 ms
2  host203 (  356.512 ms  373.278 ms  368.852 ms
3  host203 (  339.255 ms  350.008 ms  340.567 ms
4  * * *
5 (  511.626 ms  427.479 ms  455.670 ms
6 (  430.680 ms  360.503 ms  348.771 ms
7 (  338.116 ms  350.487 ms  337.820 ms
8 (  352.250 ms  455.373 ms  449.951 ms
9 (  337.532 ms  452.064 ms  341.145 ms
10 (  435.387 ms  332.302 ms  333.262 ms

I go to I get a squishy 4k version of the 14k file, same pixel dimensions.

I go to in my browser and I get:

The requested URL could not be retrieved
While trying to retrieve the URL:
The following error was encountered:
   * Access Denied.
     Access control configuration prevents your request from being allowed at this time. 
Please contact your service provider if you feel this is incorrect. 
Your cache administrator is nobody.
Generated Thu, 18 Mar 2010 01:59:40 GMT by (squid/2.7.STABLE7)

Comment? Trev M 02:29, 18 March 2010 (UTC)

That is strange. Your traceroute for shows that it goes through, which appears to be some server belonging to a network in Phoenix, Arizona. The target (, however, is the Wikimedia mirrors in Amsterdam. If you're in the U.S., you shouldn't go to the KNAMS servers in Europe at all; you should be served by the PMTPA servers in Tampa, Florida. Somehow, it looks as if some DNS cache along the way has the wrong settings... You don't have an entry for in your /etc/hosts file, do you?
That still doesn't explain why you get served a 4kB version of the file. Perhaps there is some intermediary caching proxy along your route? Or the ESAMS server sees that you're coming from far away and decides to downgrade the file? (Don't know if they do that.)
BTW, I get the 14793 bytes version from but then my traceroute to the upload server was a surprise:
$ traceroute
traceroute to (, 64 hops max, 52 byte packets
 1 (  1.687 ms  1.393 ms  1.402 ms
I would have expected to see at least some intermediary hops. (I'm behind a firewall, and not exactly in the vicinity of Amsterdam either.)
The "access denied" error seems to be a deliberate server configuration; apparently these servers are accessible through http only under the name "". (I get those errors, too, if I try IP numbers or the esams/pmpta names.)
Anyway, I would suggest that you try to contact one of the system administrators. Maybe they can figure out what might be going on. Easiest way might be through IRC #wikimedia-tech. Lupo 08:13, 18 March 2010 (UTC)
This problems turns out to be my own wireless ISP (Vodafone). It's actually quite a useful feature for getting a faster page loads if one is indifferent to the image quality. If anyone comes here as a result of searching the same issue, there's a couple of workarounds on Macs: for individual pages, Apple-shift-R or Apple-shift+browser_reload_button; for ongoing bypassing of the compression feature, try installing this donate-ware app: (108kB).

Thanks to all who helped me get a handle on this one!

That still leaves the issue as to why Lupo was getting stuff sent over from Amsterdam. I think we can live with that on.... (I'm in UK in case you haven't twigged yet. I'm just nocturnal! ;-> Trev M 01:20, 22 March 2010 (UTC)

If you're in the UK, I don't understand why your traceroutes show them going through a server in Phoenix, Arizona, U.S. Lupo 07:29, 22 March 2010 (UTC)
after Pheonix, it's GBLX.NET, washington, passing it back to leasenet, amsterdam.
While you're here, as you have admin privs, could you clear up the redundant images at File:Concorde.planview.arp.jpg. The version 18:20, 14 March 2010 is exactly the same as the one before it 18:17, 14 March 2010, so it and the revert from it: 18:23, 14 March 2010 can both go, they illustrate nothing but my struggle with slow uploads and are a potentiall source of confusion to users of the file. To clarify:

There should be 3 versions of the image, and ideally, no more, yet:

  • the clean-up by me User:Trev M 18:17, 14 March 2010 (should be the current version)
  • the clean-up by Arpingstone 13:34, 14 October 2007
  • the original 13:42, 14 May 2005 uploaded by User:Arpingstone

I'll evetually get around to adding the details of the changes I made to the image to the redlinked talk page ref I added.

Finally, what would be the best way to add or refer *to* the thumbnail I made at File:300px_Concorde.planview.arp.q8.jpg from the main file? I don't see any mention of it there.

Thanks for your help, Trev M 13:28, 22 March 2010 (UTC)


Welcome to Wikimedia Commons, Trev M!
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Tip: Categorizing images[edit]

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Hello, Trev M!

Tip: Add categories to your images

Thanks a lot for contributing to the Wikimedia Commons! Here's a tip to make your uploads more useful: Why not add some categories to describe them? This will help more people to find and use them.

Here's how:

1) If you're using the UploadWizard, you can add categories to each file when you describe it. Just click "more options" for the file and add the categories which make sense:


2) You can also pick the file from your list of uploads, edit the file description page, and manually add the category code at the end of the page.

[[Category:Category name]]

For example, if you are uploading a diagram showing the orbits of comets, you add the following code:

[[Category:Astronomical diagrams]]

This will make the diagram show up in the categories "Astronomical diagrams" and "Comets".

When picking categories, try to choose a specific category ("Astronomical diagrams") over a generic one ("Illustrations"). Pro-tip: The CommonSense tool can help you find the best category for your image.

Thanks again for your uploads! More information about categorization can be found in Commons:Categories, and don't hesitate to leave a note on the help desk.

CategorizationBot (talk) 10:59, 19 February 2010 (UTC)

TUSC token 4c4ffd84f859cdf3050cd321d6417e67[edit]

I am now proud owner of a TUSC account!


Got a query about one of my images?[edit]

{{Autotranslate|1=File:Malasana.jpg|base=Image permission/heading}}<br> {{Autotranslate|1=File:Malasana.jpg|base=Image permission}} 05:58, 22 July 2010 (UTC)

Just to let you know that media on this server placed by this user are always placed with permission or of my own creation. This user is also of the kind that responds well to a few friendly words rather than a general purpose notices. Please remind me if I've forgotten to post the evidence. You will notice from my User page I can understand several european languages. Trev M  ~ 13:03, 22 July 2010 (UTC)

File:Watchlist whitspace screenshot.png[edit]

Hi there. I've changed licensing to better reflect the screenshot's contents, and changed the file's category from Screenshots to Screenshots of Mozilla Firefox 3.6. Then I modified your upload, so that its contents would be in accordance with Commons:Screenshots#Software. Check image history for a bit more. In all fairness, screenshots of free/open source software in a proprietary OS are tricky, because visuals and elements of proprietary operating systems tend to be rather sticky. Oh well :> -Mardus (talk) 00:20, 14 March 2012 (UTC)