Do not put spaces between parameters. The other parameters are optional and can be placed in any order. Some infoboxes do not require the brackets. Keep parameters in lower case. The other parameters are:
Type
'thumb' / 'thumbnail' or 'frame'. This causes image to be displayed with specific formatting. "thumb" is normally preferred.
Location
'right', 'left', 'center' or 'none'. Determines placement of the image on the page. "Left" or "right" is the norm, but large panoramas or timelines can be displayed in the center.
Size
{width}px or {width}x{height}px (e.g. 50x40px, would limit width to 50 pixels and height to 40 pixels). Normally only one variable is used. Use common sense when determining the sizes; you can use the "Show preview" button if you need to. If thumb or thumbnail is chosen, size should normally be left out, so that the size defaults to the size set in a user's preferences.
alt=
(keep it lower case). This is the "alternate image" parameter used to describe the image for screenreaders or for people with low-vision. It should be more descriptive than the caption alone. Do not use this for another copy of the caption or of the article title, as the reader will already be aware of these.
Caption
Any element which cannot be identified as one of the above is automatically treated as caption text. It is traditional to put this last. The caption should identify what the image is, and ideally be a complete sentence that adds to the article by pointing out something a casual reader would not have noticed otherwise, or add information the pertains to the image. Full sentence or multi fragment captions require full stop punctuation.
If you have created a picture that is not already in Wikipedia's image collection on the Commons that you want to include in an article, you will need to upload it first. Bonus tip: Similar formatting is used to insert basic audio or basic video clips into articles.
To add this auto-updating template to your user page, use {{tip of the day}}
Barnstars
You have earned this 1956 Hungarian Revolution Barnstar
István (talk) 05:27, 24 January 2010 (UTC)
The Understanding Barnstar
Dear Elen of the Roads, thank you very much for your kindness and your understanding! It really helped me to endure the block. --Mbz1 (talk) 15:38, 24 February 2010 (UTC)
The Original Barnstar
For bringing sense and sanity to WP:ANI,and hitting the nail right right on the head. Dlohcierekim 20:33, 14 April 2010 (UTC)
The Copyright Cleanup Barnstar
For your invaluable contributions to evaluating and addressing copyright concerns in this CCI. Moonriddengirl(talk) 17:36, 7 July 2010 (UTC)
The Guidance Barnstar
He's a difficult case with great upside potential. Your mentoring is appreciated. Mike Cline (talk) 00:42, 5 October 2010 (UTC)
With appreciation to your thoughtful and sensitive navigation of the ship in the Monty Hall case. Mathematicians (of which I used to be one) aren't easy to communicate with, and mathematicians going mathematical and losing everyone else (as well as each other) was one of the key problems here. I think the pushback on some of your original proposals was sound, but regardless I deeply appreciated the combination of pragmatism, challenging questions where you perceived a real issue, and adaptability in the discussion on the proposed decision page, to get around the sticky points in #11 and reach a solution that works for (nearly) everyone. Martinp (talk) 07:33, 23 March 2011 (UTC)
The Admin's Barnstar
For the wise closure of a very long discussion on a difficult user (which shall remain unnamed here). FuFoFuEd (talk) 09:43, 27 August 2011 (UTC)
The Defender of the Wiki Barnstar
For dealing with User:J3mm0 in the decisive fashion you did. Sometimes the line between nasty but sane, and just pure crazy is very bright... Cerejota (talk) 07:44, 3 September 2011 (UTC)
The Admin's Barnstar
Thanks for such a quick response in solving the problematic vandal IP I reported earlier today!
Your work is greatly appreciated by Wikipedia editors. Charles Dayton(Talk) 18:53, 25 January 2012 (UTC)
The Understanding Barnstar
To a woman of character:
"Any fool can criticize, condemn, and complain but it takes character and self control to be understanding and forgiving."
Thank you very much for your kindness and your understanding and simply being here on Wikipedia.
