How to edit your Blogger template

This article is about how to edit Blogger templates, using either the old or new interfaces.

It supports many other articles on this site, which suggest specific template changes to solve particular problems. 

Previously, I've looked at whether it's a good idea to edit your Blogger template or not.

For many people, editing the template is acceptable, because it is the only way to do what they want (remove the attribution, show a gadget on the homeppage only, add a Facebook like button to posts, etc).


In general, the process to follow is:

• Open the template-editor
• Make a back-up copy of the template, as it is now
• Make the change
• Check that it works, and if not, go back to the previous template.

The new Blogger interface has added a couple of extra "twitches" to these steps, though.   Read on to learn more:

How to open Blogger's template editor, for dynamic template blogs:

If your blog has a dynamic template, then use the see-all-posts icon for the blog to get into it the blog-options screen for the blog that you want to edit.

When you are in the see-all-posts mode, the the address bar in your browser is like this:

http://www.blogger.com/blogger.g?blogID=5381944372768369653#allposts/postNum=0

Copy your blogID number - that is, the digits between blogID= and #allposts (it's bold in the example above)

Go go

http://www.blogger.com/html?blogID=NNNNNNNNNNNNNNNNNNN

where you have replaced NNN... with your blog-ID


Note:  the last time I tried this, it automatically opened in the old interface's template editor.   As always, make sure you take a backup copy of the template - see instructions below before changing this.

How to open Blogger's template editor, for non-dynamic templates:

Using pre-Sept-2011 Blogger, AKA the old  UI / version of Blogger :

• Go to the Design > Edit HTML tab

Using post-Sept-2011 Blogger, AKA the new  UI / version of Blogger :

• Go to the Design tab
• Click Edit HTML
• Click Proceed
  
  
• Check that you can see the Save template button at the very bottom of the editing window.
  If you are using a very small screen, you may need to make he font smaller (ctrl/- in many browsers)..    

First, make a backup copy of your current template:

It's tempting to skip this if you're only making a small change. I even skip it myself sometimes. And it's not needed if this is the first time you've ever customised your template - because you can recover from problems by just reinstalling the standard template.

But if you would be upset to lose any template changes you made earlier, or if the change you are making now is not minor, then I strongly recommend making a copy before you start, just in case.  To do this

• Click the Backup / Restore button near the top right of the dashboard (as shown below)
• Click the Download Full Template button, and then wait while the file downloads.
• After the download has finished, find the place where your computer puts downloaded files.
• Find the file that was just created,
• Rename it to something sensible
   (eg MyBlog template backup before change 31 Jan 2012.xml)
• Move the file to somewhere safe: usually somewhere on your computer is fine - or you make like to upload it to somewhere like Google Docs, to be absolutely certain that it won't get lost.

Then make the change to your template:

• Check whether the change you are making needs the Expand Widgets checkbox off or on, and put it to the right state.
  (If the article telling you want to change doesn't mention it, then assume it should be off.)

• Find the code you need to change:
  (hint: use your browser's find-function, eg Ctrl/f in Chrome and Firefox, to locate the code you're looking for - it's faster and more accurate than scanning manually)

• Make the change (this article doesn't go into the principles of template design, there are plenty of other articles and websites about that: I'm assuming that you know what you need to do).

• Click the Preview button:

If Blogger can make sense of the change you made, then a new window or tab opens, showing a view that looks like your blog's homepage. It's not a real copy of your blog (the links won't work, the spacing might not be quite the same, and it will have the word "Preview" diagonally in the top left corner).

Do a quick check that the screen looks right - for some changes you even be able to tell if the change has been successful just from this preview screen.

However:  If the new window/tab shows an error message like

Your template could not be parsed as it is not well-formed. Please make sure that all XML elements are closed properly. <br/> XML error message: The element type "div" must be terminated by the matching end-tag "</div>".Error 500

or

Your template could not be parsed as it is not well-formed. Please make sure that all XML elements are closed properly. <br/> XML error message: Element type "b:widget" must be followed by either attribute specifications, ">" or "/>".

then Blogger has not been able to understand the change you made. Sometimes the error message gives a clue about what's wrong, although it can be misleading.   Check that you made the change correctly - fix any errors and click Preview again.  If it still doesn't work, ask for help from the place that suggested the change you are making.

Once you are happy that the preview screen looks OK, click the Save or Save templatebutton.

How to test your template change:

Some template changes can be checked very easily, sometimes from the preview screen.

But if your change isn't visible on the front screen, you must check it after you have applied it. What to verify depends on your template type, what the change was, and what other features (eg the page-gadget as a menu, the archive widget, ) your blog uses. You need to decide what to test, based on all of these.

At least, I alwways click on and check on these things when I've made a major template change:

1. the home page
2. the items in the menu bar
3. a label value
4. an archive widget entry
5. custom-search-engine results
6. comments

And if I'm being particularly reader-focussed, I'll also check these things in more than one browser:   usually in the current version of Internet Explorer, Firefox and Chrome.

Fixing Problems:

If you find that the template change has caused problems, then ou have have a choice to make:

Can you and your readers live with the problems on your blog for "a while", while you look for other solutions? 

Or 

Do you need to remove the change right now, so visitors can use your blog as it was while you solve the issues.

There is no right answer to this question:   It's a personal decision, based on the blog, and your readers. 

But if you do need to remove the template change, here's how to do it:

• Click the Backup / Restore button near the top right of the dashboard
• Click Choose File and find the file that you downloaded earlier
• Click Upload.

It is best to restore your template before you have changed any gadgets.  If you get a message about widgets being missing, then it means that the gadgets associated with your blog are not the ones referred to in the template.   If this happens, you need to decide whether to deep or delete any "orphaned" ones, and may need to check their settings again.

Making complicated changes:

If you your template may need a lot of "surgery" while you figure out how to make a change, then it may be a good idea to build a private test-blog to do the work in, and only copy the contents into your "real" blog template when you are certain that you've got it correct (or correct-enough).

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