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I was wondering if it is possible to post a comment with an image.

Recently, during a question about data-visualization in Cross Validated, there was a controversy about using one type of chart for another.

I had posted a question about pie-charts, after reading some references I decided to build an example and clarify the point of using waffle-chart vs pie-chart. In a way, my example was not an answer it was more properly a comment on waffle-charts. But it seems to be impossible to post a comment with an image (Maybe, there is a way but I can't figure out how).

I don't know if it is relevant to post images in comments in other SO sites. So, if there is no way to post images in comments... why not making it possible? And if there is a way to post an image with a comment, how I can do it?

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Well, you can just use and upload the images manually then post a link to it in the comments, or if you find the discussion dragging out too long use chat instead. Otherwise, no, its not possible – Yi Jiang Mar 31 '11 at 17:05
I'd rather use the Markdown editor to automatically upload images to the SE-provided Pro account, @Yi, and then copy the URL into the comment. That ensures the image won't be deleted after some time. – Arjan Mar 31 '11 at 17:10
@Yi Jiang and @Arjan, thanks for your comments. I found them very useful! That seems to solve my problem. – deps_stats Mar 31 '11 at 18:26
Why the downvotes? This is a support question not a feature-request. – Andreas Bonini Mar 31 '11 at 19:20

You can't (see How do comments work?). The only formatting allowed in comments is things that change a single line (bold, code, etc.). Things that take up multiple lines aren't available, because comments don't span blocks like posts do. Along the same thinking, comments have a fairly low character limit. All of this serves to keep comments compact; adding images lets you make huge comments, and posts can have dozens or hundreds of comments:

Screenshot of the horror

If you really need an image, just link to it in the comment and people can click through

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Also, images would allow for HUGE text! – Arjan Mar 31 '11 at 17:12
+1 for hypothetically showing the images in comments ;) – Sachin Shanbhag Mar 31 '11 at 17:12
But who would put unicorns in the comments?? who would do something like that? – Trufa Mar 31 '11 at 17:30
Feature request right now – Pëkka Mar 31 '11 at 17:31
@Pekka Granted. Only for unicorns. – Dr. belisarius Mar 31 '11 at 18:22
@Arjan – jjnguy Mar 31 '11 at 19:23
@jjnguy… – Michael Mrozek Mar 31 '11 at 19:33
@Michael, haha. Great pic. – jjnguy Mar 31 '11 at 20:03
the unicorn just made my day, lol... – Sp0T Dec 7 '13 at 4:28
I thought that Stackexchange discourages the use of links to externally saved files? – Karlo Jan 19 at 13:29

A work around is to start a new answer or question, use the image upload button to get the images into the stakcoverflow imgur account, then take the links and link to the images from your comments. Discard the answer or question you started.

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That CAN'T be allowed! But I love it. Can you show me a link to where you've done this or seen this done? – alex gray Mar 19 '13 at 6:10
I think that's exactly what was done under my answer, by Fibbles, right here:…. It worked great, so I think it absolutely should be allowed. Him doing that was very helpful for me, and then I went ahead and added his image into my answer. – Gabriel Staples Sep 11 '15 at 19:42

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