How to Add Images to ProBoards Signatures

Upload the image to be placed in your ProBoards signature to an image hosting site such as Photobucket, or your own website if you have the space available. Once you have the image uploaded, make a note of the address that links directly to the image by right-clicking on the image and selecting “Copy Image Address.” This saves a copy of the image location, known as a URL, to the clipboard.
Browse to the ProBoards account where you want to put the image into your signature. Log in to your account if you are not already logged in, and select the 'Profile' link to access your profile for this account. Click “Add Signature” and select the “Add Signature to All Posts” option. This will ensure the image you add to your signature is automatically added to the end of all your posts.
Click on the text box for your signature. Enter the opening tag for the image code, '[img]' (without quotes), which tells the software that you want it to load an image. Right-click after the closing square bracket and select “Paste,” or press 'Ctrl+V' to paste the URL of your image. Enter the tag '[/img' (without quotes) to close the image command and click “Save Changes.”
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How to Put GIFs on Your Tumblr Sidebar

Upload your GIF to an image host. You can upload it to a Tumblr post, your own Web hosting server or an image-hosting service such as Imgur, TinyPic or Photobucket (links in Resources).
Copy your GIF's URL to your computer's clipboard. Most image-hosting services offer several URL options when you upload a photo; typically, you should copy the link labeled 'For Email' or 'For Layouts.'
Log in to your Tumblr account, click the gear icon at the top of the page and then click the name of the blog whose layout you want to customize.
Click the 'Customize' button in the middle of the page.
Enter the following code into your Tumblr's 'Description' box:Replace 'yourgifurl' with the URL you copied to your computer's clipboard.
Click the 'Save' button at the top of the left column and then click 'Close' to close the customization settings. Check your blog to ensure that the GIF looks the way you want it to in your Tumblr's sidebar.
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