Adding images to your Craigslist classified posts can make a powerful impact on your visitors by adding details and information you can't include in your post. Additionally, because Craigslist allows users to filter their search results to only include posts with images, attaching an image to your post may increase its visibility on the classifieds site. If you run into problems using Craigslist's upload form, you may still be able to add photos or use HTML code to embed them in your post.

Upload Limits

If you've been able to upload images to your post and suddenly find that you can't access the posting interface anymore, you may have reached the file-upload limit. Craigslist only allows you to upload up to 12 images per post. You can see how many images you've already uploaded by counting the thumbnail images in the upload form. To remove an image from the post, click the "X" in the thumbnail. The least recent image displays in the post as your default image.

File Size

While Craigslist doesn't specify the dimension and file-size limits for uploading photos, if you try to upload a high-resolution image with a large file size, the upload form may freeze or experience a severe lag. Craigslist automatically resizes and compresses any photo you post so that it's no larger than 600 pixels wide by 450 pixels high. If you're experiencing lagging or freezing while trying to upload a large image file, you may be able to resolve the problem by resizing the image to smaller dimensions and a smaller file size, and then attempting the upload again.

Workarounds

You can add images directly into your post by using HTML code to embed external image files into the post content. Use the following code syntax to embed an image, replacing the placeholder text with your own information:

<img src="http://www.yourwebsite.com/yourimage.jpg">

Craigslist doesn't compress or resize images you embed into your post from an external file, so you can use much larger dimensions and file sizes when embedding a photo into your post. You can see what the photo looks like in your post when you preview it prior to publishing it.

Limitations

Craigslist does not allow the use of the IMG tag in the For Sale category, meaning that you can only attach images to For Sale posts using the Craigslist upload form. In addition, embedding uncompressed images instead of uploading them through Craigslist may make your post take a long time to load for your visitors, which can affect the response rate the post gets. Finally, because you can only upload JPG, GIF and PNG files with the upload form, to attach any other kind of file to your post, you must add a link to its location on an external server in the description section of the post.