FeedBurner Entry Limits
FeedBurner is a service that helps you make Really Simple Syndication (RSS) feeds available to your site’s subscribers. Anyone interested can click the FeedBurner button on your site, then add the RSS feed to his favorite feed reader to receive updates. It’s important for you to be aware that FeedBurner's feed size limit is 512K. If you exceed that limit, you’ll cut off access to your RSS feed for your subscribers.
Other People Are Reading
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Feed File Size Limit
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No matter what RSS service you use, your RSS feed file size includes all entries you've posted to your site that fit parameters you determine. For example, you can set parameters to only include the most recent 10 entries in your RSS feed. Each RSS feed provider has limits on what feed file size it can handle; FeedBurner's is 512K. For the feed file size to rise above 512K, you’d have to have a lot of very long posts. FeedBurner's parent company Google advises that if your FeedBurner feed sizes ever do cross the 512K threshold, your Burned feed simply won’t update until you correct the problem. That means any users who subscribe to your FeedBurner RSS feed won’t see any updates you post until you correct it as well.
FeedBurner Warning
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The FeedBurner service automatically sends you a warning if your feed size is approaching the 512K limit. That way, you can make adjustments to your feed so you don’t inadvertently interrupt service to your subscribers. You should check your email system’s spam filter to be sure you receive notifications from FeedBurner in your Inbox. Some email systems automatically redirect messages that are perceived as spam to either your Trash or Spam folders, where you won’t be likely to see them.
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Adjusting File Sizes with Blogger
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If you have a Blogger blog, you can manually adjust the number of entries that FeedBurner will include in your feed. Log into your FeedBurner account, then click the title of your blog on the My Feeds page. Change the part that comes after blogspot.com to read “/feeds/posts/default?max-results=4”. The “4” can be changed to any number between 1 and 500. If your tendency is to write longer posts (over 2,000 words on a regular basis), choose a lower number -- under 100 to start. You can always adjust this number later if you want to show more posts in your RSS feed and have tested it so you know that you can safely do so. If you write shorter posts or keep a blog that's mostly a roundup of interesting links without lengthy commentary, you can go up to 500 in relative safety. If you write very long entries and allow a high number of them in your feed, you run the risk of hitting that 512K limit.
Linking to External Files
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If your site links to a lot of external files, such as podcasts, videos or other items with large file sizes, don’t worry. Since the contents to which you’re linking aren’t archived as part of your feed, they don’t affect your feed’s size. It’s only the text and images that are part of your page that make a difference in your feed’s size.
Checking Your File Size
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Google suggests using the free Web Sniffer service to check your feed’s file size if you’re unsure of how large it is. Simply go to the Web Sniffer website and enter the URL of your site’s RSS feed. The site will then generate a report, which will include the total file size. From there, you can make any adjustments you deem necessary to keep it within FeedBurner limits.
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