RSS to Twitter Preview
Before you set up RSS to Twitter automation, see what it will post. This free tool validates your feed and shows its newest items as X, Bluesky and LinkedIn posts.
What will my RSS feed look like on X?
Paste your feed URL to see how its newest items would look as posts on X, Bluesky and LinkedIn, with each platform's character count. OpenTweet can then post new items to X automatically.
RSS to Twitter, Bluesky and LinkedIn: what each one counts
| Network | Limit | How a link counts |
|---|---|---|
| X | 280 weighted characters | 23, whatever its length |
| Bluesky | 300 graphemes and 3,000 bytes | Full length when sent through the API |
| 3,000 characters | Full length |
A {title} {url} post with a long headline can fit X and still run over on Bluesky, because the link costs more there. Check the Bluesky column before you cross-post.
Fix these before you automate a feed
Missing links
Without a <link> on each item, {url} is empty and the post points nowhere.
Missing or broken dates
Without a pubDate (RSS) or updated date (Atom), readers cannot tell which item is newest.
Duplicate GUIDs
Two items with one guid look like one item, so the second never gets posted.
HTML in titles
Tags such as <b> inside a title can show up as literal text in some readers.
Where the RSS connector posts
OpenTweet's RSS connector posts new feed items to X. It does not post to Bluesky or LinkedIn. To share an item there too, pick those networks on the post in the composer, or set the platforms field in the REST API. Connector posts that carry a link count toward your plan's link posts: 10 a day on Advanced, 20 on Agency, and none included on Pro. When none are left, the connector posts the item without its link.Post new feed items to X automatically
Add your feed as an RSS connector in OpenTweet. It finds the feed from your site address, turns each new item into a post with AI or your template, and schedules it on X. Cross-post any of them to Bluesky and LinkedIn from the composer.
7-day free trial, then from $11.99/mo.
RSS to Twitter FAQ
How do I post an RSS feed to Twitter automatically?
Connect the feed to a tool that checks it for new items and turns each one into a post. In OpenTweet, an RSS connector takes a feed or a site address, finds the feed, and turns new items into X posts, either written by AI or filled from a template with {title}, {url} and {description}. Posts can be scheduled automatically or kept as drafts to review.
Can I send an RSS feed to Bluesky or LinkedIn?
OpenTweet's RSS connector posts to X only. To get the same item onto Bluesky and LinkedIn, pick those networks on the post in the OpenTweet composer, or set the platforms field when you create the post through the REST API. This preview shows how each item would look on all three before you choose.
What does this RSS feed validator check?
It reads the feed once and reports the format (RSS, Atom, RDF or JSON), the item count and the last update. It flags an empty feed, items without a link or a readable date, item IDs that appear more than once, HTML tags inside titles, relative links and a feed whose newest item is over 90 days old.
Why is the character count different on X, Bluesky and LinkedIn?
Each network counts differently. On X every link counts as 23 characters, whatever its length, and the limit is 280. On Bluesky a link sent through the API counts at its full length, and the limit is 300 graphemes and 3,000 bytes. On LinkedIn a link counts at full length against 3,000 characters.
Why do duplicate GUIDs matter?
Feed automations decide what is new by each item's ID: its guid in RSS, its id in Atom, or its link when neither exists. When two items share an ID, the second looks like something already posted and is skipped. Give every item its own permanent guid.
Does X or LinkedIn have an RSS feed?
No. Neither X nor LinkedIn publishes an RSS feed for profiles or posts, so there is no official Twitter RSS to subscribe to. To post about your own content, point an automation at your blog, newsletter, podcast or YouTube channel feed instead.
Why can this tool not read my feed?
It only reads public https addresses, up to 5 MB, and gives up after about 25 seconds. Private or internal addresses are refused, as are responses that are not text, such as images or PDFs. If you pasted a site address and no feed was found, paste the feed address itself, often ending in /feed, /rss or /feed.xml.
Does this tool post anything or save my feed?
No. It reads the feed when you click the button and shows the result on this page. Nothing is posted and nothing is saved to an account.
Related tools and guides
RSS to Twitter
Auto-post your blog, podcast or newsletter feed to X.
RSS Connector
How the connector reads feeds, writes posts and schedules them.
RSS Integration
Connect any RSS or Atom feed to your X account.
RSS Automation
Turn any feed into a steady stream of X posts.
Auto-Post RSS Feeds to Twitter
A step by step guide to RSS to Twitter automation.
RSS to Twitter Automation Guide
Templates, AI rewrites and scheduling for feed posts.
Social Media Character Counter
Count one post for X, Bluesky and LinkedIn at once.
Cross-Posting
One draft to X, Bluesky and LinkedIn, counted per platform.