If you want to share a snippet of code in a Mastodon post, the standard interface does not include a dedicated code block button. This makes it difficult to preserve indentation and formatting, especially for longer code samples. Glitch-Soc, a popular fork of Mastodon, adds native support for code blocks directly in the post composer. … Read more
When you compose a post in Mastodon, you cannot attach more than four images or a single video file in the same post. This limit is enforced by the Mastodon software itself, not by individual server administrators. You might see an error message saying “Too many media attachments” if you try to exceed this rule. … Read more
When you upload an image to Mastodon, the platform automatically generates a thumbnail preview. The default crop often cuts off important parts of the picture, such as a face or a key object. Mastodon lets you set a focus point within the alt text editor to control which area of the image remains visible in … Read more
When you upload an image to Mastodon, the platform encourages you to add a description, known as alt text, for accessibility. However, the default behavior does not block sending a post if you skip writing that description. This can lead to posts with images that are invisible to users who rely on screen readers or … Read more
You want to post a GIF on Mastodon, but your file keeps getting rejected or plays as a static image. Mastodon supports GIF files, but it converts them to video format MP4 during upload. This conversion process has specific requirements that can cause failures if your source file does not meet them. This article explains … Read more
When you want to mention a user on Mastodon who is not on your home instance, the standard @username format will not work because Mastodon requires the full account address. Tagging someone across instances means you must include their instance domain in the mention. This article explains the correct syntax for cross-instance mentions, shows you … Read more
When you share a link in a Mastodon post, the platform usually fetches metadata from the target page and displays a preview card with a title, description, and image. If that preview card does not appear, the post looks incomplete and can reduce engagement from followers. This problem typically occurs because the shared URL does … Read more
Mastodon does not include a native draft feature in its official web interface or mobile apps. When you start composing a post and close the window, the unsaved text is lost permanently. This can be frustrating if you need to research a link, fact-check a claim, or simply take a break before publishing. This article … Read more
When you upload a header or avatar image to your Mastodon profile, the platform automatically crops and resizes it to fit fixed display areas. This cropping can cut off important parts of your image if you do not prepare the file at the correct aspect ratio. Many users discover the cropping only after saving the … Read more
Mastodon supports basic text formatting to make your posts more readable and engaging. Unlike some other social platforms, Mastodon does not rely on a visual editor for rich formatting. Instead, it uses Markdown, a lightweight markup language that converts plain text into styled HTML. This article explains which Markdown elements work in Mastodon posts and … Read more