If you publish coding tutorials, readers need to see the exact commands and markup without the blog trying to run them. Blogger's HTML editor can interpret tags such as <div> as real elements, so pasting raw code carelessly may break the layout.
You can show a readable code snippet in a Blogger post with standard HTML elements and a few escaping rules. No JavaScript syntax-highlighting plugin is required for the basic job.
What do pre and code tags do?
The <code> element identifies code text. The <pre> element preserves whitespace and line breaks. Together, they display multiline snippets in a form readers can inspect and copy.
MDN documents both preformatted text and the code element.
Step 1: Switch to Blogger HTML view
Open the post editor and use the menu to switch from Compose view to HTML view. Make a copy of the existing post HTML before adding a long or complex snippet. Place the code block in the article where it helps explain a specific step.
Step 2: Escape HTML characters in the snippet
When displaying HTML code as text, replace reserved characters:
<represents the less-than sign.>represents the greater-than sign.&represents an ampersand.
For example, to display an actual <h2> tag to readers, do not insert it raw as the content of your code example. Use escaped characters inside a code block so the browser displays the tag rather than treating it as a heading.
Step 3: Wrap the example in pre and code
A safe example for the Blogger HTML editor looks like this:
<pre><code><h2>Example heading</h2>
<p>Example paragraph</p></code></pre>In the published article, readers should see the literal HTML tags as code. Preview the post after pasting to confirm the editor preserved them.
Step 4: Prevent long lines from breaking mobile layout
Long commands, URLs, or JSON strings can extend beyond the content width. Wrap your block in a container that allows horizontal scrolling, or use an appropriate CSS rule for code blocks.
For example, the following wrapper is a simple option:
<div style="max-width:100%;overflow-x:auto;">
<pre><code><h2>Example heading</h2></code></pre>
</div>The inner example shows an escaped H2 heading that readers can adapt to their own markup. If your theme already styles code blocks responsively, avoid stacking redundant wrappers.
Step 5: Keep copyable commands accurate
Use a monospaced code block for real commands, file paths, and parameters. Test the instructions yourself when possible. Explain which operating system or application version they apply to and whether the command is read-only or changes data.
Do not insert commands that delete files, disable security, or expose credentials without a clear explanation of risks and legitimate use. Code snippets are instructions readers may copy directly.
Step 6: Check Compose view and published output
Blogger may adjust markup when switching between editor modes. After editing, preview the post, inspect the visible code, and confirm the tags are still escaped. Check line breaks and indentation on both desktop and mobile.
When a code block looks wrong, return to HTML view and inspect the exact surrounding markup rather than adding random closing tags.
Do you need syntax highlighting?
Colorful syntax highlighting can help with long code examples, but it is optional. It often adds JavaScript or CSS dependencies, which may increase maintenance or conflict with a Blogger theme. Start with readable plain code; add highlighting only when the benefit justifies the complexity.
Common code block mistakes
- Pasting raw HTML tags into a code example without escaping them.
- Using a normal paragraph for dozens of lines of code.
- Leaving a wide block with no overflow handling on mobile.
- Copying a code snippet from an untrusted page without understanding it.
- Failing to test whether an editor mode switch rewrote the code.
- Adding a new syntax library for one tiny snippet.
Frequently asked questions
Why did my HTML example turn into actual page elements?
The browser interpreted unescaped markup. Use HTML entities inside a code block to show literal tags.
Can I add code snippets without a plugin?
Yes. Standard pre and code elements work for ordinary static code examples.
Why does my code run off the right side of the phone screen?
A long line can exceed the post width. Provide a scrollable wrapper or suitable code-block overflow styling.
Should I use screenshots instead of code?
Use real text code when readers need to copy it. Screenshots can explain the interface but are not a substitute for selectable commands. When a screenshot does add value, our guide to image alt text, WebP, and speed shows how to prepare it for your blog.
Final check
Escape reserved characters, wrap the snippet in semantic HTML, keep long lines contained, and test the live result. A simple code block that readers can copy reliably is more useful than a fragile visual effect.