Which Devicon versioned icon class applies when multiple releases are included?

Direct Answer

Devicon does not provide version-scoped namespace prefixes. Each release variant uses a distinct flat class name (e.g., devicon-php-5-plain, devicon-php-7-plain, devicon-php-8-plain). The class you place on the element determines which glyph renders; there is no automatic version selection or cascade-based "winner" between different versioned classes.

Cascade Behavior

• Different versioned selectors = no conflict. devicon-php-5-plain and devicon-php-8-plain are separate selectors. Both can exist in the same document and render their respective glyphs simultaneously.
• Identical selectors across stylesheets = later load wins. If you load two full Devicon builds that both define devicon-php-plain (the generic/unversioned class), the stylesheet loaded last overrides the earlier one for that selector. This is standard CSS source-order precedence, not semantic version awareness.
• Duplicate @font-face declarations may appear in the console when multiple full builds load, increasing payload without benefit.

How to Confirm the Rendered Variant

1. Open DevTools → Elements panel and select the icon element.
2. Verify the class attribute contains the exact versioned class you intended (e.g., devicon-php-8-plain).
3. Inspect the Computed styles for the ::before pseudo-element:
   • Font distribution: check content (the glyph codepoint) and font-family (should be "devicon").
   • SVG/CSS background distribution: check background-image URL to see which glyph file is referenced.

Practical Recommendation

• Load one Devicon build (the latest you need) and use explicit versioned classes on each element.
• If you must support multiple versions of the same technology on one page, include only the specific versioned classes you need—avoid loading multiple full stylesheets.
• Do not rely on cascade order to "pick" a version; use the precise class name in your markup.

One Missing Detail That Changes Verification Steps

Are you using the font-based distribution (classes like devicon-php-8-plain with ::before content) or the SVG/CSS background distribution (classes that apply background-image), and which technology (e.g., PHP, Angular, Node) has the versioned entries you need? The computed-style check differs slightly between the two distributions.