chemfyi-embed

Embed ChemFYI widgets — elements, glossary terms, interactive tools, and inline elements — on any website. 10 widget types, zero dependencies, Shadow DOM style isolation, 4 built-in themes (light, dark, sepia, auto), 2 styles (modern, technical), and live data from the ChemFYI database.

Every widget includes a "Powered by ChemFYI" backlink directing readers to the full reference.

Try the interactive widget builder at widget.chemfyi.com

Quick Start

<!-- Place widget div where you want it to appear -->
<div data-chemfyi="entity" data-slug="elements" data-theme="light"></div>

<!-- Load the embed script once, anywhere on the page -->
<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

That's it. The widget fetches data from the ChemFYI API and renders with full style isolation.

Widget Types

| Type | Usage | Description | |------|-------|-------------| | entity | <div data-chemfyi="entity" data-slug="..."></div> | Entity detail card — element, alloy, gem, star, or mineral | | glossary | <div data-chemfyi="glossary" data-slug="..."></div> | Glossary term definition with cross-references | | guide | <div data-chemfyi="guide" data-slug="..."></div> | Guide summary card with key takeaways | | compare | <div data-chemfyi="compare" data-slug="..."></div> | Side-by-side entity comparison | | search | <div data-chemfyi="search" data-slug="..."></div> | Search box linking to the full database | | element-card | <div data-chemfyi="element-card" data-slug="..."></div> | Large periodic-table-style element tile with CPK color | | formula-renderer | <div data-chemfyi="formula-renderer" data-slug="..."></div> | Interactive formula renderer — plain text to HTML subscripts | | phase-badge | <div data-chemfyi="phase-badge" data-slug="..."></div> | Matter state badge — solid, liquid, gas, plasma | | element-inline | <div data-chemfyi="element-inline" data-slug="..."></div> | Mini element cell — subscript number + symbol + CPK dot | | formula-inline | <div data-chemfyi="formula-inline" data-slug="..."></div> | Inline chemical formula with subscripts (e.g. H2SO4) |

Widget Options

| Attribute | Values | Default | Description | |-----------|--------|---------|-------------| | data-chemfyi | entity, compare, glossary, guide, search, [tools] | required | Widget type | | data-slug | e.g. "elements" | — | Entity slug from the ChemFYI database | | data-theme | light, dark, sepia, auto | light | Visual theme (auto follows OS preference) | | data-styleVariant | modern, technical | modern | Widget design style | | data-size | default, compact, large | default | Widget size | | data-placeholder | any string | "Search Elements..." | Search box placeholder |

Themes

<!-- Light (default) -->
<div data-chemfyi="entity" data-slug="elements" data-theme="light"></div>

<!-- Dark -->
<div data-chemfyi="entity" data-slug="elements" data-theme="dark"></div>

<!-- Sepia -->
<div data-chemfyi="entity" data-slug="elements" data-theme="sepia"></div>

<!-- Auto — follows OS dark/light preference -->
<div data-chemfyi="entity" data-slug="elements" data-theme="auto"></div>

Styles

<!-- Modern (default) — clean lines, rounded corners, accent gradients -->
<div data-chemfyi="entity" data-slug="elements" data-styleVariant="modern"></div>

<!-- Technical — monospace type, grid overlays, laboratory aesthetic -->
<div data-chemfyi="entity" data-slug="elements" data-styleVariant="technical"></div>

Web Components (Custom Elements)

As an alternative to data-* attributes, you can use native HTML custom elements:

<!-- Custom element form -->
<chemfyi-entity slug="elements" theme="light"></chemfyi-entity>
<chemfyi-compare slugs="elements,other-slug"></chemfyi-compare>
<chemfyi-search placeholder="Search Elements..."></chemfyi-search>

<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

Use style-variant (not style) to avoid conflicts with the HTML reserved style attribute.

Examples

Entity Card

<div data-chemfyi="entity" data-slug="elements" data-theme="light"></div>
<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

Side-by-Side Comparison

<div data-chemfyi="compare" data-slugs="elements,other-slug"></div>
<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

Search Box

<div data-chemfyi="search" data-placeholder="Search Elements..."></div>
<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

Glossary Term

<div data-chemfyi="glossary" data-slug="example-term" data-theme="light"></div>
<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

CDN Options

jsDelivr (recommended — global CDN, auto-updates with npm)

<script src="https://cdn.jsdelivr.net/npm/chemfyi-embed@1/dist/embed.min.js"></script>

Specific version (production stability)

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/embed.min.js"></script>

npm (for bundlers)

npm install chemfyi-embed

import 'chemfyi-embed';

Technical Details

• Shadow DOM: Complete style isolation — no CSS conflicts with your site
• Zero dependencies: No jQuery, React, or any external library
• 2 styles: Modern (accent gradients) and Technical (monospace, lab aesthetic)
• 4 themes: Light, Dark, Sepia, Auto (OS preference detection)
• CORS: ChemFYI API has CORS enabled for all origins
• MutationObserver: Works with dynamically added elements (SPAs)
• IntersectionObserver: Lazy loading — widgets only fetch when entering viewport (200px margin)
• Rich Snippets: DefinedTerm JSON-LD injected for glossary widgets
• Bundle size: Tree-shaken per site — only includes tools available on ChemFYI

Learn More About Elements

Visit chemfyi.com — ChemFYI is a comprehensive elements reference with interactive tools, guides, and developer resources.

• API docs: chemfyi.com/developers/
• Widget builder: widget.chemfyi.com
• npm package: npmjs.com/package/chemfyi-embed
• GitHub: github.com/fyipedia/chemfyi-embed

Science FYI Family

Part of FYIPedia — open-source developer tools ecosystem. Science FYI covers chemistry, geology, astronomy, and materials science. Hub: labfyi.com.

| Site | Domain | Focus | Package | |------|--------|-------|---------| | ChemFYI | chemfyi.com | Periodic table, elements, compounds, reactions | npm | | AlloyFYI | alloyfyi.com | Metal alloys, compositions, properties, 6-axis ratings | npm | | GemFYI | gemfyi.com | Gemstones, Mohs hardness, optical properties, origins | npm | | StarFYI | starfyi.com | Stars, constellations, spectral classification, magnitudes | npm | | MineralFYI | mineralfyi.com | 6,215 minerals, crystal systems, Mohs hardness | npm |

License

MIT — see LICENSE.

Built with care by FYIPedia.