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A minimal, text-heavy theme for Hugo

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Explore Theme Features

Aug 19, 2025 Theme Guide Rain Doctor

Explore is a minimal, text-heavy theme for Hugo, designed for academic sites, personal blogs, and essays. It prioritizes readability, performance, accessibility, and maintainability.

“Have nothing in your houses that you do not know to be useful or believe to be beautiful.”

– William Morris

Features

Performance & Security

  • Subresource Integrity (SRI): All generated CSS and JS include integrity hashes to prevent tampering.
  • IIFE JavaScript: Scripts are wrapped to avoid global scope pollution.
  • Self-Hosted Fonts: Both font presets are bundled locally — zero external requests.
  • Hugo Pipes: CSS is processed, minified, and fingerprinted through Hugo’s asset pipeline.

Design System

  • Design Tokens: Three-tier CSS custom property architecture (primitive, semantic, component).
  • Font Presets: Switch between inter and google-sans with a single config line.
  • Color Palettes: Four built-in palettes with independent light and dark values.
  • Fluid Spacing: Clamp-based spacing scale that adapts between viewport sizes.
  • Type Scale: Minor Third (1.2x) typographic scale.

Accessibility & UX

  • WCAG 2.1 AA: Semantic HTML, ARIA landmarks, keyboard navigation, and sufficient contrast.
  • Dark Mode: Automatic detection via prefers-color-scheme with manual toggle and persistence.
  • Smooth Toggle Transitions: No flash of unstyled content when switching themes.

Interactive Features

  • Reading Progress Bar: Thin indicator at the top of the viewport on single posts.
  • Code Copy Button: One-click copy on all code blocks with language label.
  • Card Hover Effects: Post cards lift with shadow and title color change.
  • ScrollSpy ToC: Active heading highlighted in the sidebar table of contents.
  • Breadcrumb Navigation: Hierarchical breadcrumbs on all inner pages.

Content & SEO

  • Client-Side Search: Fuse.js (zero-config) or Pagefind (for large sites). Search bar on list pages redirects to the search page with pre-filled results.
  • Server-Rendered Widgets: Sidebar widgets for recent posts, categories, and tags with separators and metadata.
  • Responsive Figure Shortcode: WebP with LQIP blur-up and srcset.
  • SEO Metadata: JSON-LD, OpenGraph, and Twitter Card tags.
  • Helpful 404 Page: Inline search and recent posts for easy recovery.
  • Centralized Config Defaults: Override only what you need.

Font Presets

The theme ships with two self-hosted font presets. Set params.style.fontPreset in your config.toml:

Preset Sans-Serif Monospace Character
inter (default) Inter JetBrains Mono Clean, neutral, highly legible
google-sans Google Sans Flex Google Sans Code Friendly, geometric, modern
[params.style]
  fontPreset = "google-sans"

No external font requests are made — both presets are bundled in the theme’s static/fonts/ directory.

Color Palettes

Four named palettes are available. Each defines its own light and dark mode values:

Palette Light Primary Light Accent Character
default #1a73e8 #1e8e3e Familiar blue/green — works everywhere
ocean #0077b6 #00838f Deep teal — calm, professional
forest #2d6a4f #52b788 Natural green — warm, organic
slate #475569 #64748b Understated gray — minimal, editorial
[params.style]
  palette = "ocean"

When using a named palette, the primary and accent fields in your config are ignored. To use custom colors instead, set palette = "default" and specify your own values:

[params.style]
  palette = "default"
  primary = "#6C3DBF"
  accent  = "#5FA8A3"

Interactive Features

All interactive features are enabled automatically. No configuration is needed.

  • Reading progress bar — visible as you scroll through any single post
  • Code copy button — appears on every fenced code block (try the examples on this page)
  • Card hover effects — post cards on list pages lift with shadow and title highlight
  • ScrollSpy ToC — the active heading is tracked in the sidebar table of contents
  • Breadcrumbs — hierarchical navigation at the top of inner pages
  • Smooth theme toggle — the light/dark switch transitions without a flash

For a hands-on demonstration of each feature, see Interactive Features.

Configuration

All theme options live in your site’s config.toml under [params]. Below is a breakdown of the available sections.

UI Parameters

[params.ui]
  stickyHeader = true
  showSearch = true       # Show search icon in header
  searchEngine = "fuse"   # Options: "fuse", "pagefind"

Style Parameters

[params.style]
  fontPreset = "inter"           # "inter" or "google-sans"
  palette = "default"            # "default", "ocean", "forest", "slate"
  primary = "#6C3DBF"            # Custom primary (when palette = "default")
  accent  = "#5FA8A3"            # Custom accent (when palette = "default")
  containerMaxWidth = "1280px"   # Max width of the site container
  maxWidthCh = 75                # Max width of readable content in 'ch' units

Sidebar & Widgets

[params.sidebar]
  globalPosition = "right"  # Options: "left", "right", "bottom", "off"
  widgets = ["recent", "categories", "tags"]
  recentCount = 5

Single Page & ToC Parameters

[params.single]
  showPrevNext = true    # Previous/next post navigation
  showRelated = true     # Related posts section
  relatedCount = 4       # Number of related posts

[params.single.toc]
  enable = true          # Can be disabled per-page with `toc: false`
  position = "right"     # Options: "inline", "left", "right", "off"

For a deeper guide on visual customization, see Customizing Your Theme.

features documentation hugo

Table of Contents

  • Features
    • Performance & Security
    • Design System
    • Accessibility & UX
    • Interactive Features
    • Content & SEO
  • Font Presets
  • Color Palettes
  • Interactive Features
  • Configuration
    • UI Parameters
    • Style Parameters
    • Sidebar & Widgets
    • Single Page & ToC Parameters

Recent Posts

  • Hello World: A Guide to Getting Started Aug 20, 2025
  • Explore Theme Features Aug 19, 2025
  • Markdown & Typography Guide Aug 18, 2025
  • Customizing Your Theme Aug 17, 2025
  • Interactive Features Aug 16, 2025

Categories

  • Features2
  • Getting Started2
  • Theme Guide2
  • Demo Content1
  • Hugo1
  • Layouts1

Tags

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← Markdown & Typography Guide Hello World: A Guide to Getting Started →

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