# General

- [Editing themes](/spark/general/editing-themes.md)
- [Adding sections](/spark/general/editing-themes/adding-sections.md): Theme editor
- [Using templates](/spark/general/editing-themes/using-templates.md): Theme editor
- [Accessibility](/spark/general/editing-themes/accessibility.md)
- [Customizing your site](/spark/general/editing-themes/customizing-your-site.md)
- [H1 headings tags](/spark/general/editing-themes/h1-headings-tags.md)
- [SEO for Shopify themes](/spark/general/editing-themes/improve-seo.md)
- [Online store speed](/spark/general/editing-themes/online-store-speed.md)
- [Image guide](/spark/general/image-guide.md)
- [Web ready photography](/spark/general/image-guide/web-ready-photography.md): Image guide
- [Image sizes](/spark/general/image-guide/image-sizes.md): Image guide
- [File formats](/spark/general/image-guide/file-formats.md): Image guide
- [Theme image settings](/spark/general/image-guide/theme-image-settings.md): Image guide
- [Adapting theme content](/spark/general/adapting-your-theme.md)
- [Edit default theme content](/spark/general/adapting-your-theme/edit-default-theme-content.md)
- [Multiple languages](/spark/general/adapting-your-theme/multiple-languages.md)
- [Dynamic content with metafields](/spark/general/adapting-your-theme/dynamic-content-with-metafields.md)
- [Unique content for markets](/spark/general/adapting-your-theme/unique-content-for-markets.md)
- [Update your theme](/spark/general/theme-updates.md): Support
- [Upgrade to OS2](/spark/general/theme-updates/upgrade-to-os2.md)