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Table of contents Why color balance matters in dark mode Choosing the right background shades Optimizing text and contrast ratios Adjusting link and accent colors Handling images and logos for dark mode Testing and validating color accessibility FAQ Why color balance matters in dark mode When you activate dark mode, it is not just about flipping the background to black and text to white. Poorly balanced colors can cause eye strain , make content hard to read, and even break your site's visual identity . The goal is to create a comfortable reading environment that still feels like your brand. For Mediumish , a content-first theme , you want readers to stay focused on the article. This means subtle backgrounds , clear text contrast , and carefully chosen accents that stand out without overwhelming the eyes. Choosing the right background shades Instead of pure black ( #000000 ), use deep but slightly muted tones . This reduces glar...

Table of contents Understanding theme flash problem Why it happens in Mediumish Preventing theme flash using CSS Preventing theme flash using JavaScript Best practices for smooth theme loading FAQ Understanding theme flash problem The theme flash problem occurs when your site loads with the wrong color scheme for a split second before applying the user's saved preference. In dark mode -enabled sites like Mediumish, this is noticeable: a white background flashes before switching to dark, or vice versa. While the flash might seem minor, it can disrupt the reading experience, especially for users in dark environments. Reducing or eliminating it helps create a polished, professional feel. Why it happens in Mediumish Mediumish loads CSS and JavaScript in sequence. If your theme preference is stored in localStorage or cookies , JavaScript must read it and then apply a class or data attribute. This happens after the HTML is rendered, m...

Table of contents Why store theme preferences Understanding localStorage basics Detecting system color scheme preference Saving user theme choice Applying saved preference on page load Syncing with system preference changes FAQ Why store theme preferences Without storing user preferences, your site will always revert to the default theme on each visit. This means a dark mode user will need to switch every time, which is inconvenient and lowers the overall user experience. By saving preferences, you ensure users get the same theme they chose last time, creating a sense of personalization and consistency across sessions. Understanding localStorage basics localStorage is a built-in web API that allows you to store small amounts of data directly in the user's browser. It persists even after the browser is closed, making it perfect for saving theme preferences. Key characteristics of localStorage: Stores key-value pairs as s...

Table of contents Why testing matters Preparing for testing Manual testing process Cross-browser and device testing Automated testing approach Accessibility validation Common bugs and fixes Final checklist FAQ Why testing matters Adding dark mode to Mediumish is not just about switching colors; it affects typography , contrast, images, and user interactions. Without proper testing, you might end up with unreadable text, clashing colors, or broken layouts. Testing ensures a consistent, accessible, and user-friendly experience for all visitors. Preparing for testing Before you begin, make sure you have: A staging or local development environment with your dark mode code implemented. Access to multiple browsers and devices ( physical or virtual ). A test plan outlining the features and scenarios to check. Accessibility tools such as screen readers or color contrast checkers . Preparation saves time and prev...

Table of contents Why performance matters for dark mode Common performance pitfalls Critical CSS strategy Fast theme detection and FOIT prevention Minimizing assets and safe swapping Efficient JavaScript patterns Image and media optimizations Testing and measuring performance Quick production checklist FAQ Why performance matters for dark mode Dark mode should feel instant and unobtrusive. If toggling theme adds measurable delay, causes layout shifts , or increases page load time, users perceive the site as sluggish and unreliable. For Mediumish — a content-first theme — readers expect fast rendering and smooth interactions. A slow dark mode can lead to higher bounce rates, poorer user engagement, and lower perceived quality. Performance matters not only for UX but also for SEO: slower pages often score lower on Core Web Vitals and search rankings. The goal is to add dark mode while keeping initial paint , interaction re...

Table of Contents Why site speed matters for Mediumish Measure before you change Critical CSS and stylesheet strategy Optimize images for modern web Deferring and loading JavaScript smartly Web fonts best practices Caching and CDN strategy Reduce HTTP requests and payloads Server, build and deployment tips Practical checklist and quick wins FAQ Why site speed matters for Mediumish Speed is not just a technical metric. For Mediumish-based blogs and publications it directly affects reader engagement, bounce rate , mobile usability, and search visibility. Readers expect near-instant loading, particularly on long-form posts that Mediumish typically showcases. A slow theme hurts readability and monetization: fewer pageviews, lower ad viewability, and poorer conversion for email signups. Search engines also reward fast pages. Core Web Vitals and other performance signals influence how often your content surfaces in searc...

Table of contents Why toggle design matters Types of toggle buttons Basic HTML structure for toggle Styling the toggle with CSS Adding smooth animation Accessibility considerations Best practice tips FAQ Why toggle design matters Even if your dark mode functionality is technically perfect, a poorly designed toggle can confuse users or make the feature feel secondary. A well-crafted toggle communicates its purpose instantly, invites interaction, and fits seamlessly with the site's style. Mediumish is a content-focused theme, so the toggle should be minimal yet distinct enough to be noticed without distracting from reading. Types of toggle buttons There are several ways to present a dark mode toggle: Switch-style toggle : Resembles a mobile switch, sliding between light and dark positions. Icon-based toggle : Uses sun/moon icons to indicate light and dark mode. Text label toggle : Displays "Light" and...