Chameleon for Gmail - Increase Font Size, Reader Mode & Visual Privacy

Increase Gmail font size without breaking the layout. Reader mode for focused reading. Visual privacy from prying eyes.

Gmail's font size is too small on laptops, and there is no way to change it. Browser zoom breaks the layout - the sidebar expands, buttons grow, and you scroll horizontally just to read one email. There is no reader mode. The inbox never stops competing for your attention. And there is no way to hide your screen from prying eyes. Chameleon adds four visual lenses to Gmail. Each one changes how email looks on your screen without changing anything in the email itself. Everything runs locally in your browser - no account, no server, no data collected. 🔍 Increase Font Size - Make Gmail text bigger without breaking the layout Unlike browser zoom, which scales everything (sidebar, buttons, headers, menus), Chameleon increases only the font size of the content you read. Subject lines, sender names, preview text, and message bodies scale to a comfortable size up to 180%. Gmail's interface stays at its default size. No horizontal scrolling, no oversized sidebar. Your preferred font size is saved automatically across sessions. Best for: Laptop users (especially 13-inch screens), anyone over 40, people with low vision, anyone who finds Gmail's default text size too small. 📖 Reader Mode - Read email like a book Opens any email or thread in a clean, full-screen reading view. Gmail's sidebar, toolbar, and visual clutter disappear. Your message renders in comfortable serif typography, centered in a 68-character column - the same line width used by books and e-readers. Three themes (light, sepia, dark), a 3-step font size control, and thread-by-thread navigation. Single-keystroke activation. Works on individual emails and full threads. Best for: Long emails, newsletters, detailed threads, and anyone who struggles to focus in Gmail's default interface. Knowledge workers managing high email volume. People with ADHD or attention difficulties who need fewer visual distractions. 🔒 Visual Privacy - Hide your screen from prying eyes Scrambles visible text in your inbox and email threads using font-based character substitution. Your Gmail looks like gibberish to anyone nearby. In your inbox, hover over any row to reveal that message; in an open email, hold to reveal text behind a moving window. The eye button instantly reveals or re-scrambles everything in one tap. Turn the lens off entirely whenever you want. Important: This is visual obfuscation, not cryptographic security. It protects against shoulder surfing - the person sitting next to you in a cafe, train, or open office reading your screen - not a determined attacker with physical access to your device. Best for: Hide your screen in public. Shoulder surfing prevention for commuters, cafe and coworking-space workers, open-office employees, anyone handling sensitive conversations in shared environments. 🎯 Focus - Quiet the inbox Dims low-signal inbox rows - promotional, no-reply, and CC'd messages - so the conversations that matter stand out. The inbox stops competing for your attention, without leaving Gmail, switching views, or hiding anything. Best for: Anyone who feels overwhelmed opening Gmail, deep-work and digital-minimalism fans, people who want a calmer inbox without changing how Gmail works. 🔐 Privacy and trust Chameleon runs entirely in your browser. There is no server, no data collected, and no email content ever leaves your machine. The extension uses only two permissions: storage (to save your lens preferences locally) and the mail.google.com host permission (required to apply visual lenses inside Gmail). No analytics. No account. No tracking. Manifest V3. How it works Chameleon applies visual transformations inside Gmail using CSS and font substitution, entirely within your browser. No email content is modified, stored, or transmitted. All lenses run locally and only change how the page appears on your screen. Activate one lens or combine several from the Chameleon icon in Gmail's toolbar. What Chameleon is not Not encryption - Visual Privacy provides visual obfuscation, not cryptographic security. Not a data collection tool - the extension does not collect or transmit any email data. Not a Gmail replacement - it changes how you see email, not how Gmail works. Permissions explained Storage - saves your lens preferences (active lenses, zoom level, reader theme) locally in your browser. mail.google.com - required so Chameleon can apply visual lenses inside Gmail. No other sites are accessed. Built by an independent team Chameleon is built by Chameleon Labs, an independent team based in Europe. We do not take funding that requires us to monetize user data. We will never sell data, show ads, or require an account to use the core lenses. Support and feature requests: use the support tab on this listing, or visit chameleonlabs.adaptivemessages.com.