Fix Fullscreen Not Working in Chrome, Edge, or Safari (Run the Screen Test)
Fullscreen won’t enter, exits instantly, or looks wrong? Run the Screen Test to confirm viewport changes, then fix shortcuts, site restrictions, and extension conflicts that block fullscreen.
By Dana Brooks · Reviewed by Avery Collins
fullscreen not workingf11 not workingvideo won't go fullscreen
Read guideFix PWA Install Button Missing (Run the HTML5 Test)
No “Install app” option for a web app? Run the HTML5 Test to confirm Service Worker support, then fix private mode, storage blocks, and browser limitations that prevent PWA installation.
By Dana Brooks · Reviewed by Avery Collins
pwa not installinginstall app button missingadd to home screen not available
Read guideFix Sites Showing Mobile Version on Desktop (Run the User Agent Checker)
If a website forces the mobile layout or says “use the app” on desktop, run our User Agent Checker to confirm what the site sees, then remove device emulation, spoofing, and cached mobile cookies.
By Dana Brooks · Reviewed by Avery Collins
mobile version on desktopsite thinks i'm on mobileuser agent wrong
Read guideFix Time Zone or Location Mismatch on Websites (Run the Browser Privacy Check)
If a site shows the wrong country/time zone or blocks login, run our Browser Privacy Check to compare timezone, locale, and IP country—then fix clock settings, permissions, and proxy/VPN conflicts.
By Noah Kim · Reviewed by Dana Brooks
time zone mismatchtimezone wrong chromewebsite wrong country
Read guideFix Blurry Text, Wrong Zoom, or Cut-Off UI (Run the Screen Test)
Text looks soft, buttons are cut off, or pages are stuck zoomed? Run the Screen Test to check viewport and device pixel ratio, then reset zoom and display scaling safely.
By Dana Brooks · Reviewed by Avery Collins
blurry text chromebrowser zoom stuckpage too big in browser
Read guideFix a Website That Looks Broken in Your Browser (Run the CSS Test)
Overlapping layouts, missing buttons, or sticky headers that won't stick? Run the CSS Test, then update the browser, disable compatibility modes, and remove CSS-injecting extensions.
By Dana Brooks · Reviewed by Avery Collins
website looks brokencss grid not supportedsticky header not working
Read guideEnable JavaScript in Chrome, Safari, and Firefox (Run the Browser Test)
Seeing 'JavaScript is disabled' or pages stuck loading? Run the Full Browser Test, then allow JavaScript and remove blockers in Chrome, Edge, Firefox, and Safari.
By Dana Brooks · Reviewed by Avery Collins
enable javascriptjavascript disabledturn on javascript chrome
Read guideFix Touch Screen Not Working in Your Browser (Run the Touch Support Test)
Taps ignored or gestures missing on a touchscreen laptop or tablet? Run the Touch Support Test, then fix drivers, remote desktop issues, and browser blockers.
By Dana Brooks · Reviewed by Avery Collins
touch screen not workingtouch not working in chromemaxTouchPoints 0
Read guideFix 'Video Not Supported' Errors in Your Browser (Run the Codec Test)
Black video screens or 'format not supported' errors? Run the Codec Test to see MP4 (H.264), WebM (VP9), and audio support, then apply the targeted fixes below.
By Dana Brooks · Reviewed by Avery Collins
video not supportedvideo format not supported browserhtml5 video not supported
Read guideFix Copy and Paste Not Working in Chrome, Edge, or Firefox (Run the Clipboard Test)
Paste button greyed out or copy does nothing? Run our Clipboard Test, then enable clipboard permissions, remove blockers, and keep copy/paste reliable across tabs.
By Dana Brooks · Reviewed by Avery Collins
copy paste not working chromebrowser clipboard blockedcannot paste into website
Read guideFix Browser Notifications Not Working in Chrome, Edge, or Firefox (Run the Notifications Test)
No desktop alerts from Gmail, Slack, or calendar events? Run our Notifications Test, then repair permissions, focus modes, and background settings for reliable web push.
By Dana Brooks · Reviewed by Noah Kim
browser notifications not workingchrome notifications blockedslack notifications not showing
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