Mixed Content Happens When HTTPS Pages Load HTTP Resources
The main page may use HTTPS, but an image, script, stylesheet, font, or iframe may still use an insecure HTTP address. Browsers may block the resource or show a warning.
Use The Browser Developer Tools
Open the browser console and reload the page. Mixed-content messages usually show the exact insecure URL.
Check The Page Source And Database
Hardcoded HTTP links may exist in theme files, page-builder content, widgets, database records, or plugin settings.
Replace URLs Carefully
For WordPress, a search-and-replace tool that understands serialized data is safer than editing raw database text. Create a backup first.
Check External Resources
If the insecure resource belongs to another website, confirm it supports HTTPS. If not, host an authorized copy locally or remove it.
Clear Every Cache
After corrections, clear page cache, CDN cache, plugin cache, and browser cache. Cached HTML can continue referencing old HTTP URLs.
Force HTTPS Only After The Site Works
Redirecting all traffic to HTTPS is important, but redirects alone do not fix insecure resources embedded inside pages.
Verify More Than The Homepage
Check forms, posts, product pages, account areas, and older content. Mixed content often appears only on specific pages.