Install SSL before switching DNS
Testing HTTPS on the destination before traffic arrives prevents a certificate problem from becoming a public outage.
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DNS & Security Tool
SSL & HTTPS Migration Readiness Checker
Review the main SSL, HTTPS and redirect dependencies before moving a WordPress site to a new host or domain.
Free to useNo account requiredRuns in your browser
Planning result
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Enter your site details and calculate.
How to use this ssl & https migration readiness checker
This free utility is designed for migration planning. It turns a few operational inputs into a structured result so you can identify what should be checked before a production change. It does not connect to your server, registrar, DNS provider or WordPress database, so it cannot replace a real technical audit.
Avoid redirect loops
Redirects can exist in WordPress, .htaccess, Nginx, a load balancer and Cloudflare simultaneously. Define one coherent canonical redirect path.
Mixed content can hide in the database
Old absolute HTTP URLs in page-builder content, widgets or plugin settings may cause browser warnings after migration. Search and replace carefully with serialized-data-aware tools.
Cloudflare Full (strict) needs a valid origin
When proxying is used, validate the encryption path between Cloudflare and the origin as well as the browser-facing certificate.
Important limitations
Does this tool change anything on my website?
No. It runs locally in the browser and only evaluates the values you enter. It does not log in to WordPress, connect to DNS, move files or modify hosting.
Can I use the result as a production checklist?
Use it as a starting checklist. Add the site-specific dependencies discovered during the source audit, including custom plugins, server rules, cron jobs, email, APIs, payment gateways and any third-party services.
When is manual migration planning necessary?
Manual planning is appropriate when the site generates revenue, has active customer data, cannot tolerate downtime, uses custom server configuration, has a large database or depends on integrations outside WordPress.
Professional interpretation
How to use SSL & HTTPS Migration Readiness Checker in a real WordPress project
The useful part of a planning tool is not the number by itself. It is understanding which assumptions produced the result, which production conditions can change it, and what should be checked before you act. Use this tool as part of a wider migration or infrastructure review rather than as an automatic go/no-go decision.
DNS changes affect more than the website
A domain can carry website routing, mail delivery, verification records, subdomains, third-party SaaS records and security policies. Review the full zone before changing nameservers or replacing records.
TTL is a cache instruction, not a global timer
Recursive resolvers and client caches do not all update at one exact moment. Lower TTL before a planned cutover when possible, then keep the old origin available long enough to absorb straggling traffic.
Email deserves a separate verification pass
MX, SPF, DKIM and DMARC should be checked independently of the website. A migration can appear successful in the browser while business email is silently misrouted or authentication begins failing.
Practical questions
Will everyone see a DNS change when TTL expires?
Not necessarily. TTL influences caching, but resolver behavior and previously cached answers vary.
Can nameserver changes break email?
Yes if the new DNS zone does not reproduce the required MX and authentication records.
Should the old server remain online?
Usually for a reasonable overlap period, especially while DNS propagation and cached traffic settle.