Switching platforms, connecting two systems or automating a repetitive task are projects that go well when they are planned around what already exists: the URLs Google knows, the data the team uses every day, the processes nobody wrote down.
The articles in this section explain how we approach those decisions, and the technical pieces that show up along the way, from cron expressions to Unix timestamps.
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Your public IP address: what is it, and what does it reveal?
The difference between a public and a private IP, why yours changes, what a server can and cannot learn from it, and why support teams and allow-lists ask for it.
What is a Unix timestamp, and why do so many systems use it?
What a Unix timestamp actually counts, how to tell seconds from milliseconds, where UTC and ISO 8601 come in, what the year 2038 problem is and which mistakes appear when systems are connected.
How to recover a site’s old URLs before migrating it
Why the URL inventory is the step that saves the most traffic in a migration, which sources to build it from (Search Console, server logs, the Wayback Machine), and how to turn it into a redirect map.
Cron expressions explained: how to read and write them
The five fields of a cron expression, the four symbols that combine them, business examples, and the mistakes that make a job run at the wrong time or on the wrong days.
What to automate first when everything looks automatable
A method for choosing your first automation without spending the budget on the wrong workflow - how to measure what manual work actually costs, and which signals mean a process is not ready yet.
Migrating off WordPress without losing your SEO
The full process we follow on every migration - what to measure before touching anything, how to build the redirect matrix, and what to watch through the thirty days after launch.
How to find out what a website is built with
The clues any site leaves about its CMS, its framework and its hosting, how far you can trust them, and why it helps to know before a redesign or a migration.
Check it on your site
Free tools, no sign-up, that run the checks these articles talk about.
- Website technology checkerThe CMS, framework, hosting and CDN behind any site, read from its headers and its code.
- Old URLs finderEvery address Internet Archive has seen on your domain: the list you need before migrating.
- Redirect checkerThe full chain of hops with their status codes, and the cache and security headers explained.
- Cron expression generatorBuild the expression, read it in plain English and check when it will actually run.
- Unix timestamp converterTimestamp to date and back, in every format you will run into, across several time zones at once.
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