Guides for keeping websites healthy

Oct 4, 20267 min readRead

7 Best Free Website Monitoring Tools in 2026

The 7 best free website monitoring tools of 2026 — genuinely free options for uptime, SSL, and more. What each free tier includes, the catches to watch, and which to pick.

Oct 4, 20267 min readRead

SaaS Uptime Monitoring: Protect Your SLA & Your Customers (2026)

SaaS uptime monitoring protects your SLA, revenue, and customer trust. What to monitor beyond the homepage, SLA uptime targets explained, and how to catch outages first.

Oct 4, 20267 min readRead

WordPress Uptime Monitoring: How to Keep Your Site Online (2026)

Set up WordPress uptime monitoring to catch outages before your visitors do. Why WP sites go down, why a plugin isn't enough, and how to get instant alerts — free.

Oct 4, 20268 min readRead

What Is Uptime Monitoring? The Complete Guide for 2026

What is uptime monitoring, how does it work, and how do you choose uptime monitoring software? A practical guide — check types, what uptime % really means, and what to look for.

Oct 2, 20268 min readRead

The 7 Best Site24x7 Alternatives in 2026 (Free & Paid)

Looking for a Site24x7 alternative? Compare the 7 best website monitoring tools of 2026 — simpler and more focused than Site24x7's suite, without the add-on costs. Free options included.

Oct 2, 20268 min readRead

The 7 Best Better Uptime Alternatives in 2026 (Free & Paid)

Looking for a Better Uptime alternative? Compare the 7 best uptime monitoring & status page tools of 2026 — simpler, flat-priced, or broader coverage than Better Stack. Free options included.

Oct 1, 20268 min readRead

The 7 Best UptimeRobot Alternatives in 2026 (Free & Paid)

Looking for an UptimeRobot alternative? Compare the 7 best uptime & website monitoring tools of 2026 — free tiers (incl. commercial-use options), features, and which fits your team.

Sep 30, 20268 min readRead

The 7 Best Pingdom Alternatives in 2026 (Free & Paid)

Looking for a Pingdom alternative? Compare the 7 best uptime & website monitoring tools of 2026 — features, coverage, pricing, and which fits your team. Free options included.

Sep 28, 20267 min readRead

How to Fix SSL Certificate Errors

SSL certificate errors mean your browser can't trust a site's certificate. Here's what causes them — expired, mismatched, or untrusted certs — and how to fix each.

Sep 27, 20268 min readRead

How to Fix ERR_SSL_PROTOCOL_ERROR

ERR_SSL_PROTOCOL_ERROR means your browser couldn't establish a secure connection. Here's what it means and how to fix it — as a visitor or a site owner.

Sep 26, 20267 min readRead

How to Fix the "Too Many Redirects" Error

A "too many redirects" error means a URL is stuck in a redirect loop. Here's what causes it — http/https, www, Cloudflare — and how to fix it.

Sep 24, 20267 min readRead

How to Fix a 500 Internal Server Error

A 500 Internal Server Error means something broke on the server. Here's what an HTTP 500 means, what causes it (including WordPress), and how to fix it.

Sep 23, 20266 min readRead

How to Fix a 400 Bad Request Error

A 400 Bad Request error means your request was malformed — a bad URL, corrupted cookies, or oversized headers. Here's what it means and how to fix it.

Sep 21, 20268 min readRead

How to Fix a 429 Too Many Requests Error

A 429 Too Many Requests error means you've sent too many requests too quickly and hit a rate limit. Here's what it means, how the Retry-After header works, and how to fix it — whether you're calling an API or you run the server.

Sep 20, 20268 min readRead

How to Fix a 503 Service Unavailable Error

A 503 Service Unavailable means the server is up but temporarily can't handle the request — overloaded, in maintenance, or rate-limiting. Here's what it means, how it differs from 502 and 504, and how to fix it, including the WordPress maintenance case.

Sep 19, 20268 min readRead

How to Fix a 502 Bad Gateway Error

A 502 Bad Gateway means a gateway server (like nginx or Cloudflare) got an invalid response from the upstream server behind it. Here's what it means, how it differs from 504 and 503, and how to fix it — crashed upstreams, wrong proxy_pass, and PHP-FPM.

Sep 18, 20268 min readRead

How to Fix a 504 Gateway Timeout Error

A 504 Gateway Timeout means a gateway server (like nginx or a CDN) waited too long for an upstream server and gave up. Here's what it means, how it differs from 502 and 503, and how to fix it — including nginx upstream timeouts.

Sep 15, 20269 min readRead

How to Fix 403 Forbidden Errors in nginx

An nginx 403 Forbidden error means the server understood your request but is refusing to serve it. Here's how to read the nginx error log and fix each cause — permissions, missing index files, deny rules, alias paths, and SELinux.

DNS & Domains

DNS Record Types Explained (A, CNAME, MX, TXT & More)

A plain-English guide to every DNS record type — A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, and PTR — with real examples and how to look each one up for any domain.

Sep 10, 202610 min readRead

DNS & Domains

How to Fix DNS_PROBE_FINISHED_NXDOMAIN in Chrome

DNS_PROBE_FINISHED_NXDOMAIN means the domain you're visiting couldn't be found in DNS. Here's what the error means and how to fix it on Windows, Mac, Android — plus what to check if the site is yours.

Sep 9, 20268 min readRead

Sep 8, 20269 min readRead

How to Fix "unable to get local issuer certificate"

The "unable to get local issuer certificate" error means your client can't verify the SSL chain up to a trusted root. Here's what causes it and how to fix it in curl, Git, Node, Python — or on your own server.

DNS & Domains

DNS Server Not Responding? How to Fix It (Windows, Mac & Router)

"DNS server not responding" means your device can't reach the server that turns domain names into IP addresses. Here's what causes it and a step-by-step fix for Windows, Mac, phones, and site owners.

Sep 7, 20269 min readRead