Downtime & Errors

Guide · Downtime & Errors503 Service Unavailable: What It Means and How to Fix It Step by StepDiagnose a 503 Service Unavailable error from overload, maintenance mode, exhausted workers or a dead backend, with fixes for WordPress, nginx, Apache and IIS.8 min read

Guide · Downtime & ErrorsAadhaar / UIDAI Portal Not Working: Checks and Safe WorkaroundsWhat to check when the UIDAI website, myAadhaar login or Aadhaar OTP fails, how to separate a portal problem from your own, and how to avoid scams.7 min read

Guide · Downtime & ErrorsCloudflare 520-526 Errors Explained: Meaning and Fixes for EachA code-by-code guide to Cloudflare 520, 521, 522, 523, 524, 525, 526 and 530 errors, with origin tests, SSL mode fixes and firewall rules that resolve them.10 min read

Guide · Downtime & ErrorsDigiLocker Not Working? Login, OTP and Document Fetch FixesTroubleshoot DigiLocker login, OTP, app crashes and documents that will not fetch, and learn how to tell a DigiLocker outage from a problem on your side.7 min read

Guide · Downtime & ErrorsERR_CONNECTION_REFUSED vs Timed Out vs Reset: What Each MeansUnderstand what ERR_CONNECTION_REFUSED, ERR_CONNECTION_TIMED_OUT and ERR_CONNECTION_RESET reveal about TCP, and how to diagnose each with nc, curl, ss and mtr.10 min read

Guide · Downtime & ErrorsFix 500 Internal Server Error: A Practical Guide for Site OwnersTrack down a 500 Internal Server Error with error logs, .htaccess and PHP checks, permission fixes and WordPress debugging, plus when your host must step in.9 min read

Guide · Downtime & ErrorsHow to Fix a 502 Bad Gateway Error (nginx, Apache, PHP-FPM, CDN)What a 502 Bad Gateway really means, how to find the failing upstream with logs and curl, and fixes for nginx, Apache, PHP-FPM, Node and Cloudflare setups.8 min read

Guide · Downtime & ErrorsHow to Fix a 504 Gateway Timeout: Causes, Logs and TimeoutsFind out why a proxy gave up waiting on your backend, how to spot slow queries and stuck workers, and which nginx, Apache, PHP and CDN timeouts to change.9 min read

Guide · Downtime & ErrorsHow to Tell Customers Your Website Is Down (With Copy-Paste Messages)A practical plan for small businesses: who to tell first, which channels to use when your site is down, and ready-to-paste messages for social, email, phone and chat.8 min read

Guide · Downtime & ErrorsIncome Tax Portal Not Working During ITR Filing: Fixes and Order of StepsWhat to do when the income tax e-filing portal is slow, shows errors, rejects OTP or fails to submit your ITR, with safe retry habits and scam warnings.7 min read

Guide · Downtime & ErrorsIs a Website Down for Everyone or Just Me? How to Check ProperlyLearn how to tell a real outage from a local problem using DNS, curl and outside vantage points, plus the fixes for DNS cache, VPN, ISP and browser causes.9 min read

Guide · Downtime & ErrorsWebsite Down? The First 15 Minutes Checklist for OwnersA calm, numbered checklist for the first 15 minutes after your website goes down: confirm it, find the layer that broke, check the usual suspects, and know when to escalate.7 min read

Guide · Downtime & ErrorsWhy Is My Website Down? 12 Causes and How to Diagnose EachA layer-by-layer method for finding why your website is down, with 12 common causes, the commands that expose each one, and when to escalate to your host.10 min read

Monitoring

Guide · MonitoringA Blameless Incident Postmortem Template With a Worked ExampleWrite a blameless incident postmortem that drives real fixes: timeline, root cause vs contributing factors, 5 whys limits, a copy-paste template and an example.10 min read

Guide · MonitoringAlert Fatigue and On-Call Basics for Small TeamsSet severity levels, escalation paths, alert thresholds and runbooks so a small team gets paged for real problems only and still sleeps through the night.8 min read

Guide · MonitoringCron Job Heartbeat Monitoring to Catch Silent Failures EarlyLearn how heartbeat monitoring catches silent cron failures, with copy-ready examples for crontab, systemd, GitHub Actions, Docker, WP-Cron, Laravel and more.9 min read

Guide · MonitoringDDoS Basics for Website Owners: Symptoms, Triage and ProtectionWhat a DDoS attack is, how to tell it from a legitimate traffic spike, and the basic defenses (CDN, WAF, rate limiting) plus what to tell your hosting provider.8 min read

Guide · MonitoringHow Often Should You Monitor a Website? Choosing Check IntervalsPick the right uptime check interval for each part of your site. See how interval, retries and alert delay combine into real detection time, and what to avoid.8 min read

Guide · MonitoringHow to Monitor API Endpoints: Status, JSON Checks, Latency and CronSet up reliable API monitoring: choose endpoints, validate status and JSON fields, handle auth headers safely, track latency and watch scheduled jobs.8 min read

Guide · MonitoringHow to Reduce False Alerts in Website Monitoring Without GapsStop false uptime alerts without losing real ones: confirmation checks, retries, timeouts, WAF blocks, keyword checks, maintenance windows and slow alerts.9 min read

Guide · MonitoringSet Up a Free Status Page for Your Small Business (Step by Step)Create a free public status page that shows customers whether your website is up, with plain steps for choosing components, connecting monitors and writing updates.7 min read

Guide · MonitoringSLA Uptime Calculation: Exclusions, Credits and How to Write OneHow hosting providers calculate SLA uptime, what exclusions and service credits mean in practice, and how agencies should word an SLA they can actually meet.7 min read

Guide · MonitoringStatus Page Message Templates: Incident and Maintenance ExamplesCopy-ready status page messages for investigating, identified, monitoring and resolved updates and planned maintenance, with tone rules and worked examples.8 min read

Guide · MonitoringSynthetic vs Real User Monitoring: Differences and When to Use EachCompare synthetic monitoring and real user monitoring (RUM), what each can and cannot see, when to use which, and how to get both with free options.8 min read

Guide · MonitoringUptime Monitoring for Small Business - What to Check First and WhyA practical plan for small businesses: what to monitor first, how to route alerts, a first-response runbook, budget options and checks not worth setting up.8 min read

Guide · MonitoringWebsite Maintenance Mode Done Right With 503 and Retry-AfterPut your site into maintenance mode correctly with a 503 and Retry-After. Examples for WordPress, Laravel, nginx and Apache, plus CDN caching and SEO pitfalls.8 min read

Guide · MonitoringWebsite Status Page Guide - What to Publish and How to Word UpdatesLearn what a good status page contains, how to structure components and word investigating, identified, monitoring and resolved updates, with templates.8 min read

Guide · MonitoringWhat 99.9% Uptime Really Means in Minutes, Hours and Days per YearA clear guide to uptime percentages with an exact downtime table for 99% to 99.999%, plus SLA vs SLO, measured vs reported uptime and check frequency.8 min read

WordPress

Guide · WordPressHacked WordPress Site Recovery: Detect, Clean Up and Lock It DownStep-by-step recovery for a hacked WordPress site: spot malware symptoms, contain it, restore from backups, reset credentials, clean files and database, then harden.8 min read

Guide · WordPressMove WordPress from HTTP to HTTPS: Complete SSL Migration GuideMigrate WordPress to HTTPS safely: install a certificate, update URLs with WP-CLI search-replace, fix mixed content, set 301 redirects and add HSTS.8 min read

Guide · WordPressWordPress "Allowed Memory Size Exhausted" Error: How to Raise the LimitFix the WordPress "Allowed memory size exhausted" fatal error by raising WP_MEMORY_LIMIT, php.ini, .user.ini or .htaccess limits and finding what uses the memory.8 min read

Guide · WordPressWordPress "Error Establishing a Database Connection": How to Fix ItFix the WordPress error establishing a database connection: check wp-config.php credentials, test MySQL, run repair mode with WP_ALLOW_REPAIR and spot host limits.8 min read

Guide · WordPressWordPress "Too Many Redirects" (ERR_TOO_MANY_REDIRECTS): How to Fix ItFix the WordPress redirect loop: check siteurl and home, HTTPS plugins, caching, .htaccess and nginx rules, and the Cloudflare Flexible SSL loop.7 min read

Guide · WordPressWordPress Email Not Sending: Fix Contact Forms, Resets and Order EmailsFix WordPress emails that never arrive or land in spam: PHP mail vs SMTP, wp_mail testing, SPF, DKIM and DMARC records, and how to debug delivery step by step.8 min read

Guide · WordPressWordPress Plugin Conflict Troubleshooting: A Safe Step-by-Step MethodFind the plugin or theme breaking your WordPress site: safe testing on staging, binary search, WP-CLI commands, renaming folders when locked out, and debug logs.8 min read

Guide · WordPressWordPress Security Hardening Checklist: 25 Practical StepsA practical WordPress hardening checklist: updates, strong logins and 2FA, file permissions, wp-config.php constants, security headers, backups and monitoring.7 min read

Guide · WordPressWordPress Slow Site Speed Checklist: Find and Fix the BottleneckA practical WordPress speed checklist covering hosting, TTFB, caching, images, plugins and database cleanup, with measurement tools and WP-CLI commands.8 min read

Guide · WordPressWordPress Stuck in Maintenance Mode: Delete .maintenance and Fix the UpdateFix "Briefly unavailable for scheduled maintenance": delete the .maintenance file, finish a failed core, plugin or theme update, and prevent it from happening again.8 min read

Guide · WordPressWordPress White Screen of Death: Causes and Step-by-Step FixesFix the WordPress white screen of death: turn on WP_DEBUG, find the failing plugin or theme, raise the memory limit, and check PHP version problems.7 min read

Guide · WordPressWP-Cron Explained: Fix Missed Schedules and Switch to a Real Cron JobHow WordPress WP-Cron works, why scheduled posts and tasks get missed, how to set DISABLE_WP_CRON with a real system cron, and how to monitor it with heartbeats.8 min read

E-commerce

Guide · E-commerceBlack Friday Website Readiness Checklist: 8 Weeks to Launch DayA dated checklist for getting an online store ready for Black Friday: capacity, caching, DNS, SSL, payments, monitoring, change freeze and rollback.7 min read

Guide · E-commerceDoes Website Downtime Hurt SEO? What Google Says About 503 and OutagesHow outages affect Google crawling and rankings, why a 503 with Retry-After is the right response, how short and long outages differ, and how to recover.8 min read

Guide · E-commerceE-commerce Order Email Deliverability: Why Confirmations Go MissingMake order confirmations and shipping emails reach inboxes: SPF, DKIM, DMARC, sender setup for Shopify and WooCommerce, testing, bounces and monitoring.7 min read

Guide · E-commerceE-commerce Site Security Checklist: 30 Checks for Online StoresA practical security checklist for online stores covering HTTPS, headers, payment pages, third-party scripts, admin access, updates, backups and monitoring.7 min read

Guide · E-commerceHow to Calculate the Cost of E-commerce Downtime (Formula and Example)A step-by-step method to estimate what an hour of downtime costs your online store, with a worked example using your own numbers, not industry averages.7 min read

Guide · E-commercePayment Gateway Downtime Monitoring: Checkout, Webhooks and HeartbeatsDetect payment failures before customers complain: checkout keyword checks, webhook endpoint monitoring, heartbeat monitors for payment events and alerts.8 min read

Guide · E-commerceShopify Custom Domain DNS Setup: A Record, CNAME and VerificationHow to point your own domain at Shopify with the right A record and www CNAME, verify the connection, pick a primary domain and avoid common DNS mistakes.7 min read

Guide · E-commerceShopify Redirects and URL Structure: Fixes, Limits and Best PracticesHow Shopify URLs are structured and how to create and bulk-import URL redirects, handle changed handles and deleted products, and avoid chains and 404s.7 min read

Guide · E-commerceShopify SSL Certificate Pending or Not Working: Causes and FixesWhy a Shopify domain shows SSL pending or a certificate warning, and a checklist of DNS, CAA, proxy and redirect problems to clear so the certificate issues.7 min read

Guide · E-commerceShopify Store Speed Optimization: What You Can Actually ControlA practical guide to speeding up a Shopify store: measure first, then fix apps, third-party scripts, images, fonts and theme code within Shopify limits.7 min read

Guide · E-commerceWooCommerce Checkout Errors: Troubleshooting Guide for Store OwnersDiagnose WooCommerce checkout failures step by step: caching, AJAX and REST errors, plugin conflicts, sessions, payment gateways, SSL and server limits.8 min read

Hosting & CDN

Guide · Hosting & CDNApache vs nginx Troubleshooting: Logs, Config Tests and Common ErrorsSide-by-side troubleshooting for Apache and nginx: where logs live, config test commands, restart vs reload, and fixes for the most common startup and runtime errors.8 min read

Guide · Hosting & CDNCDN Explained: What It Does, When You Need One, and How Caching WorksUnderstand how a content delivery network works, which headers control caching, what origin shield does, when a CDN helps or hurts, and how to verify it is working.7 min read

Guide · Hosting & CDNCloudflare Cache Rules and Purge: What Gets Cached and How to Clear ItHow Cloudflare decides what to cache, how to read cf-cache-status, build cache rules, set TTLs, and purge by URL, tag, prefix or everything without hurting performance.7 min read

Guide · Hosting & CDNCloudflare Setup: DNS Records, Proxy Status and SSL/TLS ModesSet up Cloudflare correctly: proxied vs DNS only records, what Off, Flexible, Full and Full (strict) SSL modes do, and how to choose the safe one for your site.7 min read

Guide · Hosting & CDNDocker Website Down? A Step-by-Step Troubleshooting ChecklistDiagnose a dockerized website that is down: container state, exit codes, published ports, healthchecks, logs, reverse proxy upstreams, OOM kills and full disks.9 min read

Guide · Hosting & CDNFix ERR_TOO_MANY_REDIRECTS on a Cloudflare SiteWhy Cloudflare sites hit redirect loops and how to fix them: Flexible SSL with an HTTPS-forcing origin, www rules, CMS URL settings, and conflicting redirect rules.7 min read

Guide · Hosting & CDNHosting in India vs Abroad: What It Means for Speed and UptimeShould your server be in India, Singapore, the US or Europe? How distance affects latency, when a CDN solves it, and how to measure your own audience.6 min read

Guide · Hosting & CDNHow to Change Nameservers Without Downtime (Step-by-Step)Switch DNS providers safely: copy the zone first, compare answers, handle DNSSEC and email records, change nameservers at the registrar, and verify with dig.8 min read

Guide · Hosting & CDNHow to Choose Web Hosting for Uptime: What to Check Before You BuyA practical checklist for evaluating hosts on reliability: reading the SLA fine print, support quality, backups, resource limits, and how to test a host before you commit.7 min read

Guide · Hosting & CDNHow to Find Out Who Hosts a Website (Step by Step, Free)Learn how to tell who hosts any website using free tools: IP address, nameservers, headers and CDN clues, and how to read confusing results like Cloudflare.7 min read

Guide · Hosting & CDNHow to Migrate a Website to a New Host Without DowntimeA step-by-step website migration plan: lower TTLs, build and test on the new server with a hosts file, cut over safely, protect email records, and keep a rollback path.8 min read

Guide · Hosting & CDNLoad Balancer Health Checks: Endpoints, Thresholds and Connection DrainingDesign load balancer health checks that remove bad servers quickly without flapping: health endpoint design, intervals and thresholds, HAProxy and nginx examples, and draining.8 min read

Guide · Hosting & CDNnginx 502 and 504 Errors: Timeout, Buffer and Keepalive TuningTune nginx for 502 and 504 errors with the right directives: proxy_read_timeout, fastcgi_read_timeout, buffer sizes, upstream keepalive, and how to read the error log.8 min read

Guide · Hosting & CDNVPS vs Shared Hosting: Which Is More Reliable for Your Website?Compare shared hosting and VPS on reliability: resource isolation, noisy neighbors, failure modes, who maintains what, and when moving to a VPS actually reduces downtime.7 min read

DNS & Domains

Guide · DNS & DomainsCNAME at the Apex Domain: Why It Fails and How Flattening Fixes ItWhy you cannot put a CNAME on your root domain, and how ALIAS, ANAME and CNAME flattening work, with provider examples, trade-offs and verification commands.8 min read

Guide · DNS & DomainsDNS Explained for Website Owners: Records, TTL and Safe ChangesLearn what each DNS record type does, how resolvers and authoritative servers differ, and how to change records safely with a lowered TTL and dig checks.9 min read

Guide · DNS & DomainsDNS Records Cheat Sheet: A, AAAA, CNAME, MX, TXT, NS, CAAA practical DNS records reference: table of A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV and PTR with zone-file examples, dig commands and common mistakes.8 min read

Guide · DNS & DomainsDNS TTL Explained: Values, Caching and Planning DNS ChangesWhat DNS TTL means, how resolvers cache records, typical TTL values, and a step-by-step plan for lowering TTL before migrations so changes take effect fast.8 min read

Guide · DNS & DomainsDNSSEC Explained: Chain of Trust, DS Records and Safe DeploymentUnderstand how DNSSEC signs DNS answers, what DNSKEY, DS and RRSIG records do, why misconfiguration causes SERVFAIL, and how to enable it or roll keys safely.9 min read

Guide · DNS & DomainsDomain Expiry, Grace and Redemption Periods: Protect Your DomainUnderstand the domain lifecycle from active to pending delete, why grace and redemption lengths vary by TLD and registrar, and how to avoid losing a domain.9 min read

Guide · DNS & DomainsExpired Domain Recovery: Get Your Domain and Website BackA practical plan for recovering an expired domain: identify the stage, renew or redeem it, restore DNS, email and SSL, and prevent a repeat.8 min read

Guide · DNS & DomainsHow Long Does DNS Propagation Take? What Actually Controls ItDNS changes are not pushed across the internet. Learn how caches, TTL and negative caching decide when you see an update, and how to verify with dig.8 min read

Guide · DNS & DomainsHow to Change DNS on Indian ISPs and Routers (Jio, Airtel, BSNL)Step-by-step DNS changes for Windows, macOS, Android, iPhone and home routers on Indian broadband, plus how to test the change and roll it back safely.7 min read

Guide · DNS & DomainsHow to Check Domain Expiry Date and Owner (WHOIS, Step by Step)Find out when a domain expires, who registered it and which company manages it. Includes how to read WHOIS results and what to do when the owner is hidden.7 min read

Guide · DNS & DomainsHow to Transfer a Domain Between Registrars Without DowntimeStep-by-step domain transfer guide: unlock, auth/EPP code, the 60-day rule, WHOIS and DNS continuity, timelines, common blockers and how to avoid downtime.8 min read

Guide · DNS & DomainsSubdomain Takeover and Dangling DNS: How to Find and Fix ThemDangling CNAME and A records can let attackers claim your subdomains. Learn how takeovers work, how to audit your DNS, and how to prevent them with policy.9 min read

Guide · DNS & DomainsWebsite Blocked in India or Just Down? How to Tell the DifferenceLearn how ISP-level DNS, IP and SNI blocking differ from a real outage, which signs to look for, and how to diagnose with our tools without bypassing the law.7 min read

Email

Guide · EmailBIMI Explained: Show Your Logo in the Inbox (Requirements and Setup)What BIMI is, what it requires (DMARC enforcement, SVG Tiny PS logo, VMC or CMC certificate), how the DNS record looks, and which mailbox providers display it.6 min read

Guide · EmailCheck Your Email Domain Setup (MX, SPF, DKIM, DMARC) in 15 MinutesA beginner's walkthrough to check that your business email domain has the right MX, SPF, DKIM and DMARC records, with free tools and plain-language fixes.7 min read

Guide · EmailDKIM Setup and Troubleshooting: Selectors, Key Length, RotationHow DKIM selectors and keys work, how to publish and test a record, choose key length, rotate safely, and diagnose the common reasons dkim=fail shows up.7 min read

Guide · EmailDMARC Rollout: From p=none to quarantine to reject, SafelyA staged DMARC rollout plan: publish p=none, read rua reports, fix alignment, ramp pct, set a subdomain policy with sp=, and reach p=reject without losing mail.7 min read

Guide · EmailEmail Blacklist Removal Guide: Find the Cause, Get Delisted, Stay CleanLearn how DNS blocklists work, how to check IP and domain listings, fix the root cause first, request delisting, and prevent repeat listings on your mail server.8 min read

Guide · EmailEmail Bounce Codes Explained: 4xx vs 5xx and Enhanced Codes (5.1.1, 5.7.1)Decode SMTP reply codes and enhanced status codes in bounce messages: temporary 4xx versus permanent 5xx, what 5.1.1, 5.7.1, 5.4.1 and others mean, and what to fix.7 min read

Guide · EmailEmail Going to Spam? A Step-by-Step Diagnostic ChecklistWork through authentication, blocklists, reverse DNS, sending reputation and content to find out why your email lands in spam, and what to fix first.6 min read

Guide · EmailFix SPF "Too Many DNS Lookups" (Permerror): Count, Trim and FlattenYour SPF record can only trigger 10 DNS lookups. Learn what counts, how to count them, and how to fix a permerror by pruning, splitting and flattening.8 min read

Guide · EmailGoogle Workspace DNS Records: MX, SPF, DKIM and DMARC SetupThe DNS records a Google Workspace domain needs for working, authenticated email: MX, SPF include, DKIM key, DMARC, and how to verify each one.6 min read

Guide · EmailMicrosoft 365 DNS Records: MX, SPF, Autodiscover, DKIM and DMARCThe DNS records Microsoft 365 and Exchange Online need for mail flow and authentication: MX token, SPF include, Autodiscover, DKIM CNAMEs and DMARC.6 min read

Guide · EmailMTA-STS and TLS-RPT Guide: Enforce TLS for Inbound EmailHow to set up MTA-STS and TLS-RPT: the DNS TXT records, the policy file on mta-sts.example.com, testing, enforce mode, and how to read TLS reports.6 min read

Guide · EmailMX Records Explained: Priority, Backup Servers and Null MXWhat MX records do, how priority works, why backup MX servers are risky, the rules for targets, and how to publish a null MX for domains that never receive mail.7 min read

Guide · EmailReverse DNS (PTR) for Email: Why It Matters and How to Set It UpHow PTR records and forward-confirmed reverse DNS affect email delivery, how to check them with dig, and how to set matching rDNS, HELO and A records.6 min read

Guide · EmailSPF, DKIM and DMARC Explained: A Complete Setup and Rollout GuideSet up SPF, DKIM and DMARC correctly, understand alignment, move safely from p=none to reject, and read reports without breaking legitimate mail.8 min read

Guide · EmailTransactional Email DNS Checklist: Subdomain, Return-Path, DKIM, TrackingThe DNS setup for sending transactional email through a provider: a dedicated subdomain, return-path CNAME, DKIM, SPF, DMARC alignment and a tracking domain.7 min read

Guide · EmailWarming Up a New Email Domain or IP: An Honest GuideHow to build sending reputation for a new domain or IP: set up authentication first, start small with engaged recipients, ramp gradually, and what warm-up services can and cannot do.6 min read

SSL & Security

Guide · SSL & SecurityContent Security Policy (CSP) Guide: Directives, Nonces, RolloutBuild a Content Security Policy that works: key directives, nonces and strict-dynamic, Report-Only rollout, violation reports, and fixes for common breakage.7 min read

Guide · SSL & SecurityCookie Flags Explained: Secure, HttpOnly and SameSiteWhat the Secure, HttpOnly, SameSite, Domain, Path and cookie prefix attributes do, how to set them in common stacks, and how to debug cookies that go missing.7 min read

Guide · SSL & SecurityHow to Check an SSL Certificate Expiry Date (3 Easy Ways)Find out when your SSL certificate expires using a free online checker, your browser, or one command, and learn what to do if the date is close or has passed.7 min read

Guide · SSL & SecurityHow to Renew an SSL Certificate and Automate It for GoodLearn the certificate lifecycle, automate renewals with certbot, Caddy or acme.sh, add reload hooks, test with a dry run and monitor expiry before users notice.9 min read

Guide · SSL & SecurityHSTS Preload Guide: Requirements, Risks and How to SubmitLearn what the HSTS preload list is, the exact requirements, the risks of includeSubDomains, how to submit your domain safely, and why removal takes months.7 min read

Guide · SSL & SecurityHTTP Security Headers Guide: HSTS, CSP, Referrer-Policy and MoreA practical guide to HSTS, CSP, X-Content-Type-Options, frame-ancestors, Referrer-Policy and Permissions-Policy, with nginx, Apache and Express examples.8 min read

Guide · SSL & SecurityLet's Encrypt Renewal Failures: Certbot Debugging GuideWhy certbot renewals fail and how to fix them: http-01 and dns-01 challenges, firewalls, redirects, rate limits, timers, and the exact debug commands.8 min read

Guide · SSL & SecurityMixed Content Warnings: How to Find and Fix HTTP Resources on HTTPSUnderstand active vs passive mixed content, hunt down http:// references in HTML, CSS, JS and databases, fix them with wp-cli or CSP, and verify the result.8 min read

Guide · SSL & SecuritySSL Certificate Types Explained: DV, OV, EV, Wildcard and SANCompare DV, OV and EV certificates, wildcard and multi-domain (SAN) options, and learn what certificate lifetimes really are today and where they are heading.7 min read

Guide · SSL & SecuritySSL/TLS Certificate Errors Explained: Causes, Diagnosis and FixesDecode browser errors like ERR_CERT_COMMON_NAME_INVALID and ERR_CERT_AUTHORITY_INVALID, diagnose them with openssl and curl, and fix each root cause.10 min read

Performance

Guide · PerformanceCore Web Vitals Guide: Improve LCP, INP and CLS Step by StepLearn what LCP, INP and CLS measure, how lab and field data differ, and the practical fixes for images, fonts, JavaScript and layout shifts.9 min read

Guide · PerformanceHow to Check Your Website Speed for Free (and What to Fix First)Test your website speed with free tools, understand the numbers in plain language, and fix the biggest problems first: images, hosting, scripts and caching.7 min read

Guide · PerformanceHow to Reduce Time to First Byte (TTFB): Measure and Fix ItBreak TTFB into DNS, connect, TLS and server time, measure each with a ready curl format string, then cut it with caching, query tuning and a CDN.9 min read

Guide · PerformanceHTTP/2 and HTTP/3 Explained: What Changes and How to Enable ThemUnderstand multiplexing, QUIC and head-of-line blocking, when HTTP/2 and HTTP/3 actually help, and how to enable and verify them on nginx and Cloudflare.7 min read

Guide · PerformanceImage Optimization Guide: WebP, AVIF, Sizing, srcset, Lazy LoadingChoose between JPEG, PNG, WebP and AVIF, size images correctly, use srcset and lazy loading, and batch convert with cwebp, avifenc and sharp.6 min read

Guide · PerformanceWhy Is My Website Slow? A Step-by-Step Diagnosis FlowchartWork through DNS, connect, TLS, TTFB, download and render in order to find which stage makes your site slow, with the right tool and command for each.8 min read

Web Basics

Guide · Web BasicsHow to Read HTTP Headers for Beginners (What Each Line Tells You)Learn to view and read HTTP response headers with a free tool or curl, and what status, server, cache, redirect and security headers mean for your website.7 min read

Guide · Web BasicsHTTP Redirects Explained: 301, 302, 307, 308 and Fixing LoopsChoose between 301, 302, 307 and 308, canonicalize http, https and www, avoid chains and loops, and test every hop with curl. With nginx and Apache examples.8 min read

Guide · Web BasicsJio or Airtel Broadband: Some Websites Not Opening? Fix ItInternet works but one site will not open on Jio, Airtel or another Indian ISP? Learn how to tell a DNS, IPv6, router or site problem and fix each.6 min read

Guide · Web Basicsrobots.txt and XML Sitemap Guide: Syntax, Limits and MistakesWrite a correct robots.txt, understand Allow and Disallow precedence, noindex versus disallow, and build XML sitemaps within the 50,000 URL and 50 MB limits.8 min read

Guide · Web BasicsWebsite Owner Monthly Health Checklist (30 Minutes, Free Tools)A 30-minute monthly routine for small-business website owners: check uptime, SSL, domain, DNS, email, speed, backups and links with free tools and clear steps.7 min read

Guide · Web BasicsWhy Government Websites Slow Down at Deadlines (and How to Cope)Why busy-season traffic overwhelms tax, booking and ID portals, what is happening behind the error pages, and practical habits that reduce failed attempts.7 min read