Tutorial2 min read
SPF, DKIM, and DMARC So Your Site Email Is Not Spam
Why mail from a new business domain lands in spam, and the DNS records I add so contact forms and invoices reach the inbox.
EmailDNSSPF
Read article →Notes & insights
Blog
Personal testimonies and notes on faith, life experience, web development, performance, and technical leadership.
SEO2 min read
Keep a Staging Website Out of Google
How a staging or dev copy gets indexed, and the noindex, password, and robots checks I use so it does not compete with the real site.
StagingSEOnoindex
Read article →Web Development2 min read
Shared Hosting or a VPS for a Business Website
How I choose between shared hosting and a VPS for client sites: traffic, WordPress weight, email, backups, and who will actually maintain the server.
HostingVPSWordPress
Read article →Tutorial2 min read
Install Google Analytics 4 on a Business Website
A practical GA4 setup for a client site: one property, the right stream, a tag that does not block the page, and the few events worth keeping.
Google AnalyticsGA4Measurement
Read article →SEO3 min read
301 Redirects When a URL Changes
How to map old URLs to new ones with a 301 so bookmarks, ads, and Google do not land on a 404 after a redesign or permalink change.
RedirectSEOWordPress
Read article →Tutorial2 min read
Stop Contact Form Spam Without Killing Real Inquiries
How I reduce contact-form spam on client sites: honeypots, time checks, and rate limits—before a captcha that scares mobile users away.
FormsSpamWordPress
Read article →Web Development2 min read
Which WordPress Plugins to Remove When the Site Feels Slow
A practical way to find plugins that slow WordPress: overlapping SEO, sliders, chat widgets, and backup jobs that run on every page view.
WordPressPluginsPerformance
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SEO2 min read
Local SEO for Service Businesses: Pages, NAP, and Google Business Profile
The local SEO work I do for service businesses: a clear service page, consistent NAP, Google Business Profile, and a mobile inquiry path.
Local SEOGoogle Business ProfileLead Generation
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Web Development2 min read
Minimum Accessibility for a Business Website
The accessibility checks I finish before handover: contrast, form labels, alt text, headings, keyboard focus, and touch targets on mobile.
AccessibilitySEOUX
Read article →SEO2 min read
Hreflang for a Bilingual Website (English and Indonesian)
How to mark English and Indonesian pages with hreflang so Google does not treat them as duplicates, including canonical and x-default rules.
hreflangi18nSEO
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Tutorial2 min read
Client Website Backups You Can Actually Restore
A client-site backup that helps during an incident: files, database, DNS notes, a restore test on staging, and a habit before plugin updates.
BackupWordPressHosting
Read article →Tutorial2 min read
Security Headers I Enable on Client Websites
A practical set of HTTP security headers for business sites: HTTPS, HSTS, nosniff, frame options, referrer policy, and what to skip on day one.
SecurityHeadersHTTPS
Read article →SEO2 min read
Google Search Console for a New Business Website
How to verify a new site in Google Search Console, submit a sitemap, and read the first indexing signals before you spend on ads.
Search ConsoleSEOSitemap
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Web Development2 min read
Hotel IPTV and Digital Signage: What to Agree Before the Project Starts
Scope decisions for in-room IPTV and lobby digital signage: TV brands, remotes, the CMS, content, the network, and who operates the screens after go-live.
IPTVDigital SignageHospitality
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Tutorial3 min read
Cleaning a Hacked WordPress Site: The Order I Follow Before Calling It Safe
The cleanup order I use on a hacked WordPress site: isolate it, rotate credentials, replace core and plugins from official sources, then verify Search Console.
WordPressSecurityMalware
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Tutorial2 min read
Website Migration Without Downtime: DNS, Staging, and Cutover
A practical zero-downtime migration checklist for WordPress and custom sites: staging sync, DNS TTL, SSL, redirects, search-replace, and post-cutover verification.
MigrationDNSWordPress
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Web Development2 min read
Slow Website? Fix TTFB and Hosting Before More Plugins
Why Time to First Byte kills PageSpeed on Indonesian sites, how to measure TTFB, and what to change in hosting, PHP, caching, and CDN before frontend micro-optimizations.
TTFBHostingPerformance
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SEO2 min read
JSON-LD Schema for Business Websites: What Actually Helps SEO
A practical guide to schema markup for Indonesian business sites: Organization, LocalBusiness, FAQ, Article, and how to validate JSON-LD without overdoing it.
SchemaJSON-LDSEO
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Web Development3 min read
Image Optimization for PageSpeed: WebP, Sizes, and Lazy Loading
How to fix heavy images that kill mobile PageSpeed: WebP/AVIF, responsive sizes, compression, lazy loading, and LCP hero rules for WordPress and custom sites.
PageSpeedWebPImages
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Tutorial3 min read
Website Launch Checklist for Client Projects
A practical go-live checklist for business websites: DNS, SSL, redirects, analytics, forms, backups, and PageSpeed checks before handing a project to the client.
Website LaunchChecklistClient Delivery
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Tutorial4 min read
Cloudflare for Client Websites: Speed, Security, and DNS in One Place
A practical Cloudflare setup guide for business sites: DNS, SSL, caching, WAF basics, and the settings I enable before go-live on client projects.
CloudflareDevOpsPerformance
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Web Development4 min read
From WordPress to Astro: Why I Rebuilt jemmymongi.com as a Static Site
Lessons from migrating a personal WordPress blog to Astro: faster loads, simpler hosting, bilingual routing, and what to keep from the old CMS workflow.
AstroWordPressStatic Site
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Case Study4 min read
KusenKaca.com Case Study: A Lead-Gen Website for Aluminium & Glass Services
Case study of kusenkaca.com: building an aluminium and glass service site focused on mobile conversion, project credibility, and local service SEO.
Case StudyLead GenerationConstruction Website
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Case Study4 min read
SLA Nusra Case Study: A School Website Built for Slow Internet and Mobile Users
Case study of slanusra.sch.id: building a school website for limited connectivity—mobile-first, lightweight pages, and fast access on slow networks.
Case StudySchool WebsitePerformance
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Case Study6 min read
VACS Online Case Study: From Downtime and Malware to a Fast, Stable School Site
Case study of vacsonline.org: a school website that was frequently down, hard to access, and malware-infected—then rebuilt for security, uptime, and speed.
Case StudyMalware CleanupPerformance
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Tutorial2 min read
How to Improve Google PageSpeed and Core Web Vitals
A practical guide to raising PageSpeed scores: LCP, INP, CLS, image strategy, caching, and high-impact fixes first.
PageSpeedCore Web VitalsPerformance
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Notes1 min read
Welcome to Jemmy Mongi’s Blog
Notes on web development, performance, technical leadership, and delivering reliable digital products.
Web DevelopmentEngineeringPersonal
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Tutorial2 min read
WordPress Optimization Checklist for Performance and SEO
A practical WordPress checklist covering plugins, themes, caching, images, database hygiene, and technical SEO without making the site hard to maintain.
WordPressPerformanceSEO
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Tutorial2 min read
Building Secure and Maintainable CodeIgniter REST APIs
Practical CodeIgniter REST API patterns: endpoint design, authentication, input validation, consistent errors, and baseline performance.
CodeIgniterPHPREST API
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SEO3 min read
Technical SEO for Developers: A Checklist That Actually Gets Used
A developer-focused technical SEO guide covering titles, canonicals, headings, sitemaps, Core Web Vitals, schema, and common ranking-hurting mistakes.
SEOTechnical SEOSchema
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Web Development3 min read
Laravel vs CodeIgniter: When to Choose Which for Client Projects
A practical Laravel vs CodeIgniter comparison for client work: delivery speed, complexity, team fit, maintenance cost, and a clear decision checklist.
LaravelCodeIgniterPHP
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