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Web engineer · WordPress · AI · Performance · Tooling

I’m Ivan.

I explore WordPress, AI, performance, and developer tooling to build better experiences on the web.

This site is my public notebook: deep technical tutorials, short notes, experiments, talks, and links from years of building for the web.

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Ivan Kristianto — Ivan · Jakarta · c. 2026

Exploring WordPress, AI, performance, and developer tooling.

FEATURED TOPICS

Where I spend my time on the web

WordPress 73 posts

Engineering notes from large-scale WordPress builds.

How I use LLMs day-to-day, and where they actually help.

Performance 16 posts

Real numbers from real sites — caching, queries, Core Web Vitals.

Web APIs 28 posts

Platform primitives — what's new, what's stable, what's worth using.

Tooling 173 posts

Editor setup, CLI scripts, CI tricks, things that compound.

THINGS I’VE BUILT

Projects

Allowealth

Active

Personal and family financial application.

TypeScript Astro Node.js

GitHub — Allowealth

Cloudflare API CLI

Active

Manage your Cloudflare accounts through a CLI interface.

Node.js JavaScript Cloudflare API

GitHub — Cloudflare API CLI

Zsh Dotfiles

Active

Opinionated ZSH settings.

Shell Zsh

GitHub — Zsh Dotfiles

WP Passkey

Active

Passwordless authentication for WordPress.

WordPress PHP JavaScript

GitHub — WP Passkey

LATEST NOTES · TIL · EXPERIMENTS · LINKS

What I’ve been working on

2026-10-28

Adding read-only WebMCP tools to my WordPress blog

How I added three read-only WebMCP tools to this WordPress blog, tested the JavaScript API, and found the assistant experience still uneven.
2026-10-26

How a split webfont slowed down my text layout, and how I fixed it

A font splitter put the letters i and j in a different file from the rest of the alphabet. Text layout got slower. Here’s why, and a script to check yours.
2026-10-06

Chrome Modern Web Guidance, What is it?

Notes to my future self on Chrome’s Modern Web Guidance skill: what it is, how to install it, and how it runs a small RAG over its guides with a local all-MiniLM model.
2026-07-19

How to code with AI agents

I use AI agents every day: not just to write code, but for research, brainstorming, planning, and user testing. I wrote an article on Human Made blog:

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