Web Development

Web Development 11min read

2026-04-21

Compress and rename images for websites and blogs in one go! Mac app "TinyPress" has been released.

I have released "TinyPress," a Mac app that allows you to compress, convert, resize, and rename blog images all at once with a single drag and drop. It achieves up to a 97% reduction by converting to WebP and AVIF and operates completely offline.

Web Development 29min read

2026-04-18

Claude Opus 4.7 Released! The Arrival of Effort xhigh and a Glimpse of the Power of Mythos

Anthropic has released Claude Opus 4.7. We summarize the key points of its evolution, from the introduction of the new effort level "xhigh", significant improvements in coding and vision performance, and enhanced instruction following, to mentions of the higher-tier model Mythos Preview.

Web Development 18min read

2026-03-25

Let's Achieve "Working While You Sleep" with Claude Code's /schedule — A Thorough Explanation of the Differences with /loop

With the newly added /schedule command in Claude Code, you can automatically run tasks periodically in the cloud. We'll explain in detail how to have it handle PR reviews and documentation updates "while you sleep," including the differences from /loop.

Web Development 36min read

2026-02-19

Claude Sonnet 4.6 Released! Evolution from Sonnet 4.5 and the Power of "Best Cost-Performance" from an Engineer's Perspective

A review of Claude Sonnet 4.6, released on February 17, 2026, from an engineer's perspective. It delivers performance exceeding the previous generation's top-tier model, Opus 4.5, at the Sonnet price point. We explain how to differentiate its use from Opus 4.6 based on benchmark comparisons, the evolution of computer use, and product updates.

Web Development 39min read

2026-02-13

Postgres Best Practices for the AI Agent Era! Leverage "Agent Skills" Released by Supabase

By using "Agent Skills" released by Supabase, you can teach AI coding agents Postgres best practices. We introduce specific measures by priority, such as index design, RLS, and connection management.

Web Development 24min read

2026-01-20

Let's Encrypt Launches General Availability of "IP Address Certificates" and "Short-lived (approx. 6 days/160 hours) Certificates"! What's Changing?

On January 15, 2026, Let's Encrypt will launch general availability for IP address certificates and short-term (160-hour / approx. 6+ days) certificates. We provide an easy-to-understand explanation of the mechanisms, use cases, and points to note.

Web Development 13min read

2025-11-29

Tower: The Ultimate Git Client I've Settled on After Over 10 Years of Use

If you've ever felt intimidated by Git operations, Tower is well worth a try. Its appeal lies in the peace of mind of being able to undo even commits and merges with ⌘+Z, and the ease of performing advanced operations without hesitation via drag-and-drop. Having cycled through various tools, I'll share the honest reasons why I finally settled on Tower.