TLDR DEV 2026-06-22

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JSON-LD EXPLAINED FOR PERSONAL WEBSITES

JSON-LD is a structured data format that helps web crawlers understand the semantic structure of webpages, potentially leading to richer search previews and improved SEO. To implement JSON-LD, users can insert specific scripts within the head section of their HTML, defining elements such as the website, its owner, and various page types.

I STORED A WEBSITE IN A FAVICON

A favicon, typically serving as a small icon for a website, can function as a storage medium for data by embedding HTML content within its pixel values. This process involves converting the HTML into bytes and encoding them into the RGB channels of the favicon, allowing the browser to extract the information using JavaScript.

BUILDING RELIABLE AGENTIC AI SYSTEMS

The Preclinical Information Center (PRINCE) is a cloud-based platform developed to improve drug development in the pharmaceutical industry by integrating decades of safety study data through RAG and Text-to-SQL. It transforms traditional keyword-based searches into an intelligent assistant capable of handling complex queries and drafting regulatory documents.

THERE IS MINIMAL DOWNSIDE TO SWITCHING TO OPEN MODELS

Switching to open models has become less risky due to improvements in Linux, web applications, and open-source software. Although proprietary models still dominate in performance and usability, recent advancements in open models have narrowed the gap.

HEY, N00B, WE DIDN'T HIRE YOU TO COMPLETE TASKS

Completing tasks is less important than demonstrating your growth and contribution as a developer. Signals of higher performance include delivering quality work, effective communication, and continuous learning, rather than just finishing multiple tasks quickly.

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RECALL

Recall is a local memory plugin for Claude Code that captures and summarizes session activities offline. It generates concise project summaries without requiring external servers or API keys.

LOUPE

Loupe is an iOS and iPadOS app designed to showcase the device fingerprinting capabilities of mobile devices by displaying real values from public iOS APIs. It categorizes the data it retrieves into three tiers based on accessibility: passive signals available to any app, signals that require user permission, and advanced signals through clever API usage.

TEMPORARY CLOUDFLARE ACCOUNTS FOR AI AGENTS

Temporary Cloudflare Accounts have been introduced for easier deployments for AI agents, removing the need for human sign-up processes that typically involve browser-based authentication and multi-factor prompts. Agents can now use the new `--temporary` flag with Wrangler to deploy projects quickly without prior account setup.

THE MINIMUM VIABLE UNIT OF SALEABLE SOFTWARE

The decision to build or buy software has changed, as LLMs allow for cheaper software development but still involve maintenance and oversight costs. A “zone of viability" is introduced where software must strike a balance between cost and complexity. It is more practical to buy software than to build it when prices are reasonable and rebuilding efforts are substantial.

TEN YEARS OF CLICKHOUSE IN OPEN SOURCE

ClickHouse, an open-source analytical database, has gained popularity over the past decade since its release in 2016, attracting over 2000 contributors. With a focus on modularity and accessibility, it serves as a resource for engineers to learn C++ and experiment with database optimization techniques. It has transformed from a private project to a widely adopted tool across various industries, successfully filling a niche for high-performance data analytics.

PLOY RAISES $27M TO TURN YOUR COMPANY'S WEBSITE INTO YOUR HARDEST WORKING EMPLOYEE

Ploy is an all-in-one marketing platform that automates website management and operations, allowing founders, agencies, and marketing teams to efficiently translate ideas into executed campaigns without the typical overhead.

WHEN I REJECT AI CODE EVEN IF IT WORKS

Despite the advantages of AI in coding, many engineers reject AI-generated code when they struggle to understand it, find its solutions overly complex, or realize it doesn't align with good engineering principles.

DEVELOPERS DON'T UNDERSTAND CORS

Many web devs don't have a clear understanding of CORS, leading to security vulnerabilities, as shown by Zoom's use of a localhost web server that bypasses CORS protections.

ASK FOR NO, DON'T ASK FOR YES

Instead of seeking permission for new initiatives at work, confidently present your plans with a deadline for feedback, allowing for progress while still keeping your supervisor informed.