WCAG: Making the internet more accessible
DEV Community • 2026-04-20 20:31

WCAG: Making the internet more accessible

We at Centro Labs recently finished making LocalMate WCAG 2.2 Level AA Compliant. It's not something that shows up on a demo reel or has any flashy consequences, but it's one of the more meaningful things we have shipped. Here's how we did it and what we found out while doing it. What WCAG actually is The Web Content Accessibility Guidelines (or just WCAG) are international standards d...

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Can Claude Code migrate VanillaJS/HTML/CSS to Preact/Tailwind?
DEV Community • 2026-04-20 20:29

Can Claude Code migrate VanillaJS/HTML/CSS to Preact/Tailwind?

In my last post, I introduced LinkedIn Secret Weapon, the Chrome Extension I built with Claude Code to supercharge my LinkedIn workflow. As I mentioned, the app was built almost entirely with Claude Code – I had no background or knowledge about building browser extensions. I just wanted the tool, and AI built it, and it worked! But now I want to work on expanding it, adding a backend to store the...

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Hacker News • 2026-04-20 20:29

Show HN: GeoFastMapAPI – open-source Fast vector and raster server for mapmakers

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Hacker News • 2026-04-20 20:25

Show HN: A tiny macOS app that clears app caches and NPM/Docker/Xcode junk

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Hacker News • 2026-04-20 20:22

Show HN: Simple CLI tool to convert PDFs to dark mode, with TOC preservation

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DEV Community • 2026-04-20 20:20

Fast & Accurate Prompt Injection Detection API

This prompt injection detection API powers the security layer of ZooClaw, an AI agent platform that deploys teams of specialized agents to handle everyday tasks autonomously. Unlike single-purpose chatbots, ZooClaw agents browse the web, execute code, call third-party APIs, and orchestrate multi-step workflows on behalf of users — making them a high-value target for prompt injection attacks. Every...

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Hacker News: Front Page • 2026-04-20 20:19

AI Resistance Is Growing

Article URL: https://stephvee.ca/blog/artificial%20intelligence/ai-resistance-is-growing/ Comments URL: https://news.ycombinator.com/item?id=47839951 Points: 22 # Comments: 0

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DEV Community • 2026-04-20 20:18

How I automated dead endpoint detection and removed 16,000 lines from our Node.js codebase

Eight years of product iterations leaves marks. Our Express API had grown to 45,000 lines of code across hundreds of endpoints — features that shipped, features that didn't, integrations that were replaced, experiments that were abandoned. Nobody knew exactly what was still being used. Static analysis wasn't the answer. Tools like ESLint can tell you what's unreachable at the code level, but they...

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DEV Community • 2026-04-20 20:18

ClickHouse Native JSON Support in 2026: A PR-by-PR Analysis

TL;DR ClickHouse has full native JSON support, and has since v25.3. The JSON type stores each path as a separate columnar subcolumn with native type preservation, primary key indexing, and selective path reads. It is 2,500x faster than MongoDB for aggregations on the JSONBench 1-billion-document benchmark. The narrative that "ClickHouse can't do JSON" is outdated by two years and 80+ me...

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Building a Pipeline to Study War Coverage Using GDELT
HackerNoon • 2026-04-20 20:17

Building a Pipeline to Study War Coverage Using GDELT

I built a Python pipeline to measure how global media framed the Beirut strikes (April 8, 2026). Using the GDELT DOC API, I collected 528 headlines, cleaned them down to 113 verified articles, and manually classified each one in 40 minutes. Result: 73.5% political and military framing, 26.5% human impact, and displacement in just 1.8% of coverage. Three scripts, two dependencies, fully reproducibl...

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DEV Community • 2026-04-20 20:16

Factur-X EN 16931 from scratch: PDF/A-3 + CII XML in Node.js / TypeScript

France's e-invoicing reform kicks in September 1st 2026. Germany's has been live since 2025. By 2027, every B2B invoice in the EU will be structured. Yet the amount of bad documentation around Factur-X — the hybrid PDF+XML format mandated in France and widely used in DACH — is impressive. Most "tutorials" either point you at a €5k commercial SDK or wave hands at 200 pages of XML schema. This post...

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DEV Community • 2026-04-20 20:15

Why LLM Outputs Fail in Production-and How to Fix It

Straight Answer DeepSeek is censored. That's not news - it's a state-backed model with hardcoded content restrictions. But fixating on censorship misses the real problem. Censorship is just the most visible case of a model doing something you didn't ask for and can't verify. The actual risk is structural: if you're building production systems on LLM outputs without validation, schema enforcemen...

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DEV Community • 2026-04-20 20:15

Germany's Public Attribution of 'UNKN' Raises Questions About Intelligence Use, Not Criminal Disruption

Germany Named UNKN. No Arrest Followed. That Is the Problem. German authorities publicly attributed the alias 'UNKN' to leadership roles in the REvil and GandCrab ransomware operations. No arrest was executed. No infrastructure was seized. No indictment was unsealed. Public attribution without enforcement is not a disruption operation. It is a warning shot - fired at an adversary who n...

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DEV Community • 2026-04-20 20:11

TypeOrm Unit Of Work

Small TypeOrm Persist Thread implement unit of work like a lot of modern ORMs for type-orm. Benefits : It optimize the persist flow by grouping orders in single request resulting in less db load and faster response You can use multi connections persist if your persist is not a transaction It push you orders in a persist stack that you can flush in one time then even with no transation if your p...

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¿Qué es un Modelo de IA? Explicado de manera sencilla
DEV Community • 2026-04-20 20:10

¿Qué es un Modelo de IA? Explicado de manera sencilla

La mayoría de nosotros ha utilizado chats de IA en los últimos años en su día a día. Sin importar si eres estudiante o profesional, son herramientas que se han enraizado en nuestras vidas. Pero, ¿sabes exactamente qué hay detrás? ¿Cómo es que funcionan realmente? No es magia, en realidad es pura estadística. Detrás de cada chat de IA, cada traductor automático y cada asistente de código, hay algo...

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DEV Community • 2026-04-20 20:09

OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams

Forensic Summary OpenAI has launched GPT-5.4-Cyber, a cybersecurity-optimised model variant, alongside an expanded Trusted Access for Cyber (TAC) programme targeting authenticated defenders and security teams. While the initiative is framed as a defensive measure, the dual-use nature of a vulnerability-detection model introduces significant risk of adversarial inversion — where threat a...

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Hacker News: Front Page • 2026-04-20 20:07

F-35 is a masterpiece built for the wrong war

Article URL: https://warontherocks.com/cogs-of-war/the-f-35-is-a-masterpiece-built-for-the-wrong-war/ Comments URL: https://news.ycombinator.com/item?id=47839835 Points: 7 # Comments: 2

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We've open-sourced our AI security scanner: it found 221 issues
DEV Community • 2026-04-20 20:02

We've open-sourced our AI security scanner: it found 221 issues

Recently, mentions of Mythos from Anthropic leaked online - a model that found vulnerabilities even in OpenBSD. We thought this was a great moment to share our own developments in code quality analysis and show the underestimated scale of the problem in product development. Besides security bugs that lead to leaks of private data or loss of control over a system, there is another strongly underes...

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DEV Community • 2026-04-20 20:01

How to Stop Your AI Agent from Hallucinating Facts

My AI co-founder published a tweet last year claiming Xero had "over 2,000 newsletter subscribers." At the time, we had 47. Not a catastrophic error. Nobody called it out publicly. But it was the kind of confident, plausible-sounding mistake that could have landed in a sales email, a pitch, or a press mention. That was the moment I stopped treating hallucinations as a model problem and started t...

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DEV Community • 2026-04-20 20:01

AI-Assisted Development: How I Ship Production Code Without a CS Degree

Originally published on AIdeazz — cross-posted here with canonical link. Six months ago, I was debugging a TypeScript type error at 2 AM, wondering if my non-traditional path into development would finally catch up with me. I'd just deployed a multi-agent system that routes between Groq and Claude APIs, handles WhatsApp and Telegram messages, and manages Oracle Cloud infrastructure. The system wo...

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