DEV Community • 2026-04-23 06:21

I built 20 free PDF tools — no sign-up, no watermarks

I got frustrated with PDF tools that force you to create an account just to merge two files. So I built TryMyPdf — 20 completely free PDF tools. What it does Merge PDF Compress PDF Split PDF Word to PDF / PDF to Word JPG to PDF / PDF to JPG Rotate, Watermark, Protect, Unlock Add Page Numbers, Header & Footer PDF to Excel, PDF to PowerPoint And more... Why I built it ...

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1m read
DEV Community • 2026-04-23 06:18

How to Integrate Claude with n8n to Build AI Workflows

Real-world data is messy. Messages are unstructured. User intent is not always clear. And that’s where traditional automation breaks down. To move beyond this limitation, workflows need the ability to interpret, decide, and act dynamically. This is where integrating Claude with n8n becomes useful. In this guide, you will learn how to connect Claude to n8n and build an AI-powered workflow that c...

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3m read
DEV Community • 2026-04-23 06:16

Redes Neuronales Convolucionales - Clasificacione de imagenes Landmarks

Clasificación de imagenes con Redes Neuronales Convolucionales En este video explicare el pipeline de como entrenar un modelo de red neuronal usando Convolutional Neural Network (CNN). Si quieren ponerlo a prueba o seguir el pipeline de entrenamiento lo pueden ver en mi Github.

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1m read
Beyond the vSphere Horizon: A Verifiable Framework for Evaluating VMware Alternatives
DEV Community • 2026-04-23 06:16

Beyond the vSphere Horizon: A Verifiable Framework for Evaluating VMware Alternatives

You’ve likely heard these whispers (or shouts) in your hallways recently: "How did our renewal quote just jump by a literal order of magnitude?" "Are we treating our virtualization layer as a three-year strategic risk now?" "I'm open to migrating, but how do we guarantee uptime, backups, and a 'get out of jail free' rollback plan?" For most US-based infrastructure teams, the "pain" isn't act...

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6m read
I Looked Past the Keynote Hype: Why A2A + ADK Is the Real Story of Google Cloud NEXT '26
DEV Community • 2026-04-23 06:14

I Looked Past the Keynote Hype: Why A2A + ADK Is the Real Story of Google Cloud NEXT '26

I'll be honest with you. I almost didn't write this post about what I actually wanted to write about. Everyone's keynote recap is going to lead with Gemini Enterprise Agent Platform. The rebrand is flashy. Thomas Kurian's line about "turning intelligence into a growth engine" will be quoted in a hundred LinkedIn posts by Thursday. And sure — the platform story is real and it matters. But I've...

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DEV Community • 2026-04-23 06:07

How FinOps Supports Responsible and Sustainable AI Development

Artificial Intelligence is accelerating at a breathtaking pace—but so are its costs and environmental implications. Training large models, running inference at scale, and storing vast datasets all come with a price tag—financial and ecological. This is where FinOps steps in. Not as a constraint—but as a strategic enabler that aligns innovation with accountability. 🔹 The Hidden Cost of AI Growth AI...

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2m read
DEV Community • 2026-04-23 06:00

Stop Flickering UIs: Handle Subdomains with Next.js Edge Middleware ⚡

The Challenge of Dynamic Subdomains When scaling a professional B2B SaaS platform at Smart Tech Devs, providing clients with their own custom subdomains (e.g., acme.smarttechdevs.in) is a premium feature that instantly elevates your brand. However, architecting this on the frontend can be complex. In a monolithic React app, you might find yourself writing messy `useEffect` hooks to parse the wind...

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3m read
DEV Community • 2026-04-23 05:52

BPMN as config: one vocabulary runs the model, the runtime, and the analytics

BPMN 2.0 lets you put arbitrary attributes in your own namespace on any element. The established BPM runtimes — Camunda and Flowable — both preserve those attributes through parsing and make them accessible at runtime. That's table stakes for the spec; neither engine violates it. What differs is how those attributes reach your code. In Camunda, a Java delegate pulls the current BPMN model instanc...

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8m read
Fonctionnement d’une blockchain - Étape 5/8 : Lien “maillon - maillon”
DEV Community • 2026-04-23 05:51

Fonctionnement d’une blockchain - Étape 5/8 : Lien “maillon - maillon”

Chaque bloc pointe (par hash) vers le bloc précédent. Ce chaînage rend l’historique difficile à falsifier car modifier un ancien bloc casserait tous les hashes suivants. Qu’est-ce qu’un hash ? Un hash est une empreinte digitale unique créée à partir d’une information. Une même donnée donne toujours le même hash Une seule petite modification donne un hash complètement différent Imp...

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1m read
DEV Community • 2026-04-23 05:50

Proofdesk — The IDE for Open-Source Math Textbook Publishing

github proofdesk Inspiration Math professors who write open-source textbooks are stuck in a painful loop: edit XML in a text editor → open a terminal → run a Docker build that takes 15 minutes → refresh a browser → realize one equation is wrong → repeat. There's no integrated workspace for it. Tools like Overleaf exist for LaTeX, but nothing exists for PreTeXt — the modern XML-based fo...

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5m read
DEV Community • 2026-04-23 05:49

Learning Artificial Intelligence on Microsoft Azure: A Beginner’s Roadmap

Artificial Intelligence isn’t a distant frontier anymore—it’s infrastructure. And if cloud is the backbone of modern systems, then AI is the intelligence layer riding on top of it. Platforms like Microsoft Azure have quietly transformed AI from a research domain into a practical, deployable skill. But here’s the catch: most beginners get lost—not because AI is too hard, but because the roadmap is ...

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2m read
DEV Community • 2026-04-23 05:49

Building MCP Servers in Python: a production primer for 2026

The Model Context Protocol (MCP) went from "Anthropic side project" to industry standard in eighteen months. As of March 2026, MCP SDKs are pulling 97 million monthly downloads. Every serious agent framework — Claude, Cursor, OpenAI Agents SDK, Microsoft Agent Framework — speaks MCP natively. If you're a Python backend engineer, MCP is the most leveraged thing you can learn right now. This post i...

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DEV Community • 2026-04-23 05:48

So You Vibe Coded an App. But Can It Survive Real Users?

Let me be upfront — I'm not here to bash Vibe Coding. I've written about using AI to build, and I stand by it. But there's a conversation we're not having enough in this community, and it's this: shipping an app is not the same as building a production-ready one. Anyone can get an app live in a weekend with AI. The real question is what happens on Monday — when real users show up, internet conne...

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7m read
Analysis internal data safely with Hermes agent and OneQuery
DEV Community • 2026-04-23 05:41

Analysis internal data safely with Hermes agent and OneQuery

Personal Agents, such as Hermes Agent and OpenClaw, are powerful. They can perform deep analysis on internal data, and the results can be great. But there are safety issues. An agent can read real secret values. If your messaging channel gets hacked and an attacker can prompt your personal agent, they may be able to access your secrets. An agent can update or delete your internal data. As models...

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2m read
DEV Community • 2026-04-23 05:39

I Built a Local AI VRAM Calculator & GPU Planner (Beta)

I added a new tool to the site: the Local AI VRAM Calculator & GPU Planner (Beta). This came out of a problem I kept running into while experimenting with local models. It is surprisingly easy to end up with a setup that technically works, but does not actually match the kind of workloads you want to run. This is mainly aimed at figuring out GPU and VRAM requirements for running local LLMs. ...

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4m read
Shadow Deployments for AI Agents: Test in Prod without breaking anything 🚀
DEV Community • 2026-04-23 05:39

Shadow Deployments for AI Agents: Test in Prod without breaking anything 🚀

If you’ve worked with AI agents in production, you already know one thing. Deploying a new version is not the same as deploying traditional software With non AI systems, you push code and then run tests. If everything looks fine then you go live With agents, things get messy. The same input can produce slightly different outputs. Improvements in reasoning might come with unexpected side effects....

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4m read
DEV Community • 2026-04-23 05:35

Why Technical Startups Fail: Building in a Vacuum

There is a specific, lonely moment that every technical founder eventually faces. It is the moment the code is clean, the architecture is scalable, and the beta version is ready to launch. You look at your screen, proud of the elegant solution you've built, and you expect the world to beat a path to your door. Instead, the silence is deafening. You send out a few emails to your network. You post ...

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10m read
DEV Community • 2026-04-23 05:31

gpt-image-2 API Developer Guide: Pricing, Thinking Mode, and Production Integration (2026)

gpt-image-2 API Developer Guide: Pricing, Thinking Mode, and Production Integration (2026) OpenAI announced gpt-image-2 on April 21, 2026 — but the official API doesn't open to developers until early May 2026. That gap between "announced" and "shippable" is exactly when developers need to architect, budget, and prototype. This guide covers everything a developer needs to know now: the p...

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10m read
DEV Community • 2026-04-23 05:20

The Primeagen's '99': A New Approach to AI in Code Editors

The Perpetual Struggle: Why Current AI Integrations in Code Editors Often Fail Many developers have experienced the frustration of integrating AI assistants directly into their code editors. The common pitfalls include: Clunky User Experience: AI tools that feel out of place and disrupt the natural coding flow. Lack of Contextual Understanding: AI that doesn't grasp the nuances of your spe...

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DEV Community • 2026-04-23 05:20

Best resources to learn game development with Node.js

Every few months, someone asks me, What are the best resources to learn game development with Node.js? The question usually comes from one of two places. Either someone has fallen in love with JavaScript and wants to build games without leaving the ecosystem, or they’ve seen that multiplayer games often use Node on the backend and want to understand how it all fits together. The tricky part is th...

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