DEV Community • 2026-04-20 07:09

🛠️ Harness Engineering — Quick Actionable Guide 🤖

Distilled from the Learn Harness Engineering course by WalkingLabs, which synthesizes harness engineering theory and practice from OpenAI, Anthropic, and industry practitioners. The model is smart. The harness makes it reliable. — A well-harnessed agent spent \$200/6hrs and built a working game. Without a harness, same model spent \$9/20min and produced garbage. The model didn't change. The harn...

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18m read
DEV Community • 2026-04-20 07:08

Everyone Is Busy Using AI. Very Few Are Thinking

I’ve been using AI for months now. Not casually, seriously. And I’ve started noticing something uncomfortable. The Observation Everyone is busy. Building faster. Posting more. Shipping constantly. AI is everywhere: writing content generating code creating strategies solving problems On the surface, it looks like a productivity revolution. People are doing more than ever. But when I look ...

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2m read
DEV Community • 2026-04-20 07:07

Add Film Effects to Digital Photos Free (No Photoshop)

Add Film Effects to Digital Photos Free (No Photoshop) Why film photography is trending again Sales of 35mm film have increased every year since 2020 according to industry reports covered by PetaPixel . Kodak restarted several discontinued emulsions. Fujifilm raised prices on Superia and Velvia rather than discontinuing them. New cameras using old film formats- from Lomogra...

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14m read
DEV Community • 2026-04-20 07:07

How to Find and Delete Duplicate Photos (Free Tool)

How to Find and Delete Duplicate Photos (Free Tool) Why duplicate photos accumulate faster than you think Duplicates do not just come from consciously copying files. They accumulate through a dozen invisible channels. Every time a photo syncs from your phone to iCloud and then to your Mac, you may end up with two or three copies in different directories. Backup software creat...

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8m read
Hacker News: Front Page • 2026-04-20 07:07

How Long Poop Stays in Your Body May Impact Your Health, Study Finds

Article URL: https://www.sciencealert.com/how-long-poop-stays-in-your-body-may-impact-your-health-study-finds Comments URL: https://news.ycombinator.com/item?id=47831205 Points: 5 # Comments: 0

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1m read
Cozy Jam Spring 2026 Retrospective
DEV Community • 2026-04-20 07:06

Cozy Jam Spring 2026 Retrospective

During the Cozy Jam Spring 2026, my team and I created Norwegian Spring, a cozy 3D bicycle game made in Unity. You ride through a peaceful and scenic Norwegian landscape with forests, piers, and Norwegian-style homes. Because this was a cozy game jam, we wanted to make something that feels calm and just engaging enough to keep the player interested. We were a four-person team: programmer/level de...

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4m read
DEV Community • 2026-04-20 07:04

Designing a practical sorting benchmark across Python, Rust, and C

I recently built a sorting playground, and one question kept coming up: How do you compare and evaluate sorting algorithms? Not just theoretically, but in practice. The problem A simple benchmark sounds easy: run the same algorithm measure time compare But it quickly becomes complicated: Python vs Rust vs C behave very differently large inputs can break CI pipelines som...

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1m read
DEV Community • 2026-04-20 07:03

I built a free AVIF to JPG converter that never uploads your files here's how it works

Most online image converters do something that bothers me — they upload your files to their servers. Your private photos, your design work, your documents — all going through someone else's server just to convert a file format. So I built one that works entirely in the browser. How it works The converter uses the browser's built-in Canvas API and FileReader to handle the conversio...

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1m read
DEV Community • 2026-04-20 07:00

On the Programmer’s Dependency on LLMs

How many of you are using AI as a coding assistant? Most importantly, how many of you have felt a newfound dependency on these tools? Whether it is Claude Code, Cursor, Copilot, or any other coding assistant whose name may start with the letter ‘C’—or doesn’t—leveraging these tools really brings a boost of productivity. As engineers, working better, faster and stronger, is preferable, as opposed ...

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4m read
Scopewise: Submission for Weekend Challenge: Earth Day Edition
DEV Community • 2026-04-20 06:59

Scopewise: Submission for Weekend Challenge: Earth Day Edition

This is a submission for Weekend Challenge: Earth Day Edition What I Built ScopeWise is an agentic Scope 3 Category 6 (business travel) control center for a fictional company. The landing view isn't an annual report — it's an Opportunities panel that names the four or five policy levers a sustainability lead should pull next, each ranked by estimated tCO₂e recovered. Below that: a filt...

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9m read
DEV Community • 2026-04-20 06:58

Deploy a Node.js App to DigitalOcean in 5 Minutes

Deploy a Node.js App to DigitalOcean in 5 Minutes Here's a story: last year around this time I deployed an app, celebrated, went to bed. Next morning? Site was down. Server had restarted overnight. Today I'm sharing my complete deployment workflow. No BS, just what works. My Setup I'm currently running 7 production apps using this exact setup. It's stable, affordable, and l...

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2m read
Earth, Not as a line chart. Not as a dashboard. As a living, breathing 120,000-cell map where every pixel is a differential equation
DEV Community • 2026-04-20 06:57

Earth, Not as a line chart. Not as a dashboard. As a living, breathing 120,000-cell map where every pixel is a differential equation

This is a submission for Weekend Challenge: Earth Day Edition What I Built I built TERRA-STATE: VOX ATLAS, a real-time ecological simulation that runs on a 200×600 world grid with 120,000 active cells. The project turns ecological and economic feedback into a live, playable planet. Forests generate water, agriculture drains soil, cities expand, and a DESERTIFICATION CASCADE can collap...

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2m read
DEV Community • 2026-04-20 06:57

I built a sorting playground to visualize real, weird, and absurd algorithms

I’ve been experimenting with sorting algorithms recently, and I realized something: Most explanations are static. You read code, you see diagrams, but you don’t actually see what’s happening step by step. So I built a small project to explore that. https://sorting.1234567890.dev What it does The idea is simple: pick a sorting algorithm watch every step compare it with others...

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1m read
How to build a carbon footprint tracker
DEV Community • 2026-04-20 06:57

How to build a carbon footprint tracker

This is a submission for Weekend Challenge: Earth Day Edition What I Built Carbon Lens is an AI-powered carbon footprint tracker that lets you see the environmental cost of everything you buy. Point your camera at a grocery bag, upload a photo of a receipt, or type in a list of items — and Carbon Lens will instantly estimate the CO₂e footprint of each item, color-code them by impact le...

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6m read
Understanding RAG by Building a ChatPDF App: Smarter Chunking & Context Optimization (Part 3)
DEV Community • 2026-04-20 06:55

Understanding RAG by Building a ChatPDF App: Smarter Chunking & Context Optimization (Part 3)

⚡ Understanding RAG by Building a ChatPDF App: Better Chunking & Smarter Context In Part 1, we made it work. In Part 2, we made it fast. In Part 3, things got… interesting 😅 📌 Recap from Part 1 & 2 In the previous parts: 👉 Part 1 Built a basic RAG pipeline using NumPy Understood embeddings + similarity search 👉 Part 2 Switched to FAISS for fast retrieva...

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5m read
DEV Community • 2026-04-20 06:55

Future Me vs Earth

Hi, this is my project ‘Future Me vs Earth’. This app shows how our daily lifestyle impacts the future of Earth. As I select options, and move to 2050, you can see Earth’s condition change. Now I generate AI insights using Google Gemini… It gives a personalized future scenario and suggestions. The goal is to make sustainability emotional and actionable. Below is the GitHub repository link for...

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1m read
Product Hunt — The best new products, every day • 2026-04-20 06:54

PageOn.AI 3.0

A smarter visual agent for slides, posters & infographics Discussion | Link

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1m read
DEV Community • 2026-04-20 06:54

Earth Day Study Companion: For Teach-Ins and Climate Learning

This is a submission for Weekend Challenge: Earth Day Edition What I Built I built Earth Day Study Companion, a climate learning workspace designed to help people move from reading, to understanding, to teaching, to action. The idea came from a simple problem. A lot of Earth Day and climate learning happens in fragments. Someone reads a long PDF report, watches a few videos, collects ...

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10m read
Power Apps- Comparing Different Ways to Create Apps With AI
DEV Community • 2026-04-20 06:51

Power Apps- Comparing Different Ways to Create Apps With AI

Its surprising just how many different ways there are to vibe code a app in the Power Platform, at last count I had 6, but I'm pretty sure I have missed a few. So I thought it would be a good idea to compare a few of them. I'm limiting my list to just Code replated Power Apps (so skipping Plan Designer, as it creates Power Apps not Code Apps). In theory that means everything will be React Apps, ...

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10m read
DEV Community • 2026-04-20 06:51

BMAD in action: building TODOdoro

This is the final post in my series about the BMAD Method. In Part 1, I explained why I was skeptical of AI tools and how BMAD changed my mind. In Part 2, I introduced the agents and how they work together. Now I want to show you what BMAD looks like in practice. TODOdoro is a productivity app I built using BMAD. It combines todo management with the Pomodoro technique, but (as you'll see) it bec...

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12m read
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