I failed a "design a document editor" interview, so I built one
How I built a drag-and-drop resume editor Roleframe exists because of an interview I failed. After a long job hunt I finally landed a system design…
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Building a Client-Side Byte to String Decoder with Unicode Support
Hey DEV community! 👋 When debugging network streams, parsing custom file formats, or inspecting database buffers, we often extract data as raw array…
Making git rebase less painful (probably overthinking)
[question] Hi, I'm working on a GitHub TUI client project—just a casual, not-too-serious project. If you don't mind, please take a look and share an…
How to Open a 50GB Log File — and Reopen It in 0.05 Seconds. A klogg Alternative, Benchmarked
If you searched for a klogg alternative , you probably already know klogg is good. It is fast, it is free, it is open source, and it runs on Windows…
I built a complete DJ console in a single HTML file using Web Audio API
Hey dev community! I want to share a project I just launched: MasterDJ AI — a professional DJ platform that runs entirely in the browser. What is it…
Why I Built a Browser Extension for WhatsApp Web
I did not start building MSG.AI because I had discovered a grand new AI opportunity. It began with a much smaller problem—one that kept repeating ev…
I built a reverse leaderboard where getting to #1 means everybody hates you
Hi - Hola! I vibe-coded this little side project called Poopularity. The idea is basically a reverse leaderboard: the more people hate something, th…
I Built a Voice-First AI Sports Journal (And Why I Didn't Over-Engineer It)
There is a fundamental problem with fitness tracking apps today: friction. After a grueling workout, when your hands are sweaty, your heart rate is…
The Only Judge Is Reality
The most dangerous thing in any system — a person, a company, an AI — is confidence that runs ahead of proof. Being sure is not the same as being ri…
Visio-Display: Building a Self-Hosted Digital Signage Platform
I have been developing Visio-Display , a free and open-source digital signage platform released under the GPL-3.0 license . The project started with…
An 18-hour half-life for mixed launch feeds
Product Hunt, Hacker News, and GitHub do not speak the same language. One is votes in a 24-hour window, one is comments on a Show HN, one is stars o…
Pin the Prompt: Safe Prompt Releases for a Tencent RTC Voice Companion
A voice companion prompt can be edited in seconds. That does not make it a harmless change. A small wording adjustment can alter how the companion h…
Building localized landing pages in Laravel: hreflang, pricing, and Product JSON-LD
International SEO looks simple until a product needs different language variants, currencies, payment providers, policies, and structured data for e…
Adding Furigana to Word Documents is a Nightmare
Adding furigana to a Word document sounded like a small extension to EZFurigana. Furigana are the small pronunciation guides that appear above Japan…
Where Should I Look? 3 Small UX Problems in Remote Demos
In remote software demos, the biggest problem is not always the product itself. Sometimes the audience simply doesn’t know where to look. A button m…
I gave my data-file tool an MCP server — so an AI assistant can explore your CSVs and hand you an offline HTML report
For the last few weeks I've been building dataloupe , a small tool that turns a data file (CSV, TSV, JSON, Parquet, Excel) into a single self-contai…
Why I Built a Privacy-First Time Tracker with Python, Tkinter, and SQLite
Most time-tracking applications require an account, store activity in the cloud, or collect more data than users expect. I wanted a simpler alternat…
I Ran a Real SEO Audit On My Own Live Site — Here's a Free SEO Audit Report Sample
I Ran a Real SEO Audit On My Own Live Site — Here's a Free SEO Audit Report Sample Four days ago, my site was invisible to Google. Not slow. Not pen…
I built a local CI/CD runner to debug pipelines before pushing them
CI/CD pipelines are great once they work. But developing and debugging them often looks like this: change YAML -> push -> wait for CI -> fi…
438 of 536 quarantined — and not one was a bad verdict
A 12-person humanitarian NGO carries exactly the same strict-liability sanctions exposure as JPMorgan, and cannot hire anyone to manage it. I built…
Live capture vs a frozen map: two honest ways to record a scrolling page
This is the second post in a series about auto-scroll capture in a Chrome extension. The first post was the problem. This one is the fork I had to m…
NexPath Review: The Prompt Quality Layer for Cursor, Windsurf and Claude Code
I've been building devpub , an open-source CLI that publishes and tracks articles on Dev.to. Last week I was in Cursor, adding a new analytics featu…
I built a free checker that reads a crypto address before you send (SendCheck)
Hey dev.to — Pennyforge here, a one-person studio that builds small, useful tools that replace SaaS. Today I'm sharing our first product: SendCheck…
Any Language, One Store: How Zaris Speaks the Redis Protocol
Zaris is a distributed key/value store built for .NET, with its own binary protocol and native .NET clients. With 2.0.0, every Zaris node can also e…
I built a GIF compressor that runs 100% in your browser (because Discord's file limits are the worst)
If you've ever tried to upload a GIF as a Discord emoji, you know the drill. Discord wants it under 256KB, your export is 4MB, and now you're bounci…
Portrait Clip, a local Windows app for vertical clips
Portrait Clip is a Windows app that takes a landscape recording and reframes it for TikTok, Shorts, and Reels. MIT. Local only. No account, no water…
I just launched a wiki site for "Beasts of Reincarnation" players
Hi DEV Community! 👋 As a developer who loves building side projects, I'm excited to share my latest creation: a dedicated wiki and guide site for th…
Building a Reliable AI Transcription Pipeline on Cloudflare Workers
I recently shipped HiTranscript , a web app that turns public video URLs and local media uploads into searchable transcripts and subtitle files. The…
My agent's p50 was 29s. Its p95 was 182s. That ratio decided the product.
I have 67 timed turns against a live LLM agent, captured in a single batch run and written to disk: seconds p50 29.2 p95 182.0 max 210.3 n 67 comple…
Decentraland warns your scene UI will clash with its mobile controls — but won't say where they are
I put two buttons at the bottom of a Decentraland scene, the way the platform's own mobile guidance says to. On a real phone, one of them wrote a pe…