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Adding 2FA to an app sounds like a weekend of reading RFCs, so most side projects never get it. I published 2fa-kit to make it two steps. Step 1, enrol: generate a secret, show it as a QR code, store it encrypted.…
Hey DEV community! 👋 If you use an iPhone or Mac alongside Windows or Android, you've definitely run into this frustrating scenario: You transfer a bunch of .heic photos to your PC, only to realize half your apps can't…
If you're anything like me, your browser tabs have probably gotten out of control at some point. 20 tabs. 30 tabs. 50+ tabs. At some point, finding the one tab you actually need becomes a problem. That's why I started…
Every time I've needed signatures inside a product I was building, the same thing happened. The signature part took an afternoon. The contract part took weeks — because the legal text lived in someone else's WYSIWYG…
Where to Buy LinkedIn Accounts in 2026: 388 Marketplaces for Aged, PVA & Verified Profiles Website: OwnSEOIT Introduction LinkedIn profiles represent professional identities rather than ordinary digital commodities. A…
TypeScript Exclude and Extract in Depth: Filtering Union Types for Real API Contracts This article was written with the assistance of AI, under human supervision and review. TypeScript Exclude and Extract in Depth:…
AI Assistant for Finance Careers: Land Your Dream Role Building a competitive profile in accounting, CPA, and project management takes more than just credentials—it requires clear communication, polished materials, and…
Originally published on NextFuture Bạn gắn camera điện thoại Android lên con robot, model detect chạy ngọt trong demo, rồi ra môi trường thật thì frame trễ thấy rõ và bounding box nhảy loạn giữa các khung. Phần lớn thời…
The Quest Begins (The “Why”) I was knee‑deep in a data‑clean‑up script that had to read a massive CSV, pull out a handful of columns, convert some strings to integers, and then feed the results into a machine‑learning…
My browser-based tools each took exactly one file. Converting twenty tracks meant twenty page loads, and on the background remover each of those re-downloaded a 44 MB segmentation model to do three seconds of work. So I…
Most frontend interview prep is a list of questions. You grind the list, feel prepared, then freeze in the room — because the real question was never "do you know debounce," it was "can you notice that this problem…
How to Build a Chrome DevTools Extension tags: javascript, chrome, devtools, tutorial tags: javascript, chrome, devtools, tutorial tags: javascript, chrome, extension, money tags: javascript, chrome, extension, money…
In the last article we showed the mechanism — Lesan turns a ~2,550,250-document read into a ~25,250-document read by embedding relationships and keeping them in sync. This article answers the obvious objection: "But…
If you've ever wanted to understand how drag-and-drop actually works under the hood — no libraries, no frameworks, just the browser — building a Kanban board is a great way to find out. Here's how I built one using…
Most developers hate SEO because it feels like voodoo. We are told to "optimize for keywords" or "build backlinks," which sounds like marketing fluff. But there is a side of SEO that is purely engineering. Technical SEO…
A Content-Security-Policy looks like a firewall rule and mostly behaves like one. The gap between "I wrote a policy" and "I have a policy" is almost always one clause in the spec — and I found out I had misread one of…
An image cropper has to satisfy three rules on every single pointer move: the crop stays inside the image neither side goes below a minimum if a ratio is locked, width ÷ height equals it exactly Each is trivial alone.…
Sixty-four games into building one board game a day, every search has had the same shape: I move, you move, each of us picking the best available. Chess, Checkers, Hex, Quoridor — all minimax or rollouts, all over…
As part of my "one project a week" roadmap toward becoming a software engineer, this week I built an Expense Tracker — a clean, responsive app for logging income and expenses, with everything running client-side. No…
Your agent calls fetch() on a pricing page, gets a 200, passes the HTML to the model, and the answer is wrong. Not because the model hallucinated, but because the HTML was mostly an empty React shell, a bot challenge,…
I Built a Free YouTube Chapter Generator (Because Descript Charges $15/month) Stop paying $15 per month for Descript when you just need to add timestamps to your YouTube videos. I was tired of Descript's subscription…
AR makeup try-on rarely fails in the demo. It fails on the third page load, on a mid-range Android, in the Instagram in-app browser, or on a skin tone nobody on the team has. Six failure modes account for most of it:…
PWAs & Native Apps: How Zyctra AI Delivers Both The Problem: Users Want Native Speed, Developers Want Web Simplicity You're building the next generation of productivity tools. Your users demand a seamless experience…
Quick fact that surprises a lot of developers the first time they hear it: Stripe does not guarantee it will deliver a webhook event exactly once, and it does not guarantee events arrive in the order they happened. Both…
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TL;DR Use expo-notifications in 2026, even in a bare React Native workflow. CNG makes the managed/bare distinction mostly irrelevant. The token identifies a device plus install, not a user. Plan for rotation from day…
Every developer has been there: you need to format a JSON payload, decode a JWT, test a regex, or validate a Helm chart, but pasting proprietary code or company tokens into random online converters feels sketchy. Most…
A few months ago I got tired of how job hunting actually works. You find a role you like, you apply, and then you realize it was posted three days ago and already has 400 applicants. By the time a job shows up in your…
Every JSON formatter, regex tester, and Base64 tool I could find online works the same way: you paste your data in, it gets sent to a server, and you get a result back. For a throwaway public snippet, that's fine. For…
Gmail is one of the most widely used email services in the world. Individuals, students, freelancers, professionals, businesses, and organizations use Gmail for personal communication, work, education, document sharing,…
I've been quietly building Antigravity Tools — a collection of 59 free, browser-based developer utilities — and today I'm sharing everything I built and learned. Why vanilla JS? No React, no build step. The main…
Telegram is a popular messaging platform used by individuals, professionals, creators, businesses, communities, and organizations around the world. Users can communicate through private chats, groups, channels, voice…
Definition and Usage The getElementById() function returns the Element object whose HTML id attribute value matches the specified string. If no matching element exists, it returns null. Basic Example <!DOCTYPE html>…
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I built Tab Timekeeper around a small question that is surprisingly easy to lose track of while browsing: How long have I been on this website in this tab? Browsers make it easy to open a page, follow a link, switch…
How VisualRefiner converts HEIC, compresses images, and transcodes video with no server, no upload, and no account — using the Canvas API, WebCodecs, and a little WebAssembly. Most "free online converters" work like…
Searchable helps brands track and improve how they appear across AI search engines like ChatGPT, Perplexity, and Claude, pairing visibility analytics with an agent that guides users on what to do next. The Searchable…
