Frontend - DevRadar

In the lifecycle of a mobile application, the most expensive milliseconds are the ones that occur between the user tapping the icon and the first meaningful interaction. In my eight years of professional software engineering, I have seen these milliseconds treated as a secondary performance metric—a

Dev.to (EN Zone) 2026-09-05

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Frontend

Showoff Saturday: a 59-tool utility site in 10 languages, Flask backend, every tool is a plain JS file

toolkitsapp.com Formatters (JSON, SQL, CSS, HTML, YAML), converters (CSV to JSON, number bases, timestamps, units, timezones), generators (QR, UUID, passwords, cron expressions, favicons, meta tags), image tools (compress, resize, format convert, SVG to PNG), a JWT decoder, a regex tester, a handful

Reddit r/webdev 2026-09-05

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Frontend

Why I Built Coordiation CSS for Humans and AI Agents

Hello DEV community! 👋 For my first post, I want to share why I started building Coordiation CSS, an independent utility first CSS compiler focused on static output, owned source, and machine readable contracts. Coordiation is currently at version 1.0.0-rc.1. This is a release candidate, not a cla

DEV Community 2026-09-05

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Frontend

From generating files to using tools: a code agent's ReAct loop

So far in this series, the agent generated the whole solution in a single call: you gave it the spec and the tests, and the model returned the entire function. That works when the whole task fits in a prompt. But in a real repository you don't know in advance which files you'll need, and you can't f

DEV Community 2026-09-05

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Frontend

What “local OCR” should mean in a web application

“Runs in your browser” is easy to put on a landing page. It is harder to make it a property of the whole OCR pipeline. An OCR page can have a static interface and still send the selected file to an API. It can keep the image local but put the extracted text into error reporting. It can avoid both a

DEV Community 2026-09-05

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Frontend

Voice agent that books appointments: ElevenLabs, Cal.com and a backend that never lets the model guess

A voice agent that books appointments is a system where someone talks, a model understands what they are asking for, calls real tools, and hangs up with an appointment on a calendar. I built one in a lab repo: ElevenLabs Agents handles the voice—transcription, turn-taking, synthesis—Cal.com handles

DEV Community 2026-09-05

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Frontend

Built a full office suite that runs 100% client side with no backend, sharing for feedback (Showoff Saturday)

I built OBSCURA OS, a workspace suite (docs, sheets, slides, notes, file storage, forms, calendar) that runs entirely client side in the browser. No backend database for user content, no accounts, no server round trips for your data. State lives in memory during the session and users export their ow

Reddit r/webdev 2026-09-05

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Frontend

Postman for API Work: Collections, Environment Variables, Secrets, Auth, and Tests

Postman is the tool most people use constantly and never actually learn properly, pasting URLs into a blank request, hardcoding a token directly into a header, clicking Send and eyeballing the response. This post covers it the way it's actually meant to be used, with the Product API from the earlier

Dev.to (EN Zone) 2026-09-05

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Frontend

I Built Voodoo.js to Bring TSX and Reactivity Directly Into Plain HTML

What if you could write reactive interfaces, map arrays, filter data, use components, and even write JSX style syntax directly inside a plain HTML file? That is the idea behind Voodoo.js. Voodoo.js is an HTML first JavaScript framework designed for developers who want modern frontend capabilities

Dev.to (EN Zone) 2026-09-05

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Frontend

I built a distributed web directory for exploring the open web

Recently I had an idea for a research tool, I realized I'd need to be able to find websites programmatically and the webs data is behind the largest corporations, not something we reliably have access to for being able to develop around. So it got me thinking, how lightweight could you first build

Reddit r/webdev 2026-09-05

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Frontend

Architecting Enterprise Angular with Signals: Zoneless Reactivity and 60fps Performance

Architecting Enterprise Angular with Signals: Zoneless Reactivity and 60fps Performance For nearly a decade, Angular relied on Zone.js to intercept asynchronous browser events and trigger top-down dirty checking across the entire component tree. In large enterprise dashboards displaying live telem

DEV Community 2026-09-05

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Frontend

From Software Engineer to AI Engineer - Part 6: Closing the loop

Everything so far has been single-shot. One call in, one result out, with us gluing the pieces together. But what if we get a realistically complex prompt: "Tell me how much it costs to refund 100 euros to a European consumer card. Then issue a full refund of 100 euros for payment with id abc123 and

DEV Community 2026-09-05