🚀¡Glowfy v1.1 ya está disponible!
¡Hola a todos! 👋 Acabo de lanzar una actualización para Glowfy, la herramienta web para generar sombras CSS multicapa y efectos glassmorphism de forma visual y rápida. ✨ ¿Qué hay de nuevo en la v1.1? 🎲 Nuevo botón…
Daily edition · JavaScript
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TILens turns technical updates into a focused daily brief: official releases, trusted reporting, and practitioner analysis, deduplicated and organized by topic.
36 articles · 1 source ·
Top topics: JavaScript · React · AI
How I Built a PDF Compressor That Never Returns a Bigger File (100% Client-Side)
Every PDF compressor I tried had the same two problems: my file got uploaded to a server I know nothing about, and occasionally the "compressed" result came back larger than the original. So I built my own — it runs…
412 frontend interview questions, with answers that explain the why (JavaScript, TypeScript, React, CSS, browser)
If you used my list of 650+ frontend interview questions last year, this is the rebuilt version, and it's free. That list kept growing. The answers didn't get deeper. Many were correct but shallow: they told you what…
Building a GPS file converter that never uploads your files
Every online converter for fitness files works the same way: you upload your activity, a server parses it, you download the result. For a GPX track that is a strange deal to accept. The file is a precise log of where…
Say hi to Paperwall, a design tool that fits in one HTML file
I kept needing a quick poster, a slide, an invitation, and kept bouncing off tools that wanted an account, a subscription, or a watermark in the corner. So I built Paperwall. What it does. Pick a template, change the…
Webflow only pastes its own elements. Here’s how I got it to take SVG and HTML.
Copy an icon from Figma, press Ctrl+V in the Webflow Designer, and nothing happens. The Designer only accepts its own elements. This is how its clipboard works, and how I convert SVG and HTML into it. I run devpack, a…
What I learned building an alarm clock that lives in a browser tab
I built a browser alarm clock for people who want a quick alarm on a laptop, like a reminder to leave for a meeting or to take something out of the oven. The first thing I had to write on the page was what it can't do:…
Your analytics said 32 visitors yesterday. Nine of them were people.
Yesterday my dashboard said 32 visitors, 20 unique. I spent the evening taking it apart. Nine of them were people. Not nine out of twenty. Nine out of thirty-two page views. The unique-visitor number was inflated by 55%…
Opening RAR and 7Z Files in the Browser: 14 New Archive Tools, Zero Uploads
Most "unzip online" sites make you upload your archive to a stranger's server. The new archive family on Loona Developer Tools does the opposite: everything runs locally in your browser with libarchive compiled to…
i built a photo filter and the browser did all of it
I read a post this week about a photo editor that runs entirely in the browser. The author built APIC Web, a full editor with background removal and colour grading, all in one HTML file, and your photos stay on your…
Build a spotlight image reveal with CSS masks
A moving spotlight can reveal a different landscape without moving either image. Stack two matching views, apply a radial mask to the upper one, and update its position with JavaScript. In our experiment, a grey…
I built 14 free online tools that process your files in the browser (no uploads, no signup)
Most "free" online tools work the same way: you upload your file to someone's server, wait, and then hit a signup wall or a watermark after the second use. For things like CNIC/passport photos, CVs and scanned…
Offline, one of our free tools blames your web address and the other says nothing at all
Our marketing site registers no service worker and writes nothing to Cache Storage. You can confirm both in a console on any page of it: (await navigator.serviceWorker.getRegistrations()).length // 0 (await…
A page of ours with nothing to click carries 253 event listeners, and 151 of them are on document
Open our FAQ page, open the console, and ask Chrome what is listening: const l = getEventListeners(document); console.log(Object.keys(l).length, "types,", Object.values(l).reduce((a, v) => a + v.length, 0),…
Half the JavaScript on our static FAQ page never runs, and 98 KB of it is the framework's server code
Our FAQ page is prerendered. It has no form, no widget, no video, and nothing on it changes after it paints. It references 19 JavaScript chunks, 18 of which the browser actually fetches. Earlier today I counted how many…
The Case of the Blank SharePoint Page (and the Guest Who Couldn't See It)
SPFx web part and application customizer not loading for guest or external users, and the Public CDN fix TL;DR: Guests can't read your SPFx bundles from the app catalog, so the page renders blank. Enable the Public CDN…
Decode Base64 in Your Browser: The Two Errors the Text Studio Reports, and the One It Never Mentions
I work on OnePassApps. This is the Text Studio's Base64 tab again, but this time I drove the decode side of it and wrote down what it refuses, what it quietly shortens, and what happens to a result you have already…
CSS Modules Explained: Say Goodbye to Global CSS Collisions in React
What is a CSS Module? A CSS Module is a build system configuration that automatically scopes Cascading Style Sheets (CSS) class names locally to the specific JavaScript component that imports them. Rather than relying…
Does Static Typing Reduce AI's Bugs? I Had Claude Code Build the Same Git Clone Three Times Each in TypeScript and JavaScript
"If an AI is writing your code, TypeScript is the safer choice." You hear it a lot, and I more or less believed it too. A type checker tells you what's wrong, so an AI should reach correct code more easily with one. But…
I built 59 free browser-based dev tools in vanilla JS — here's what I learned
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…
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