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Full-page screenshots that are actually complete: lazy loading, sticky headers, 100vh layouts and emoji

Disclosure: I build and sell one of the three screenshot tools compared below, a hosted screenshot Actor on Apify. This article was written with the help of AI; the numbers come from the public benchmark data linked at the end, and everything here works in a plain Playwright or Puppeteer script.page.screenshot({ fullPage: true }) looks done until you look at the output: blank rectangles where lazy images should be, the sticky header stamped down the page, a cookie banner across the middle, and e

Why seeking in Electron's video player stutters – and how I fixed it

I built a video player called Doggy Player because seeking in the players I tried always felt janky. When I moved to Electron, I hit the same problem in a new form: Chromium's <video> element is great at playing files and surprisingly bad at jumping around in some of them. This is what I found, and what I did about it. Why seeking is slowTo show a frame at an arbitrary position, a decoder has to start from the previous keyframe (IDR) and decode forward from there. If keyframes are 8 s

Free SEO Audit Crawler API: Automate Technical SEO Checks with JavaScript or Python

Desktop crawlers like Screaming Frog are excellent, but they're manual: open the app, crawl, export, repeat. If you manage several sites, run an agency, or want SEO checks in CI after every deploy, you want an SEO audit crawler you can call as an API and get JSON back.This guide shows how to do that with the SEO Audit Toolkit on Apify, from JavaScript, Python and curl, and how to turn the results into automated alerts. What the audit checksFor every crawled page:Title and meta description:

TypeScript 7 Upgrade Guide: What Breaks, ESLint, Next.js and Real Benchmarks

I tested the TypeScript 7 upgrade and ran into three catches that are easy to miss: removed tsconfig options, a typescript-eslint break, and a side-by-side setup that changes which compiler next build uses. Here is the full guide with the exact errors and fixes.TypeScript 7 is the native, Go-based rewrite of the TypeScript compiler, and it has been the latest version on npm since July 8, 2026. It type-checks the same code as TypeScript 6 but much faster. On this box Hono's source built 5.2x fast

Arbeitsagentur Jobsuche API: How to Get German Job Listings as JSON (2026 Guide)

The Bundesagentur für Arbeit (BA) Jobbörse is Germany's largest job board, with around a million live Stellenangebote. It is backed by a public REST API, often called the Arbeitsagentur Jobsuche API, that the official website and app use.This guide covers how that API works, where it gets awkward, and a ready-made way to get clean job data as JSON from JavaScript, Python or plain HTTP. The raw Jobsuche API in 30 secondsThe community-documented endpoint (see the bundesAPI/jobsuche-api projec

Google Trends API in 2026: How to Get Trends Data Programmatically (JS & Python)

If you have ever searched for a "Google Trends API", you probably found three things: an alpha API from Google with a waitlist, the unofficial pytrends library that keeps breaking with HTTP 429 errors, and a lot of scraping tutorials that stop working after a week.This guide shows a practical alternative: calling a hosted Google Trends scraper as an API. You send keywords, you get back clean JSON with interest over time, interest by region, related queries and related topics. I'll show JavaScrip

Build a Voice Notification System with ElevenLabs

Why Voice Notifications MatterWhen you’re building a real‑time application—think chat, alerts, or accessibility features—displaying a text banner just isn’t enough. A voice notification can grab attention, convey urgency, and reach users who are multitasking or visually impaired. The key to a polished voice experience is a high‑quality, expressive TTS engine that can even mimic a specific speaker. That’s where ElevenLabs steps in. Getting Started with ElevenLabsElevenLabs offers a rob

Native BigInt. Faster than decimal.js

You've probably seen this one:0.1 + 0.2; // 0.30000000000000004The usual answer is "just use decimal.js". And honestly, that's good advice. decimal.js, big.js and bignumber.js are great libraries. But they were all written before JavaScript had BigInt, so under the hood they keep digits in arrays and do every multiplication and division by hand, in JavaScript.That made me curious. What if a decimal library just handed the hard part to BigInt and let V8 do the work in native code?So I built bigin

I built mcp-doctor — a free CLI + web tool that debugs your MCP servers in seconds

The problemYou add an MCP server to your Claude Desktop or Cursor config. It doesn't show up. No error. You stare at mcp_settings.json for 40 minutes.I've been there. The failure modes are boring and invisible: a typo in mcpServers, a missing package name for npx servers, a command that's not on your PATH, a server that starts but dies during the handshake, tool schemas that are technically valid but broken at runtime.There is no standard tool to just... check it. So I built one. mcp-

Create an AI Dubbing Tool for Video Content

Why Build Your Own AI Dubbing Tool?If you’ve ever needed to localize a video, add a narration track, or simply replace a shaky on‑camera voice, doing it manually can be a nightmare. Traditional dubbing requires hiring voice actors, booking studios, and spending hours syncing audio to video. With modern text‑to‑speech (TTS) and voice‑cloning tech, you can automate most of that workflow in a few lines of code.In this post I’ll walk you through a practical, end‑to‑end pipeline for creating an

Benchmarking Paperclip Agent Orchestration: Concurrent Task Throughput and Memory Overhead Under Load

Benchmarking Paperclip Agent Orchestration: Concurrent Task Throughput and Memory Overhead Under LoadWhen evaluating paperclipai/paperclip for production agent orchestration, I needed concrete performance data under realistic multi-user concurrency. Here's what I measured and where the architecture holds up. Test TopologyEnvironment:Next.js 15.2 app router with React Server Components4-core, 8GB VPS (DigitalOcean)PostgreSQL 16 with connection pooling (pgBouncer, 20 max connections)k6

Why my Electron renderer can't change anything itself

In my Electron app the main process owns the data. It holds the SQLite database, runs git and talks to the network. The renderer, the React side, never does any of that and holds only a read-only copy of the state.The copy works like this. On connect, the renderer asks for a full snapshot. After that, main sends batches of changes, each with a sequence number, and the renderer applies them in order. Main collects changes for a short moment and sends them as one batch to every window.The rule I'm

Frontend Testing: Confidence Without Brittleness

âš¡ TL;DR: Test behavior, not implementation, and your suite stops breaking on every refactor. Follow the testing trophy to put effort where it pays, write component tests that survive change, and reserve end-to-end for critical flows. ContentsThe suite that broke on every refactorThe one principle that fixes most of itThe testing trophy: where effort should goChoosing the right layer for each testA component test that survives refactorsBehavior over implementation, in practiceEnd-to-end: the

I built 60+ developer tools that run 100% in your browser — here's how the "network" ones work

Every time I paste a JWT into some random online decoder, a small voice in my head asks: where is this token going? Most online tools POST your input to a server. For a JSON formatter that's mildly annoying. For a JWT decoder or a password generator, it's genuinely bad practice.So I built developk.kr — a collection of 60+ developer utilities where nothing you type ever leaves your browser. No installs, no sign-ups, no uploads. Formatting, hashing, encoding, diffing — all client-side JavaScript.T

91 Free Developer Tools to Simplify Your Daily Workflow

As developers, we often need quick tools for formatting JSON, encoding and decoding data, inspecting tokens, working with SQL, and handling everyday development tasks.Instead of installing a separate application for every small job, having a collection of handy web tools can save time during development. A Collection of Free Online Developer ToolsI've been building Vamriko, a website that brings together useful online tools for developers and everyday tasks.The developer tools collection in

Edit Distance or Levenshtein Distance in an Easy Recursion + Memoization Way

Edit Distance, also known as Levenshtein Distance, is a common problem where we need to find the minimum number of operations required to convert one string into another.The three allowed operations are:Insert a characterDelete a characterReplace a characterFor example:word1 = "horse"word2 = "ros"Output: 3We can convert "horse" into "ros" using three operations:Replace h with r: "rorse"Delete r: "rose"Delete e: "ros"Let's solve this problem using recursion + memoization in JavaScript. Step

Server-side lead events with the GA4 Measurement Protocol (and the pitfalls)

Browser tags miss leads. Ad blockers, consent banners, people closing the tab right after submitting, and thank-you pages that never load all mean that the generate_lead event in GA4 is often lower than the number of rows in your CRM. If you optimise paid campaigns on that number, you are optimising on a sample with a bias you cannot see.A small, honest fix is to send the lead event from your server, at the moment the form submission is actually stored, using the GA4 Measurement Protocol. This p

🧠 FalkorMind: Building a Graph-Driven Multi-Agent RCA Console with FalkorDB

IntroductionWhen a critical production service goes down, time is everything. In modern microservice architectures, Site Reliability Engineers (SREs) are flooded with fragmented logs, alerts, and metrics. Digging through dozens of microservices, databases, and recent commits to identify the actual root cause inflates Mean Time to Resolution (MTTR) and costs businesses thousands of dollars per minute.To solve this, we built FalkorMind — a single-page SRE observability console that combines Falkor

npm Supply-Chain Attacks: What the Chalk and Shai-Hulud Incidents Mean for Your App

In September 2025 attackers poisoned some of the most widely used packages on npm, the public registry almost every modern web app is built from. This is a software supply-chain attack: rather than break into your company, attackers compromise code you depend on. In the worst of them, the Shai-Hulud worm, the prize was developers' cloud and GitHub keys.Below: the two biggest npm supply-chain incidents, why they matter even if you've never heard of npm, and a checklist to protect your product. Mu

Why CAGR Is Not the Same as Your Actual Year-by-Year Return

CAGR is useful because it compresses a beginning value, ending value, and time span into one annualized rate. It is also easy to misuse as if an investment grew at that rate every year. I built the calculator to show both the compact percentage and a reconstructed year-by-year path, making that distinction hard to miss. The core formula describes an equivalent rateThe computed result normalizes the inputs and clamps the number of years:const b = Number(beginValue.value) || 0;const e = Numbe