JW Tool Box

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Practical guides for browser-based tools and workflows

Step-by-step articles, tested workflows, and reference guides that support the tools published on JW Tool Box.

  • How to Embed Base64 Favicons in HTML (Zero HTTP Requests)

    Inlining a favicon with Base64 is one of those optimizations that can be useful in the right place and pointless in the wrong one. It is not a universal requirement, but it can be a clean way to remove one small request for a tiny fallback icon. The important part is understanding what to inline and what not to inline. What a Base64 Favicon Is Base64 encoding turns binary data into text. For f…

  • How to Prevent Google Meet & Teams from Auto-Sleeping (No IT Admin Rights)

    You are 20 minutes into viewing a crucial company-wide all-hands meeting on Google Meet. You haven't touched your mouse because you're just listening. Suddenly, your screen dims. A few seconds later, it goes completely black, your computer locks, and your audio cuts out. Working from home usually means dealing with aggressive corporate IT security policies that enforce a strict 5-minute screen…

  • Batch Convert HEIC to JPG: Queue, ZIP and File Checks

    Use the HEIC converter when several photos need the same JPG or PNG output settings. The current queue holds at most 30 files, converts them sequentially and packages the results into one ZIP. For your first photo, use the single-file walkthrough. Prepare the batch before selecting files Give different source images different base filenames. For example, receipt-front.heic and receipt-back.hei…

  • JavaScript Regex Debugger Guide: Capture Groups, Flags and Browser Limits

    Use the JavaScript Regex Tester to inspect matched text, its index and numbered capture groups. This guide focuses on debugging behavior and browser limits. For your first test, use the basic regex walkthrough. Start with a small, reproducible example Enter the pattern without surrounding / characters. For an invoice identifier, use: regex

  • The Hidden Risk of Online Code Formatters (And How to Stay Safe)

    We've all done it. You have a messy, minified JSON response or a chaotic SQL query, and you search for "online json formatter", "beautify mysql query", or "mysql formatter". You paste your code into the first result, get the clean output, and move on. But have you ever stopped to ask: Where did my data just go? The Server-Side Trap Most older online tools work by sending your data to their bac…