Blog
Step-by-step articles, tested workflows, and reference guides that support the tools published on JW Tool Box.
TL;DR — Paste two versions of any text, code, or document into the Diff Checker → and see every addition, deletion, and change highlighted instantly. Runs locally — nothing gets uploaded. Ever spent an hour squinting at two versions of a document trying to find what changed? Whether it's a lawyer who swapped "30 days" for "60 days" in a contract, a colleague who "made a few small edits" to you…
Have you ever clicked a link in an email only to get a "Page Not Found" error? Or noticed your UTM tracking parameters mysteriously disappearing from Google Analytics? The culprit is almost always improper URL encoding. TL;DR — URL encoding converts special characters (spaces, &, =, ) into percentencoded format so they don’t break your links. Spaces become %20, ampersands become %26. Only enco…
In 2026, most developers don't write regular expressions from scratch—they ask an AI to write them. But there's a massive catch: AIgenerated regex is notorious for confidently hallucinating edge cases that silently fail in production. A single overly greedy quantifier (.) suggested by a chatbot can bring down your entire parsing pipeline or cause catastrophic backtracking. Instead of pasting A…
Most "free" QR code generators are a trap. You create a code, print 1,000 flyers, and a week later the code stops working unless you pay a monthly subscription. JW Tool Box QR Code Generator is different. We generate Static QR Codes that: 1. Never Expire: The link is stored in the code itself, not on our servers. 2. Have No Scan Limits: Scan it 1 million times, it will still work.
Creating content for Instagram, TikTok, and X (Twitter) requires precise image dimensions. If you upload the wrong size, the platform will crop or compress your image, ruining its quality. You’ve probably searched for "best image resizer for social media" and found dozens of adfilled websites. But have you ever wondered what happens to the photos you upload there? Most online tools upload your…