Blog
Step-by-step articles, tested workflows, and reference guides that support the tools published on JW Tool Box.
TL;DR Use UPCA or EAN13 for retail unit products, ITF14 for outer cartons and case packs, and CODE128 for internal operations. If you just need to generate and test the artwork, start with the Barcode Generator. If the code will be used in retail, make sure the underlying number is valid for that sales channel. If you are searching for a product barcode generator, you probably do not need a l…
TL;DR If your starting date is April 11, 2026, then 90 days later is July 10, 2026. Instead of counting month by month every time, use the Days Calculator to add 30, 45, 60, or 90 days to any date instantly. If you are searching for what date is 90 days from today, you usually do not need calendar theory. You need the answer fast because a deadline depends on it. That deadline might be: a con…
You have a 30page PDF from your professor, your accountant, or your mortgage broker. You need to pull out a few pages as images—maybe to paste into a slide deck, upload to a form that only takes JPG, or just to share a single page in a group chat without sending the entire document. So you Google "convert PDF to JPG" and pick the first result. You upload your file. You wait. The site offers yo…
In 2012, the antivirus pioneer John McAfee was on the run in Belize. Vice magazine published an exclusive interview with him—along with a photo. The photo's EXIF data included GPS coordinates that pinpointed his exact location. He was found, arrested, and deported within 48 hours. You are probably not a fugitive. But the metadata embedded in your photos can still reveal more about you than you…
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…