Blog
Step-by-step articles, tested workflows, and reference guides that support the tools published on JW Tool Box.
TL;DR — Drop your PDFs into the browser, drag pages around, export. Everything runs locally via pdflib (WebAssembly). Your files never leave your machine. Adobe Acrobat costs $240/year. Smallpdf and iLovePDF upload your files to their servers, which is a nonstarter for NDAs, tax returns, or medical records. And macOS Preview can merge but can't split or reorder without workarounds. Here's how…
Switching between CSV spreadsheets and JSON API payloads is one of those daily developer tasks that sounds simple but constantly bites you: mismatched delimiters, quoted fields with commas, encoding issues. This guide covers how to convert CSV to JSON (and back) instantly in your browser—no Excel, no Python script, no uploads. ⚡ Quick Start → CSV to JSON Converter — paste your data, convert, c…
One compression preset does not fit every channel. The settings that work for a Shopify hero image are different from what works for an Instagram story cover or a resume headshot. This guide gives you practical starting points you can use with the Image Compressor without guessing from scratch. The Fast Rule: Width Matters More Than Most People Think If a platform displays an image at roughly…
Adding watermarks to photos protects your work and establishes ownership before sharing online. But doing it imagebyimage is tedious—and uploading your photos to a cloud watermark service creates a privacy risk you probably haven't considered. This guide covers how to batch watermark photos free, directly in your browser, in under a minute. ⚡ Quick Start → Image Watermark Tool — drop your file…
We've all been there: you're trying to upload your tax returns, a signed lease agreement, or medical records to a secure portal, only to be hit with a harsh red error message: "File exceeds maximum size of 2MB." In 2026, despite our devices having terabytes of storage, government portals, HR software, and university submission systems still enforce archaic upload limits. The instinct is to Goo…