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Dev tools · December 2, 2025

JW Tool Box

I got tired of "free" online tools that may steal data or force you to create an account. So I built a suite of 40+ utilities that run entirely in your browser (client-side only). - No server uploads (Privacy first) - No login required - No paywalls It includes PDF tools, image converters (HEIC/WebP), and developer utilities. Built with React, Vite, and WASM. Feedback welcome!

JW Tool Box launched on December 2, 2025 with 5 votes, #2,550 of 11,628 launches that month.

What it does

Stop uploading sensitive files to random servers. JW Tool Box is a suite of 40+ privacy-first utilities that run 100% in your browser using WebAssembly. 🚀 What's inside: • PDF Tools (Merge, Split, Compress) • Image Converters (HEIC to JPG) • Dev Tools (JSON, Base64, Regex) • Financial Calculators ✨ Why us? • No Server Uploads (Client-side only) • No Login / No Paywalls • Blazing fast PWA • Available in English, Spanish & Chinese

JW Tool Box is a free online tool collection covering QR codes, PDF tools (compress, split, unlock, convert), unit converters, countdown timers, password makers, URL encoders, and more—no logins or installs required.

QR codes, PDFs, converters, timers, and more—no logins or installs. JW Tool Box is a free online tool collection covering QR codes, PDF tools (compress, split, unlock, convert), unit converters, countdown timers, password makers, URL encoders, and more—no logins or installs required. A sample of the most useful browser-based utilities currently published on JW Tool Box. Create high-contrast, scan-friendly QR codes for URLs, Wi-Fi, and text instantly. Shrink PDF size with browser-only rasterization and quality presets. Combine multiple PDF documents without leaving your browser. Convert every PDF page to JPG or PNG images directly in your browser. Enter the correct password to rebuild an…from jwtoolbox.com

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