Free online tool collection for everyday workflows.

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.

Featured tools

A sample of the most useful browser-based utilities currently published on JW Tool Box.

• USD Amount to Words: Check Writing Converter

  Convert dollar amounts into English words and check-ready strings.

• QR Code Generator (URL to PNG)

  Turn a URL into a static QR code and download it as a PNG.

• Screen Wake Lock (Prevent Sleep, Always On)

  Prevent your screen from dimming on Google Meet, Zoom, or while presenting.

• Batch Convert HEIC to JPG — Free iPhone Photo Converter

  Batch convert HEIC to JPG or PNG in your browser without uploading photo files to JW Tool Box. Batch size depends on device and browser memory.

• PDF Compressor (Reduce Size, Shrink, Optimize)

  Shrink PDF size with browser-only rasterization and quality presets.

• PDF Merger (Combine, Join, Binder)

  Combine multiple PDF documents without leaving your browser.

• Image Compressor (Reduce Size for Web, PNG/JPG/WebP)

  Shrink PNG/JPG/WebP files and export optimized assets instantly.

• Image Resizer: Resize JPG, PNG, and WebP

  Resize images to exact dimensions and convert to WebP, JPEG, or PNG entirely in your browser.

• PDF Splitter (Extract Pages, Separate, Cut)

  Split PDFs into single pages or export a custom page range.

• PDF Page Organizer (Reorder, Rotate, Delete Pages)

  Reorder, rotate, delete, and clean up PDF pages locally.

• PDF to Image Converter (JPG, PNG, Extract)

  Convert every PDF page to JPG or PNG images directly in your browser.

• Image to PDF Converter (Combine, JPG, PNG)

  Combine multiple JPG/PNG images into one PDF instantly.

Latest guides

The blog publishes practical how-tos that match the tools — original writing per language, never machine-translated copies.

• How to Write a Check Amount in Words: Handwriting Steps and Examples

  For $1,500.75, write One Thousand Five Hundred and 75/100 Dollars on a US check's amount line. Write 1,500.75 in the numeric box. The two fields should represent exactly the same amount. Generate your own written amount, or follow the handwriting steps below. This guide focuses on the amount line; the six-field walkthrough covers the rest of the check. Write the Amount Line in Four Steps 1. Sp…

• Convert Transparent PNG to JPG With a White Background

  To convert a transparent PNG to JPG with a white background, open the Image Resizer, upload the PNG, choose JPEG, then select Resize & convert and Download result. The converter places white behind transparent pixels before creating the JPG. Keep PNG or WebP if the finished image must remain transparent. Why a Transparent Background Can Turn Black PNG can store transparency: a pixel may be com…

• How to Keep Screen On During Google Meet, Zoom & Teams (2026)

  Working from home? Nothing kills your flow faster than your screen going dark in the middle of a Zoom call, a client demo, or while monitoring your work dashboard. Stop fighting with power settings. Use our Keep Screen On tool to prevent sleep mode with one click—no software installation, no admin privileges required. If your main problem is a locked-down corporate laptop where IT prevents you…

• Favicon Size Guide 2026: Exact Dimensions for ICO, PNG, SVG, and Apple Touch Icons

  If you only need the answer, use this favicon size set for most modern sites: 16x16 and 32x32 inside favicon.ico, a 32x32 PNG for crisp browser tabs, a 180x180 Apple Touch Icon, a 192x192 PWA icon, and a 512x512 PWA icon. In the early web, a single favicon.ico file was enough. Today that is only the fallback layer. Modern sites usually need a small browser-tab icon, a few PNG assets for higher…