Guides
Toolbantu Articles
Straightforward guides for getting the most out of Toolbantu's free online tools — creating QR codes, compressing and resizing images, formatting JSON, counting words, and more. No fluff, just what you need to get the job done.
Utility
How to Create a QR Code Online
Learn how to create a QR code online in under a minute, no signup or app required. Turn any link or text into a scannable, downloadable QR code.
Utility
What Is a QR Code and How Does It Work?
A plain-English explanation of what a QR code is, how it stores information, and how phone cameras read it — plus how to create your own.
Image
How to Compress an Image Without Losing Quality
Learn how to compress an image without losing quality, using smart compression settings instead of guesswork. Free, browser-based, no uploads.
Image
JPG vs PNG: Which Image Format Should You Use?
JPG vs PNG explained simply: how each format compresses images, when to use one over the other, and how to compress either without losing quality.
Image
How to Resize an Image Online
Learn how to resize an image online to exact dimensions without stretching or distortion, using a free browser-based tool with no signup required.
Writing
How to Count Words and Characters Online
Count words and characters online instantly with a free, live word counter. See sentences and paragraphs too, with no signup or word limit.
Developer
What Is JSON?
What is JSON? A simple explanation of JSON's structure, why developers use it, and how to format or validate it online for free.
Developer
How to Format JSON Online
Learn how to format JSON online for free — pretty-print, minify, and validate JSON instantly in your browser, with no signup required.
Security
How to Create a Strong Password
Learn what makes a password strong: length, randomness and uniqueness. Includes a quick way to generate one and simple habits that protect your accounts.
Developer
What Is Base64 Encoding and How Does It Work?
Base64 turns any data into plain text characters. Learn how the encoding works, why it makes data about 33% bigger, and where you will run into it.
Developer
What Is URL Encoding (Percent-Encoding)?
URL encoding replaces unsafe characters in links with % codes. Learn which characters get encoded, how spaces work, and the difference between encodeURI and encodeURIComponent.
Developer
What Is a UUID and When Should You Use One?
A UUID is a 128-bit identifier that is unique without a central authority. Learn the format, how v4 and v7 differ, and when a UUID is the right choice.
Design
HEX vs RGB vs HSL: Which Color Format Should You Use?
HEX, RGB and HSL describe the same colors in different ways. Learn how each format works, how to convert between them, and when to use which in CSS and design.
Writing
How to Type Faster: Practical Tips and What Counts as a Good WPM
Improve your typing speed with proven habits: touch typing, accuracy first, short daily practice. Includes how WPM is calculated and what a good score looks like.
Utility
YouTube Thumbnail Sizes and Dimensions Explained
The recommended YouTube thumbnail size is 1280x720 pixels. See every resolution YouTube generates for a video and how to download the one you need.