Practical guides for free online tools. 325 articles — page 10 of 28.
A CSV export has 50,000 rows in random order, with duplicates and trailing spaces. Before you can analyze it, you need to sort, dedupe, and trim. Here's the data cleaning pipeline.
WCAG 2.2 introduced new contrast requirements for focus indicators, target sizes, and accessibility. A contrast checker helps you verify compliance. Here's what changed and how to check your site.
Your company password policy requires 14+ characters, upper+lower+digits+symbols, no dictionary words, and unique per system. A password generator enforces these rules automatically. Here's the IT workflow.
JSON formatter beautifies data for API debugging. Code formatter beautifies code for readability. Both add indentation and line breaks. But the use cases, users, and error modes are completely different.
A crypto price tracker shows what Bitcoin is worth right now — a snapshot of market sentiment. An ROI calculator shows what an investment returned over time — a measurement of actual performance. Different data. Different decisions.
Humans count in base-10 because we have 10 fingers. Computers count in base-2 because they have 2 states (on/off). The history of number bases is the history of the tools we use to count. Here's the 5,000-year story.
Your investment calculator says you'll have $1 million in 30 years. But inflation at 3% means that $1 million will only buy what $412,000 buys today. Here's how to calculate real returns.
Lorem ipsum is the universal placeholder text for design mockups. But using it incorrectly creates designs that break when real content is added. Here's when dummy text helps and when it hurts.
CSS supports 148 named colors — from 'coral' to 'peru' to 'gainsboro.' Most developers know 10. Here's the complete reference and when to use named colors vs hex codes.
A URL slug generator turns 'My Article Title!' into 'my-article-title'. A URL encoder turns 'hello world' into 'hello%20world'. Both process URLs. Both are essential. But they solve opposite problems.
Global weather tracks temperature, humidity, and wind speed — natural phenomena governed by physics. Crypto price tracks Bitcoin and Ethereum — digital assets governed by market psychology. Both are real-time. Both are data.
YouTube thumbnails with faces get 30% more clicks. Faces with exaggerated expressions get even more. Bright yellow and red backgrounds outperform blue and gray. Here's the psychology behind the patterns.