Use Cases
UUID: where and when to use unique identifiers
Real-life UUID use cases: databases, microservices, APIs, file systems.
6 min read - 2026-03-01
Ultimate Tools Blog
Articles, guides and tips for online tools
Tips
Test Data: 6 Tips for Developers
How to correctly generate and use test data: consistency, edge cases, GDPR.
5 min read - 2026-03-01
Use Cases
Image Cropping: Practical Scenarios
When and why to crop photos: social networks, documents, banners, product cards.
4 min read - 2026-03-01
Use Cases
Statistics in Real Life
Examples of using statistical calculations in business, science, and everyday life.
6 min read - 2026-03-01
Use Cases
JSON Data Generator: 5 Use Cases
Practical scenarios: prototyping, load testing, demonstrations, education.
5 min read - 2026-03-01
Use Cases
Meta Tag Generator: 5 Use Cases
When to use the meta tag generator: site launch, migration, SEO audit.
5 min read - 2026-03-01
Guide
Removing duplicates: how to remove duplicate lines
A guide to removing duplicates from text. Cleaning lists, data and logs from repetitions.
5 min read - 2026-03-01
Use Cases
Temperature converter: 5 real-life scenarios
Real cases when a temperature converter is needed: travel, cooking, medicine, science and industry.
5 min read - 2026-03-01
Guide
Pregnancy calculator: due date, due date and trimesters
How to calculate gestational age and expected due date. Trimesters, key stages of fetal development.
8 min read - 2026-03-01
Use Cases
Tone Generator: 5 Use Cases
Practical use cases for the tone generator: from audio system calibration to hearing tests.
6 min read - 2026-03-01
Use Cases
Shoe Size Converter: When You Need It
Typical situations when a shoe size converter helps save time and money.
4 min read - 2026-03-01
Use Cases
Calculation of tips - examples for different situations
Practical examples of tip calculation: business lunch, banquet, delivery and other situations.
4 min read - 2026-02-28
About this blog
Practical tutorials and deep guides for calculators, converters, generators and developer tools.