The Toolerax Blog — Page 11
Practical guides and tips to get the most out of our tools — and the concepts behind them.
Find and Replace with Regex
Go beyond simple find and replace. Learn whole-word and case-sensitive matching, then use regular expressions and capture groups to reformat text in bulk.
Read articleHow to Compress Images for a Faster Website
A complete guide to image compression: lossy vs lossless, choosing quality and format, resizing first, and how much you can safely cut.
Read articleHow to Resize an Image Without Losing Quality
A complete guide to resizing images: pixels vs percentage, aspect ratio, why upscaling never truly works, retina screens, and what size to use for the web.
Read articleWhat Is a Unix Timestamp?
Unix epoch time explained: seconds vs milliseconds, why timestamps have no timezone, leap seconds, and the year 2038 problem.
Read articleThe Power of Compound Interest
How compound interest works, the formula behind it, why time matters more than rate, and how regular contributions turn small savings into large sums.
Read articleHow to Convert CSV to JSON
How CSV maps to JSON, why commas inside quotes break naive parsers, the Excel traps that corrupt your data, type conversion, and nested structures.
Read articleHow to Calculate Sales Tax
The simple formulas for adding sales tax to a price and extracting tax from a total, why reverse tax isn't just subtraction, and how VAT and GST compare.
Read articleHEX, RGB & HSL Explained
How HEX, RGB and HSL work, how to read a hex code without a picker, why HSL is the designer's format, and how to build a color palette that actually works.
Read articleCelsius to Fahrenheit, Explained
How to convert Celsius to Fahrenheit and back, a shortcut you can do in your head, why the scales exist, key reference points, and where Kelvin fits in.
Read articleHow to Convert Units of Measurement
The one method that converts any unit reliably, essential conversion factors, why metric is easier, and the unit errors that have destroyed real spacecraft.
Read articleBody Fat Percentage Explained
What body fat percentage means, why it beats BMI, healthy ranges for men and women, and how the U.S. Navy tape method estimates it with just a measuring tape.
Read articleHow to Calculate Days Between Two Dates
How to count days between dates correctly: the inclusive vs exclusive trap, counting business days, leap years, and why manual counting so often goes wrong.
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