How to debug a JSON API response without losing important data
A worked JSON debugging workflow: isolate syntax errors, preserve large IDs, check data types, and distinguish formatting from schema validation.
Read the guide →Practical guides for everyday tools
Work through real tasks with sample inputs, expected results, and the checks that help you avoid a misleading answer. These guides are available in English.
Resize, convert, or compress? A practical workflow for web images
Choose the right order for cropping, resizing, converting, and compressing images, then check dimensions, transparency, and visual quality.
Read the guide →Calendar days, business days, and time zones: choosing the right calculation
Worked examples for elapsed days, inclusive dates, working days, and New York–India time conversion, with clear assumptions and checks.
Read the guide →Percentages, percentage points, and stacked discounts: which number should you compare?
Follow a fictional signup report and a two-discount price example to choose the right baseline, reproduce the calculation, and explain the result clearly.
Read the guide →Clean a pasted list without silently changing its meaning
A reproducible text-cleanup workflow for blank lines, duplicates, sorting, and comparison, with checks for case, whitespace, numeric formats, and Unicode.
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