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Practical guides that pair with our free tools.
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- Tutorials
How to Fix the Most Common JSON Errors
Learn why JSON fails to parse and how to fix trailing commas, single quotes, missing quotes and other frequent mistakes.
- Writing
Word Count, Character Limits and Reading Time: A Practical Guide
How word and character counts work, why different tools disagree, and how to estimate reading and speaking time sensibly.
- Tutorials
How to Calculate Percentages Without Mistakes
Clear formulas and worked examples for percentage of a number, percent of a total, percentage change, discounts and percentage points.