Small tasks, explained.
Practical examples, common mistakes, and a tool to help you finish.
How to fix invalid JSON before formatting it
A practical JSON troubleshooting checklist with examples of trailing commas, quotes, comments and precision limits.
Read guide →How to compress an image without uploading it
A browser-local workflow for choosing image dimensions, JPG or WebP quality, and PNG output without sending your photo to a server.
Read guide →Unix timestamps: seconds vs milliseconds, with examples
Understand timestamp units, compare UTC and local time, and avoid timezone mistakes when converting Unix timestamps.
Read guide →Base64 is not encryption: encode Unicode text correctly
See a UTF-8 Base64 round trip, understand why encoded text is not secret, and avoid URL-safe and binary-decoding mistakes.
Read guide →Clean a pasted list without losing meaningful entries
A worked list-cleaning example showing whitespace, case-sensitive duplicates, sorting and verification before an import.
Read guide →Percentage change or percentage points? Choose the right calculation
Worked examples for discounts, relative changes and rates, including reverse calculations and zero-base limitations.
Read guide →One bilingual sentence, several valid character counts: a test notebook
Reproduce ToolDock’s mixed Chinese-English and emoji tests, and choose the right count for a translation brief, form or byte limit.
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