Methodology
What "nothing leaves your browser" means
Every tool on WordsPolish is a client-side React component. Text you type or paste is held only in the browser's own memory (React state) and processed by plain JavaScript string/array operations running on your device. No tool makes a network request containing your text — there is no server-side endpoint that receives it. This is a static, zero-runtime-API site (house-standards.md): nothing is computed on a server at request time.
Counting & readability calculations
Word counts split on whitespace; sentence counts use punctuation-boundary detection with common-abbreviation handling; syllable counts use a vowel-cluster heuristic with a known-exception list. Reading-time and speaking-time estimates use sourced average-adult reading/speaking speeds. Full per-tool detail is documented on each tool's own page as it ships.
Platform limit sourcing
Every page under /limits/ states the date the limit was last verified against the platform's own current documentation or observed behavior. Limits are reviewed on an annual refresh cadence, since platforms change them without much notice.