Question 1

What readability formulas does this tool compute?

Accepted Answer

Six: Flesch Reading Ease (0-100), Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index (ARI). A consensus average grade level is shown alongside each formula.

Question 2

How are syllables counted?

Accepted Answer

We use a regex-based heuristic that strips silent 'e', counts vowel groups, and floors at 1 syllable. It's accurate for ~90% of English words — proper nouns and unusual plurals may be off by one. For perfect counts you'd need a dictionary lookup (we kept it dependency-free).

Question 3

How does the passive voice detector work?

Accepted Answer

We look for common patterns: 'was/were/been + -ed/-en participle', 'has/have/had been + -ed', and 'is/are being + -ed'. Each match is listed so you can rewrite the sentence in active voice.

Question 4

What extra features does this tool have compared to others?

Accepted Answer

(1) Six readability formulas at once (most tools show 2-3). (2) Consensus average grade across formulas. (3) Per-formula reading-level label. (4) Syllable counter per word. (5) Complex word highlighter (3+ syllables). (6) Passive voice detector. (7) Sentence length stats — flags sentences over 25 words. (8) Reading time (200 WPM) + speaking time (130 WPM). (9) History (localStorage, last 20). (10) Shareable URL — encode text in the fragment.

Question 5

Is my data sent anywhere?

Accepted Answer

No. Readability analysis runs entirely in your browser using pure string and regex math. History is stored in localStorage on this device only.

Content Readability Analyzer

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