Word Frequency

Count word and letter frequency in any text. Top-100 words and per-letter frequency table. Optional stopword filter, case-insensitive matching, exportable as CSV. Useful for editing prose (spotting overused words), keyword density audits, and language statistics.

What word frequency reveals

In editing, frequency exposes overuse. If “actually” or “basically” lead the list (after stopwords), edit them out. If your project’s name dominates a marketing draft, the page is too repetitive.

In SEO, frequency matters less than it did, but density auditing (1-2% for primary keywords) is still a sanity check.

In cryptanalysis, frequency analysis is the historical first attack on substitution ciphers — match observed frequencies to known language statistics.

What this tool gives you

• Top-100 words with count and percentage
• Letter frequency A-Z bar chart
• Bigram count (top consecutive pairs)
• Sentence count, average length
• CSV export for further analysis

Common workflows

Edit prose. Paste a draft, toggle stopwords off, look at the top non-trivial word — if it appears 30 times in a 500-word article, edit half out.

Audit a landing page. Paste body copy, check for keyword density. Brand name should appear naturally — not in every paragraph.

Cryptanalysis exercise. Substitute frequency-analyze a Caesar cipher (try the ROT13 tool first). Most-frequent letter likely maps to “e”.

Compare drafts. Run two versions through; see which themes dominated.

Last updated: 2025-01-15