Transparent calculations
Counts, percentages, and per-1,000 rates stay visible so you can verify what each result means.
Free Text Analysis Tools
Every word
in focus
Find the patterns in your writing. Explore words, compare drafts, and see exactly how the numbers add up.
For Humans and AI Agents
A clear view of what’s on the page
REAL WORDS. VISIBLE METHODS.Workspace/Word Frequency Counter
Explore the workspacesample.txt12 words
Good writing starts with clear thinking.
Clear thinking makes good writing possible.
Word Frequency CounterEnglish sample
| WORD | COUNT | DENSITY |
|---|---|---|
| clear | 2 | 16.7% |
| good | 2 | 16.7% |
| thinking | 2 | 16.7% |
| writing | 2 | 16.7% |
| makes | 1 | 8.3% |
Density = occurrences ÷ 12 words × 100
01Paste your text02Inspect the patterns03Take the results with you
A TOOL FOR THE QUESTION
Go beyond the word count
A focused toolkit for the way you work with language.
Word Frequency Counter
Count every word, search and sort the full vocabulary, edit stop words, and export CSV or JSON.
Keyword Density Checker
Measure words, bigrams, and trigrams, track exact phrases, and compare density changes between two results.
N-gram Analyzer
Analyze recurring phrases of custom length (including bigrams and trigrams) in text or a public webpage.
Text Analysis Comparison
Compare two texts or webpages by word count, vocabulary, normalized word frequency, bigrams, and Zipf diagnostics.
Bag of Words Analyzer
Review vocabulary, bigrams, tracked phrases, and Zipf distribution, then compare result A with result B.
Bag of Words Generator
Build raw term vectors from text or a URL and inspect term frequencies, percentages, and export-ready rows.
TF-IDF Calculator
Calculate corpus-aware TF-IDF scores for 2–10 documents and compare weighted term influence.
Text Similarity Calculator
Measure cosine similarity between two texts with BoW or TF-IDF, then inspect top contribution terms.
8live tools
4analysis languages
Pasted text is processed without server storage.
ONE ENGINE. YOUR WAY OF WORKING.
Good tools.
For you & your agents.
Use the browser when you want to look closer. Use API, CLI, or MCP when you want to go further. The same transparent methods, wherever you work.
npx --yes textanalysis-tools frequency article.txt
npx --yes textanalysis-tools frequency article.txt \
--format jsonInspectable resultsRead the docs
curl https://textanalysis.tools/api/v1/analyze \
-H 'Content-Type: application/json' \
-d '{"source":"Good writing starts with clear thinking.","language":"en"}'Inspectable resultsRead the docs
{
"mcpServers": {
"textanalysis": {
"command": "npx",
"args": ["--yes", "textanalysis-tools", "mcp"]
}
}
}Inspectable resultsRead the docs
WHY THIS TOOLKIT
Useful numbers, with the method left visible
Private by design
Text-only work stays in your browser. If a workflow includes a public URL, required inputs use the stateless API and are not stored.
Made for comparison
Normalize texts of different lengths and compare drafts, pages, or versions using the same settings.
No optimization score
The tools expose patterns and repetition without pretending that one percentage determines content quality.
LEARN THE METHODS
Formulas, examples, and limitations
GUIDE
How to Calculate Word Frequency↗
Counts, percentages, per-1,000 rates, tokenization, and a worked example.
GUIDEKeyword Density Formula↗
Exact phrase calculations, comparison rules, and why density is not a ranking score.
NLP GUIDEBag of Words Model↗
How frequency tables become document vectors and machine-learning features.
NLP GUIDETF-IDF Formula↗
Term frequency, smoothed inverse document frequency, corpus effects, and a worked example.
NLP GUIDECosine Similarity for Text↗
How document vectors become a 0–1 overlap score and what that score cannot prove.
NLP GUIDEWhat Are N-grams?↗
Unigrams through longer phrase windows, denominators, filtering, and practical uses.
WORKFLOW GUIDECompare Texts by Word Frequency↗
Measure normalized vocabulary changes without confusing them with a character diff.