Text Inspector
Text Inspector analyzes English text and reports difficulty, readability, lexical diversity, and CEFR levels.
What Text Inspector is
Text Inspector analyzes English text and reports difficulty, readability, lexical diversity, and CEFR levels. Its overall difficulty score is based on more than 200 metrics, and its CEFR Level Checker assigns levels to individual words with information about their commonness and difficulty. Listed tools include Statistics and Readability, Lexical Diversity, Scorecard, Tagger, EVP, BNC, COCA, Academic Word List and Phrases, Knowledge-Based Vocabulary Lists, and Metadiscourse Markers. The API lets people and organizations add Text Inspector analysis and scoring to their own products. The maker identifies language professionals, academics, and students as users, including people preparing teaching materials or tests and evaluating student work. English is fully supported; other languages may receive limited statistics or lexical-diversity information. The free plan covers 250 words, with data automatically deleted after six hours. The Organisation plan allows up to 13,000 words, the largest stated limit, and is listed at £59.76 monthly or £358.56 yearly.
Good
- Reports readability, lexical diversity, and CEFR levels.
- Overall difficulty score uses more than 200 metrics.
- Free plan covers 250 words.
- API access is available.
- Analysis data and private URLs are deleted after six hours.
Watch out
- English is the only fully supported language.
- The free plan has a 250-word limit.
- The largest stated limit is 13,000 words.
- Personal data may remain in EEA storage while an account exists.
Who it suits
Text Inspector suits language professionals, academics, and students analyzing English writing or preparing teaching materials and tests. Its API may suit organizations that want to add its analysis and scoring to their own tools.
Verdict
Text Inspector combines text analysis, vocabulary tools, and API access, with a free plan for shorter analyses. Consider its English focus and word limits when choosing a plan.
Plans and prices
From Text Inspector's own pricing page, checked 14 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 250 words · no extras · data deleted after 6 hours |
| Standard | £9.96 a month | 10,000 words · exports · English Vocabulary Profile · Academic Word List · Scorecard · six-hour deletion · manual clearing · £9.96 monthly or £59.76 yearly |
| Organisation | £59.76 a month | Up to 10 people · 13,000 words · exports · English Vocabulary Profile · Academic Word List · Scorecard · six-hour deletion · manual clearing · £59.76 monthly or £358.56 yearly |
| Developer API | £360 a year | Full API access · 30-day free test · from £360 per year |
| API access | — | Full API access for use in your own applications · from £360 per year; 30 days to test free of charge |
The facts
Each one read from Text Inspector's own pages, with the date it was checked.
What it does
- Academic Word List
- The Academic Word List and phrases feature supports academic, TOEFL and IELTS material development.checked 14 Oct 2026
- API access
- The API requires account authentication, creates a session ID, accepts analysis submissions and returns parser results through REST endpoints.checked 14 Oct 2026
- API documentation
- Public documentation covers API versions released in 2019, 2020 and 2023 and provides current online v2.1.0 documentation.checked 14 Oct 2026
- API integrations
- The API lets people and organisations incorporate Text Inspector analysis and scoring into their own tools and products.checked 30 Sep 2026
- API SDK example
- The v2.1.0 documentation includes PHP cURL code for creating an authenticated API session.checked 14 Oct 2026
- Award
- The British Council named Text Inspector by Stephen Bax and Versantus the 2017 ELTons Digital Innovation winner for online CEFR-benchmarked text analysis.checked 14 Oct 2026
- British National Corpus
- The British National Corpus feature compares usage with British English corpus data.checked 14 Oct 2026
- CEFR analysis
- Its CEFR Level Checker provides a CEFR level for individual words, including their commonness and difficulty.checked 30 Sep 2026
- COCA integration
- The Corpus of Contemporary American English feature analyzes text against American English usage.checked 14 Oct 2026
- Custom vocabulary
- Users can upload a personal Known Words list and see it separately in EVP, BNC and COCA results, graphs and exports.checked 14 Oct 2026
- Data retention
- The FAQ says analysis data is cleared from the website after six hours and each analysis has a private URL that is deleted from the servers after that time.checked 30 Sep 2026
- English Vocabulary Profile
- The English Vocabulary Profile feature reports CEFR levels for individual words.checked 14 Oct 2026
- Included tools
- Listed tools include Statistics and Readability, Lexical Diversity, Scorecard, Tagger, EVP, BNC, COCA, Academic Word List and Phrases, Knowledge-Based Vocabulary Lists, and Metadiscourse Markers.checked 30 Sep 2026
- Independent classroom finding
- A teacher’s case study found Text Inspector flagged feedback vocabulary above students’ level and led to recommendations to simplify or explicitly teach those terms.checked 14 Oct 2026
- Independent use
- Navitas presents Text Inspector as a lexical-profiling tool for aligning course and assessment texts with CEFR standards.checked 14 Oct 2026
- Intended users
- The maker describes the tool as useful for language professionals, academics and students, including preparing teaching materials, tests and evaluating student work.checked 30 Sep 2026
- Language support
- English is fully supported; other languages may return only limited statistics or lexical-diversity information.checked 14 Oct 2026
- Lexical diversity
- The lexical-diversity feature measures how varied the vocabulary is in a text.checked 14 Oct 2026
- Licence
- The terms describe the service software as licensed software supplied under subscription terms, rather than open-source software.checked 14 Oct 2026
- Limit: documentation complexity
- The English Australia Journal review says the help pages are wordy, technically dense and cumbersome compared with the main site.checked 14 Oct 2026
- Limit: interpretation burden
- The English Australia Journal review notes that users without linguistics or language-teaching backgrounds may struggle with the technical data and explanations.checked 14 Oct 2026
The company
- Company
- The pricing page identifies Weblingua Ltd as the company behind Text Inspector and gives its England and Wales registration number as 11275226.checked 30 Sep 2026
- Founded
- 2011checked 28 Sep 2026
- Headquarters
- Canterbury, Kent, United Kingdomchecked 28 Sep 2026
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