Readable
Readable is an online toolkit for analyzing and improving writing readability and quality.
What Readable is
Readable is an online toolkit for analyzing and improving writing readability and quality. It checks readability, spelling, grammar, style issues, clichés, profanity, tone, sentiment and keyword density. Users can analyze pasted text, URLs, whole websites, emails, spreadsheets, and files such as Word, PDF, Open Office, Markdown and ebooks. Readable provides 17 readability formulas alongside its own A–E grade, and its scoring is verified by more than 10,000 automated tests and hand-calculated scores. Its editor highlights issues and suggests improvements, including shorter synonyms for difficult words. Slack and Dropbox integrations are available, and its API can send text or URLs from applications and CMSes for scoring. The listed ContentPro plan is $12 a month, billed at $12/mo annually as $48; it includes one user and lists no website slots or API access. CommercePro costs $24/mo billed annually as $288, while AgencyPro costs $69/mo billed annually as $828 and includes 50,000 API requests per month. Readable says submitted content belongs to the customer and is not shared with AI or LLM systems.
Good
- Checks readability, grammar, style, tone and sentiment.
- Analyzes text, URLs, websites, emails and multiple file types.
- Editor highlights issues and suggests improvements.
- Offers Slack and Dropbox integrations.
- Customer can delete submitted data after scoring.
Watch out
- No free plan is listed.
- ContentPro lists no website slots or API access.
- API access is listed for AgencyPro.
- ContentPro is billed annually at $48.
Who it suits
Readable suits authors, marketers, educators, lawyers and others who want to assess or improve writing. Teams needing API access should note that it is listed for AgencyPro, with a stated monthly allowance only on that plan.
Verdict
Readable combines readability scoring with checks for language issues and an editor that suggests revisions. Compare plan limits carefully, particularly if you need website slots or API access.
Plans and prices
From Readable's own pricing page, checked 14 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| ContentPro | $12 a month | 1 user · no website allowance shown · no API allowance shown · billed as $48 annually |
| CommercePro | $24 a month | 3 users · 1 website · additional users $4/mo · additional websites $4/mo · billed as $288 annually |
| AgencyPro | $69 a month | 5 users · 3 websites · 50,000 API requests/month · extra API usage $1 per 5,000 requests · additional users $4/mo · additional websites $4/mo · billed as $828 annually |
The facts
Each one read from Readable's own pages, with the date it was checked.
What it does
- Analysis
- It checks readability, spelling, grammar, style issues, clichés, profanity, tone, sentiment, and keyword density.checked 3 Oct 2026
- API authentication
- API requests use API_SIGNATURE and API_REQUEST_TIME headers, with the signature generated from an API key and timestamp.checked 14 Oct 2026
- API commercial limit
- The pricing table places API access and a 50,000-request monthly allowance in AgencyPro, with overage billing.checked 14 Oct 2026
- API endpoints
- Documented endpoints analyze plain text at /api/text/ and URLs at /api/url/, with optional body-text extraction for URLs.checked 14 Oct 2026
- API purpose
- The public API accepts text or URLs and returns readability and keyword-density statistics in JSON.checked 14 Oct 2026
- Compliance
- Readable says it reviewed data processing activities and created a standard Data Processing Addendum in preparation for GDPR.checked 3 Oct 2026
- Data and AI policy
- Readable says its services do not use AI or LLMs and that submitted content is not shared with AI or LLM systems.checked 14 Oct 2026
- Documentation
- The help center covers readability formulas, getting started, subscriptions, ReadableWeb, the editor, API documentation and data sources.checked 14 Oct 2026
- Editing assistance
- The editor highlights problem areas, explains them and offers shorter synonym suggestions.checked 14 Oct 2026
- Editing help
- Its editor highlights issues and suggests improvements, including shorter synonyms for difficult words.checked 3 Oct 2026
- Email scoring
- Users can send a test email to a unique account address and receive readability results for HTML and plain-text versions.checked 14 Oct 2026
- Encryption
- Its privacy policy says sensitive information submitted online is encrypted in transit and stored on servers in a secure environment.checked 3 Oct 2026
- File analysis
- Readable scores Word, OpenDocument, CSV, PDF, HTML, plain text, RTF, ebooks and Markdown files.checked 14 Oct 2026
- GDPR
- Readable says it prepared GDPR compliance changes and offers a standard data-processing addendum for customers.checked 14 Oct 2026
- Integrations
- Official pages list Dropbox and Slack applications as integrations.checked 14 Oct 2026
- Intended users
- Readable describes its audiences as authors, marketers, educators, lawyers, and others working to improve writing.checked 3 Oct 2026
- Language checks
- Checks include spelling, grammar, passive voice, adverbs, clichés, buzzwords, hedge words, transition words, profanity, stop words and lazy words.checked 14 Oct 2026
The company
- Company headquarters
- LinkedIn lists headquarters in Brighton, Sussex, United Kingdom.checked 14 Oct 2026
- Company size
- LinkedIn lists Readable as a privately held writing-and-editing company with 2–10 employees.checked 14 Oct 2026
- Customer data ownership
- The terms assign customers ownership of uploaded data and say stored history is automatically deleted within 60 days unless deleted sooner.checked 14 Oct 2026
- Founded
- LinkedIn lists Readable as founded in 2016.checked 14 Oct 2026
- Headquarters
- Hassocks, West Sussex, United Kingdomchecked 23 Sep 2026
- Legal maker
- The service provider is Added Bytes Ltd trading as Readable, registered in England and Wales under company number 08026399.checked 14 Oct 2026
Money
- Free usage
- The public text page offers a basic readability score without a subscription, while higher-volume and advanced analysis require ReadablePro.checked 14 Oct 2026
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