The Text Compare API is an tools for comparing two texts and highlighting their differences. It offers results in JSON format and pre-rendered for HTML and CLI.

Rapid Text Similarity API is a powerful tool that allows developers to easily integrate text similarity functionality into their applications. With an efficient underlying algorithm, this API provides a seamless experience for comparing and measuring similarity between texts.

Compare 2 strings/texts and determine the differences between them. The API provides both an easy to process json version to work with and a pre-rendered result for html and cli output.

Validate, pretty print or minify structured data documents, flatten nested documents to dot notation and back, compare two documents field by field, and convert arrays of records to and from spreadsheet friendly text.

Compare two texts by lines, words or characters and get a structured difference plus a unified patch, like version control tools produce. Built for change tracking, reviews and audit logs.

Image Similarity Checker API allows you to compare the similarity of two images and receive a percentage of similarity. Perfect for verification and authentication purposes, this API can quickly and accurately determine the likeness of two images.

The Text Change Detector API is an tools for comparing two texts and highlighting their differences. It offers results in JSON format and pre-rendered for HTML and CLI.

Score the readability of any English text. Returns Flesch-Kincaid, Gunning Fog, SMOG, ARI scores, sentence-level breakdown, improvement suggestions, and target grade pass/fail in one call.

Analyze deep links by tracking redirects, HTTP codes, meta robots policies, robots.txt, detect soft 404s, and report comprehensively on SEO status.

Monitor complete links, discover internal redirects, status codes, meta robots restrictions, robots.txt, identify soft errors, and offer comprehensive SEO insight.

Analyzes URLs, detects redirects, status codes, indexability, meta robots, robots.txt, and soft 404s, providing comprehensive information on status and SEO.

Text Difference Comparison API allows you to easily compare two strings or texts and view the differences between them. The API returns a JSON for easy processing and also provides pre-rendered results for HTML and CLI output

Listen for HTTP signals by examining URLs, reveal redirects, codes, indexing status, meta robots, robots.txt, detect soft 404s, and generate detailed SEO reports.

Streamline your research with the Similar Web Content Retriever API—gather relevant online content quickly.

Make your content accessible to all users with the Accessibility Compliance Accessibility Compliance Readability API.

Boost student understanding with the EdTech Readability Improvement API designed for educational content.

Increase user engagement by enhancing readability with the User Engagement User Engagement Readability API.

Analyze and improve academic texts with the Academic Readability Analysis API for robust insights.

Ensure your legal documents are crystal clear with the Legal Compliance Legal Compliance Readability API.

Streamline complex information using the Technical Writing Technical Writing Readability API for clear communication.

Enhance your content's clarity with the Content Marketing Content Marketing Readability API for better engagement.

Optimize your SEO strategy by improving readability with the SEO Optimization SEO Optimization Readability API.

Checks translated JSON, localization strings, placeholders, ICU messages, missing keys, extra keys, empty values, untranslated values, and multi-locale consistency.

Submit a product keyword and receive JSON‑structured comparisons of prices, retailers, reviews, shipping fees, stock status, high‑resolution images, availability, and rich details.

Identify similar and competing websites in the same category, ranked by traffic and audience overlap.