Case Converter FREE

Convert text to upper, lower, title or sentence case, and tidy up whitespace, duplicate lines and line breaks. The output is separate from your input.

Free to use No registration Privacy-first
Analyzed in your browser. Nothing is uploaded.
0 Words
0 Characters
0 Without spaces
0 Sentences
0 Paragraphs
0:00 Reading time

The language decides how words and sentences are split, which stop words are filtered, and which readability formulas are valid.

Clean up

Paste some text above and the analysis appears here.

How it works

How this is measured

UPPERCASE, lowercase, Title Case, Sentence case and tOGGLE cASE, plus the whitespace and line operations that usually come with them: trim extra spaces, collapse blank lines, unwrap hard line breaks, remove duplicates, sort and reverse.

Case conversion is locale-aware. The Turkish dotted and dotless I and the German sharp S all change under the language's own rules, and applying the ASCII rules to them produces text that is wrong in a way native speakers notice immediately.

Your input is never overwritten. The result appears in a separate box, and replacing the input with it is a deliberate button press - because silently rewriting what somebody typed is how work gets lost.

Learning
4 Sep 202620 min read

SSR vs CSR vs SSG vs ISR: what to choose for SEO and performance

SSR, CSR, SSG and ISR differ mainly in where and when HTML is generated. For SEO, the key question is whether important content and metadata are available without waiting for client-side JavaScript. For performance, server cost, caching, JavaScript execution, hydration and freshness matter as well. In 2026, the best architecture is usually not one rendering mode for an entire application, but a strategy selected for each route or even each part of a route.

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4 Sep 202620 min read

robots.txt and sitemap.xml: a complete technical SEO guide

robots.txt and sitemap.xml solve two different technical SEO problems. The first controls which URLs crawlers may fetch, while the second helps search engines discover important URLs and their metadata. Problems begin when robots.txt is used to block indexing or when a sitemap contains redirects, duplicates and noindex URLs. A solid setup combines crawl control, consistent canonical URLs, accurate sitemaps and Search Console monitoring.

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4 Sep 202621 min read

Core Web Vitals in 2026: LCP, INP and CLS in practice

Core Web Vitals in 2026 still consist of three metrics: LCP for loading the main content, INP for interaction responsiveness and CLS for layout stability. The scores alone do not tell you what to fix. Effective optimization requires separating real-user field data from lab tests, finding the actual LCP element, slow interaction or layout shift source, and then monitoring the result after deployment.

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