SEO Title Length Checker

SEO Title Length Checker is a browser-based tool that instantly measures the character count and pixel width of your page title (title tag) and meta description (meta description tag), providing a real-time preview of how your page will appear on Google's search engine results page (SERP).

In search results, titles and descriptions may be shortened depending on the available display width. As practical guidelines, this tool treats titles around 512px and descriptions around a 650px mobile-safe range as useful checkpoints. For Japanese content, titles around 28-32 characters and descriptions around 80-120 characters are common working ranges, but CJK full-width characters occupy more space than Latin characters, so checking estimated pixel width as well as character count is important.

This tool calculates character count, byte count, and estimated pixel width automatically, then rates your text as "good" (green), "warning" (yellow), or "error" (red) based on practical length guidelines. Supporting both Japanese and English evaluation criteria, it estimates CJK character width and includes visual progress bars that make title and description adjustments easier.

SEO specialists, web writers, marketers, bloggers, and content creators can use this as a final check before publishing, and it can fit into multi-page title review workflows. If you also need to check social sharing previews, use the [OGP Preview Tool](/en/text/og-preview-tool/). To review image alt text, use the [Alt Attribute Checker](/en/seo/alt-attribute-checker/). For crawl-control checks, use the [Robots.txt Tester](/en/seo/robots-txt-tester/), and for structured FAQ snippets, use the [FAQ Schema Generator](/en/seo/faq-schema-generator/). All processing is done in the browser, so the text you enter is not uploaded for server-side processing.