📈 Free On-Page SEO & Keyword Checker

Audit your website titles, meta tags, and copy layouts before publishing. Grade text readability and measure exact keyword densities 100% locally in your browser.

100% Privacy-Friendly: Your text and drafts never leave your browser
🔍 SEO Tool

SEO & Keyword Checker

Check your title, meta description and content for SEO best practices, keyword usage and readability — entirely in your browser.

Title & Meta Description

Empty0 / 60 characters
Empty0 / 160 characters

Content & Keyword Analysis

🔒 Everything is analyzed directly in your browser. Nothing you type here is sent to a server.

How to Use the SEO & Keyword Checker

Start with the title and meta description

Search results show only a limited number of characters. A title of roughly 30 to 60 characters usually displays in full, while very short titles waste space and long ones get cut off. The meta description has a similar limit, and a clear, specific one encourages more people to click.

Keyword density

Keyword density is how often your focus keyword appears compared with the total word count. A level of roughly 1% to 2.5% tells search engines what the page is about without looking forced. Repeating a phrase far more often than that reads badly and can look like keyword stuffing.

Readability

The tool calculates the Flesch Reading Ease score from your average sentence length and word length. Higher scores are easier to read, and scores around 60 to 70 correspond to plain English that most people follow comfortably. Short sentences and everyday words usually raise the score.

Use it as a guide, not a rulebook

No score guarantees a ranking. Write for your readers first, then use the checker to catch obvious problems such as a missing keyword, a truncated title or dense paragraphs.

Your drafts stay private

Everything is analysed in your browser. Your text, titles and keywords are never sent to a server or stored.

Related guides: How to check blog post SEO before publishing

Frequently Asked Questions

This tool performs a complete on-page audit of your content. It analyzes your SEO title length, meta description quality, structural headings, overall readability scores, and core keyword density balances to ensure your articles are optimized for Google ranking.

Keyword density measures how frequently your target keywords appear relative to your total word count. Keeping this ratio between 1% and 2.5% helps search engines understand your topic clearly while avoiding keyword stuffing penalties.

Yes, completely. Like all features on ImageToolkit, the entire analysis happens client-side inside your web browser. Your text, drafts, and keywords are never sent to a server or stored anywhere.

Yes. The tool analyzes your sentence lengths, vocabulary structures, and paragraph flows to calculate an instant readability breakdown. This ensures your content is accessible and engaging for everyday web visitors.