SEO Writing AssistantGet real-time SEO suggestions while writing content with keyword, readability, and engagement analysis.

SEO Writing Assistant
Get real-time SEO suggestions while writing content with keyword, readability, and engagement analysis.
Set target keyword
Enter your target keyword and select the content type (blog, landing page, product, etc.).
Write or paste content
Write your content in the editor. Suggestions update in real time as you type.
Review SEO score
Check your content score and address suggestions across keywords, readability, and engagement.
What Is SEO Writing Assistant?
The SEO Writing Assistant provides real-time content optimization suggestions as you write. It analyzes your content against SEO best practices, checking keyword usage, density, and placement; readability metrics like sentence length and passive voice; and engagement signals like questions, numbers, and power words. The tool gives you an overall SEO content score that increases as you address each suggestion, helping you create content that is optimized for both search engines and readers.
Why Use Our SEO Writing Assistant?
- Real-time SEO content score with categorized suggestions
- Keyword density and placement tracking (first paragraph, conclusion)
- Readability analysis: sentence length, passive voice, transitions
- Engagement checks: questions, statistics, power words
- Content length recommendations by content type
Common Use Cases
Blog Writing
Optimize blog posts for target keywords while maintaining readability.
Landing Pages
Write conversion-focused copy with SEO best practices.
Product Descriptions
Create SEO-friendly product content at optimal length.
Content Editing
Score and improve existing content for better SEO performance.
Technical Guide
The assistant evaluates content across four categories: Length (word count vs. target range by content type), Keywords (density, first/last paragraph placement, frequency), Readability (sentence length, passive voice, transition words, paragraph length), and Engagement (questions, numbers/statistics, power words). Each check returns a pass, warning, or error status. The overall score is the percentage of checks passed. Content type targets: Blog (1000-2500 words), Landing Page (300-800), Product Description (150-500), Pillar Content (2000-5000).
Tips & Best Practices
- 1Address keyword placement suggestions first — they have the highest SEO impact
- 2Keep sentences under 25 words for better readability scores
- 3Use at least 3 transition words per article for content flow
- 4Include questions to engage readers and target "People Also Ask" boxes
- 5Add numbers and statistics to increase content credibility
Related Tools

Keyword Density Checker
Analyze keyword density in your content with single, 2-word, and 3-word phrase breakdowns.

Content Readability Score
Calculate Flesch-Kincaid, Gunning Fog, and other readability scores for your content.

Heading Structure Analyzer
Analyze H1-H6 heading hierarchy in HTML for proper SEO structure.

Page Title Analyzer
Analyze page titles for SEO best practices including length, keyword placement, and power words.

Google SERP Preview
Preview how your page title, URL, and meta description appear in Google search results.

Bing SERP Preview
Preview how your page appears in Bing search results with desktop and mobile views.
Frequently Asked Questions
QWhat SEO score should I aim for?
QHow long should my content be?
About SEO Writing Assistant
SEO Writing Assistant is a free online tool from FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration required. No ads. Just fast, reliable tools.







