Free Content Optimizer
Live content score, the real top 10 competitors, and the terms they share.
Every panel below is the real product
These screenshots come from one live run on the keyword "content optimization". Nothing is mocked up.
Four scores that move while you type
One content score out of 100, plus separate readability and SEO dials; spelling and grammar come with an account. Every keystroke recalculates them in your browser, so there is no analyze button and nothing to wait for.
- 7 SEO checks and 5 readability checks, each pass or fail
- Green above 80, amber 50 to 79, red below 50
- Hover a dial to see exactly which checks failed
The 10 pages you are actually competing with
Set a keyword and a country. seotools.pro pulls the current top 10 results, reads each page, and lays your draft next to them on length and structure.
- Live Google results fetched at analysis time, not a stale index
- 31 country databases
- Counts turn red where a competitor beats you
25 to 40 terms the ranking pages agree on
AI reads the competitor pages and pulls out the vocabulary they share, split into heading terms and body terms, each with a target frequency range.
- Every term shows a live count against its own range
- Filter to All, Headings or NLP
- Counters move as you type, no re-analysis needed
Length targets taken from the SERP, not a rule of thumb
Words, headings, paragraphs and images, each with the range the ranking pages actually occupy for your keyword.
- Ranges derived from real competitor averages
- Arrows tell you whether to add or cut
- Sensible defaults before you run an analysis
Keyword, country and URL import in one bar
Set the target phrase, choose the search country, or pull a page you have already published straight into the editor to rework it.
- Import any live URL and edit the real content
- 31 countries for local results
- Re-analyze whenever the draft changes
A real editor, not a scoring box
Visual, Markdown and HTML views of the same document, with full formatting, links, images, and an outline that jumps to any heading.
- Switch between Visual, Markdown and HTML at any time
- Spelling checked 3 seconds after you stop typing
- Drafts survive a tab switch or a reload
The details that add up
None of these will sell a tool on their own. Together they are why drafts get finished here.
Reading time
Words divided by 200, right beside the score.
Word and character counts
Both live in the panel as you write.
Outline navigation
Every heading listed, click one to jump to it.
Keyboard shortcuts
Save, export, headings and the AI tools all have one.
31 search countries
Local results, because rankings are local.
9 interface languages
Including full right-to-left Arabic.
Dark mode
The editor and the HTML source view included.
Sentence difficulty
Every sentence graded easy through very hard.
Draft recovery
Your work survives a tab switch or an accidental reload.
Clean HTML
Strips Word and editor cruft out of pasted content.
Import by URL
Pull a published page in and rewrite it in place.
Images
Upload, paste or drag, with a warning on missing alt text.
What is free, and what needs an account
Free, no account
What the editor on this page does right now.
- Visual, Markdown and HTML editing
- Live content, readability and SEO scores
- Structure targets and outline
- Spell checking
- 3 SERP and term analyses per day
With a free account
Your work stops living in one browser tab.
- Saved documents and folders
- Autosave every 2 seconds
- 50 version snapshots per document
- Export to DOCX, HTML, Markdown and text
- A personal dictionary that sticks
On a paid plan
The AI writing layer and publishing.
- AI Write and 8 rewrite modes inside the optimizer
- Magic Write full-article drafting
- Whole-document AI edit chat
- One-click readability and SEO fixes
- Publish straight to WordPress
Document volumes of 10, 50 and 200 a month are the published limits for Lite, Pro and Business on our pricing page. The free editor keeps your draft in the browser tab only, so nothing is stored until you create an account.
Three steps, no account
The first two happen instantly and entirely on your machine. Only the third one talks to a server.
Paste your draft
Markdown, HTML, or plain text — the format is detected for you. Headings, paragraphs, and images are counted as soon as the text lands.
Instant, offline
Add your target keyword
This drives the placement checks: whether the keyword appears early, how densely it appears, and whether it makes it into a heading.
Instant, offline
Analyze the top 10
We read the pages ranking for that keyword right now and pull out the terms they share and how long they run. This takes about 20 seconds.
3 free per day
What a plan actually adds
Two things this free tool deliberately does not do. Here is what they look like when they are switched on.
AI fixes
Rewrites the sentences holding your score down, in place.
Spelling and grammar
Not checked in the free tool. An account adds a spelling and grammar check.
Every check, with its real threshold
Most content scores are a black box. These are the exact rules behind every number this tool shows you.
| Check | What it measures | Passes when | Feeds |
|---|---|---|---|
| Flesch reading ease | Sentence length and syllables per word, on the standard Flesch scale | Score is 50 or above | Readability + content score |
| Average sentence length | Total words divided by total sentences | 20 words or fewer | Readability |
| Syllable density | Average syllables per word across the draft | Under 1.7 | Readability |
| Hard sentences | Sentences of 21+ words or above 2.0 syllables per word | Fewer than 25% of all sentences | Readability |
| Keyword in opening | Whether the keyword appears in the first 100 words | Present | SEO score |
| Keyword density | Keyword occurrences as a share of total words | Between 0.5% and 3% | SEO + content score |
| Keyword in a heading | Whether any H1–H6 contains the keyword | Present in at least one | SEO score |
| At least one image | Whether the draft contains any image | 1 or more | SEO score |
| Image alt text | Images carrying a non-empty alt attribute | Every image has one | SEO score |
| Substantial length | Total word count | 300 words or more | SEO + content score |
| Paragraph structure | Number of distinct paragraphs | 5 or more | Readability + SEO |
The content score is the sum of eight weighted checks: 300 words (+15), 800 words (+10), 1,500 words (+10), three headings (+15), five paragraphs (+10), one image (+10), keyword density in range (+15), and Flesch 50 or above (+15). Note that an empty draft still scores 15, because Flesch on no text returns a perfect number — which is exactly why nothing is shown until you have written 50 words.
Built for the draft that is nearly done
This is a last-mile tool. It is most useful on writing that already exists.
Writers finishing a piece
Check structure, readability, and keyword placement before you hand it over, without opening another subscription.
Editors reviewing submissions
Get an objective read on length, structure, and clarity in seconds, then spend your attention on the argument instead.
SEOs auditing a page
Compare a live page against the current top 10 for its target term and see what the ranking set covers that you don't.
Anyone editing AI output
AI drafts run long and even. The hard-sentence and structure checks surface exactly where the rhythm went flat.
How this compares to the paid tools
The dedicated content optimizers are good products. They are also priced for agencies. Here is where the free tool matches them and where it plainly doesn't.
| Surfer SEO | NeuronWriter | seotools.pro |
|---|---|---|
| Use it without an account | ||
| Instant scoring with no per-use cost | ||
| Reads the live top 10 | ||
| Shared term list with targets | ||
| Every scoring threshold published | ||
| Spelling and grammar | ||
| AI rewriting and fixes | ||
| Import a page by URL |
Content optimizer questions answered
The scoring half is free and unlimited — paste a draft and it scores instantly, as many times as you like, because that computation happens in your browser and costs us nothing. The SERP analysis reads ten live pages and runs them through a model, so that one is capped at 3 per day without an account.
Unlock premium features for better results
Remove the daily limit, export your results and start risk-free.
- Unlimited daily scans
- 40+ SEO & content tools
7-day free trial · cancel anytime
Ready to Dominate
Search Results?
Create an account and try every feature free for 7 days. Our public tools stay free forever.
Trusted by 10,000+ marketers worldwide
Join the SEOs, agencies and business owners who grow their search traffic with seotools.pro.
- Happy customers
- 2,972+
- Happy customers
- Domains optimized
- 6,895+
- Domains optimized
- URLs audited
- 2.4M+
- URLs audited
- User rating
- 4.9/5
- User rating