On-page SEO tools for meta data, content and page structure
Free individual checks and generators · without registration
Check and edit text, headings, images and special document types. The tools provide comprehensible individual findings; you assess professional quality, search intentions and benefits in the context of your content.
Analyse and compare texts
- Content Check: Text Structure & ReadabilityChecks word count, text structure, readability approximation, and exact focus phrases in text or URL. Transparent key figures without a blanket quality rating.
- Readability checker in GermanAnalyses German texts with Flesch and LIX, marks long sentences and compares the revision with the initial status. Locally in the browser.
- Counting words and signsCounts words and characters directly in the inserted text, without uploading. Optionally check the text scope of a published URL.
- Text comparisonMarks added and removed words or lines between two text versions. With TXT import and change report, completely local.
- Duplicate Content CheckerCompare two texts or URLs using common four-word sequences. With similarity value and phrases; no plagiarism search throughout the web.
- SEO page comparisonCompares two websites: metadata, headings, main text, links and schema types – with target keyword and CSV export.
Prepare content and structure
- Headings CheckerChecks H1–H6, header hierarchy, missing or duplicate H1, blank headers, and typical structural problems.
- SEO briefing generatorCreate an author briefing from target group, search intention, questions and internal links and save it as a markdown.
- Lorem Ipsum GeneratorCreates blind text for website designs and layouts. Select paragraphs, sentences or an exact number of words and adopt them as text or HTML.
- Keyword CheckCheck URL and keywords: Main keyword and minor keywords in Title, Description, URL, H1, Headings and Text.
Prepare images for your website
- Image Alt CheckerCheck images of a URL for missing, empty or weak alt texts – helpful for SEO, accessibility and content QA.
- Image SEO CheckerChecks images for alt texts, filenames, dimensions, lazy loading, and weight notes.
- Image compressor and WebP converterCompresses PNG, JPG and WebP locally in the browser. Set image width and quality, compare sizes and download files individually or as ZIP.
- SVG optimizerRemoves unnecessary code from static SVG graphics. Compare the original and result together with the file size and download it locally.
Checking documents and product data
- PDF SEO-CheckerCheck PDF for free for title, readable text, links and file size. With PDF URL additionally evaluate HTTP status and X-Robots tag. Without registration.
- Google Shopping Feed CheckerCheck product feeds for missing information, duplicate IDs, pricing formats and identifiers.
- Product Variant SEO CheckerCompare up to six variants on product data, canonicals, group IDs and HTML pre-selection.
Then they join the exams.
Defining the objective and content
First, formulate which question the page should answer. A briefing can capture the topic, target group and structure; it does not replace independent research.
SEO briefing generatorExamining specific anomalies
Check headlines, readability, and recurring phrases. Numbers such as word number or readability index are indications, not a general quality mark.
Content Check: Text Structure & ReadabilityCompare the revised version
Compare old and new texts and check the publication. For images, file size, presentation and alternative text belong to different tasks.
Text comparison
Frequent questions
Is there an ideal text length for good rankings?
A fixed word count does not guarantee good rankings. The text should answer the task of the page in an understandable and sufficient way. Use word numbers for comparison and editing, not as a blanket quality goal.
Is a duplicate content comparison a plagiarism search?
No. The checker compares the entered texts or URLs. It does not search the entire web for matching content.
Checking the website in connection
The free SEO check examines up to 20 URLs and bundles findings and prioritized measures.