SEO Bookmarklets:

• Open in Google Search Console — open the GSC performance report for a current page
• Page links — show external and internal links of a page with anchors and rel
• Copy HTML to clipboard — copy the rendered HTML of the current page to clipboard
• Copy page to clipboard — copy all rendered text content (including hidden) of the current page to clipboard
• Unique words ratio — calculate the ratio of unique words on a page
• Show hidden content — show all hidden content on a page
• Extract synonyms from SERP — make a sorted list of all highlighted words (synonyms and closely related terms) from Google's search results

Free Online SEO Tools:

• Multiply keywords — concatenate every keyword from list A with every keyword from list B
• Subtract lines — subtract (remove) list B lines from list A lines (for keywords, domains, URLs and etc)
• Unique words diff — show unique words present in the first text, but not in the second text
• SimHash calculator — calculate the similarity between two texts using SimHash and Hamming distance algorithms
• NLP entities extractor — extract NLP entities from a text using Google NLP API
• Semantic ranker — get semantic rankings of text documents based on a query
• Document-query relevance with embeddings — calculate a matrix of cosine similarities between vector embeddings of queries and documents
• Embeddings clustering — cluster documents using embeddings and agglomerative algorithm

Hobbies:

• RC Plane Wing Rib Generator — free online tool to generate custom RC airplane wing ribs model for 3D printing

Follow the author on Twitter: @ugnich.