DD Keyword Combinator

Overview

DD Keyword Combinator is a marketing-focused tool that combines multiple keyword groups in various patterns to generate large volumes of keywords at once.

Put location names in Group 1, service names in Group 2 and modifiers in Group 3, and it auto-generates hundreds to tens of thousands of keywords like "Seoul interior contractor" or "Gyeonggi remodeling recommendations."

Use it to unearth low-cost niche keywords for search ads, optimize SEO content, generate AI prompt variations, and mass-produce product keywords for online stores.

Built in the Rust language, it processes even 100,000 combinations in under 100ms. No install, no ads, a single 3.9MB EXE.

Key features

1. Multi-group keyword input

• Supports up to 10 groups; enter keywords one per line in each group
• Real-time keyword count per group
• Freely edit group names
• Add or remove groups freely

2. Multiple combination patterns (the core feature)

• Set several combination patterns at once and generate all results in a single run
• Real-time estimated result count per pattern
• Freely reorder groups within a pattern

Examples:

• Pattern 1: Group1 + Group2 + Group3 → "Seoul interior contractor"
• Pattern 2: Group1 + Group2 → "Seoul interior"
• Pattern 3: Group3 + Group1 → "contractor Seoul"
• Pattern 4: Group2 + Group1 + Group3 → "interior Seoul contractor"

3. Separator / prefix / suffix

• Choose the separator between keywords: space, none, comma, hyphen, underscore, or custom input
• Add a prefix before and a suffix after every result in bulk
• e.g. prefix "[" + suffix "]" → "[Seoul interior contractor]"

4. Filtering and cleanup

• Deduplication: automatically removes identical keywords across all pattern results
• Sorting: automatic alphabetical sort
• Length filter: filter results by minimum/maximum character count
• Include/exclude filter: extract only keywords that contain or exclude specific words

5. Export results

• Copy to clipboard: one click to copy and paste straight away
• Save to file: export as TXT or CSV
• Line-ending format: choose CRLF (Windows) or LF (Unix)

6. Save / load projects

• Save your current working state as a JSON file
• Load a saved project and pick up where you left off
• Auto-save on exit, auto-restore on start (toggle on/off in settings)

7. Dark / light mode

• Auto-detects the Windows system theme (default)
• Manually switch between dark and light mode
• 6 accent colors: blue, green, purple, orange, red, teal

8. Keyboard shortcuts

• Ctrl+Enter or F5: run combination
• Ctrl+S: save results to file
• Ctrl+Shift+S: save project set
• Ctrl+O: load project set
• Ctrl+N: new project (reset)
• Ctrl+D: toggle deduplication
• Ctrl+,: open/close settings

Real-world use cases

Case 1: Finding niche keywords for search ads

• Group 1 (30 locations): Seoul, Gangnam, Songpa, Mapo, Gyeonggi, Suwon, Seongnam, ...
• Group 2 (10 services): interior, remodeling, construction, repair, build-out, ...
• Group 3 (8 modifiers): contractor, recommended, cost, quote, reviews, specialist, top-rated, affordable
• Pattern 1: Group1+Group2+Group3 → 2,400 / Pattern 2: Group1+Group2 → 300
• Result: about 2,700 niche keywords after deduplication (a few milliseconds)

Case 2: E-commerce product keywords

• Group 1 (brands): Nike, Adidas, New Balance
• Group 2 (products): sneakers, running shoes, trainers
• Group 3 (attributes): men's, women's, new, sale, popular
• → "Nike sneakers men's", "Adidas running shoes sale" and more — 45 keywords

Case 3: SEO content keywords

• Group 1 (topics): diet, exercise, fitness
• Group 2 (approach): methods, routine, meal plan, tips, results
• Group 3 (audience): beginners, office workers, women, men
• → "diet methods beginners", "exercise routine office workers" and more — 60 keywords

Case 4: AI prompt variations

• Group 1 (role): marketer, copywriter, data analyst
• Group 2 (task): write a blog post, generate ad copy, write a report
• Group 3 (tone): professional, friendly, persuasive
• → bulk-generate prompt variations

Recommended for

• Marketers running search ads on Naver or Google
• Bloggers who need SEO content keywords in bulk
• Sellers who need keyword combinations when listing store products
• Users who want to vary AI prompts in many ways
• Anyone still combining keywords by hand in Excel

How it differs from other keyword tools

How to use

1. Launch DD Keyword Combinator (no install needed)
2. Enter keywords into each group, one per line
3. Set the desired group order in the combination pattern
4. Add more patterns as needed to generate varied combinations
5. Configure the separator, prefix/suffix and filter options
6. Click the "Run combination" button or press Ctrl+Enter
7. Copy the results to the clipboard or save them to a file

Save a project set with Ctrl+Shift+S and load it with Ctrl+O.
With auto-save on, it saves automatically on exit and restores on start.

Performance

Specifications