Overview
Chrome Goldmine is a curated research database of 9,656 expired Chrome extensions, designed to help indie hackers and solo builders find profitable rebuild opportunities. It includes revenue estimates, competitor analysis, and rebuild difficulty scores, all delivered through an interactive Notion database and CSV export. The product is a one-time purchase with lifetime updates, targeting those who want to skip manual research and jump straight into building.
Next3D Convert is a free, browser-based 3D model converter that supports over 30 formats, including OBJ, STL, GLTF, GLB, FBX, and CAD files. It processes all conversions locally in the browser, ensuring privacy and speed. The tool is aimed at creators, developers, and ecommerce teams who need quick format conversions without uploading files to a server.
Feature Comparison
| Feature | Chrome Goldmine | Next3D Convert |
|---|---|---|
| Primary Purpose | Database of expired extensions for idea validation | 3D model format conversion |
| Target Audience | Indie hackers, solo SaaS founders, vibe coders | 3D creators, developers, makers, ecommerce teams |
| Core Deliverable | Notion database with 9,656 extensions, CSV, guides | Web-based converter with 30+ formats |
| Pricing | One-time $23.20 (launch discount) | Free |
| Data Processing | Cloud-based (Notion/Gumroad) | Local browser processing |
| Updates | Quarterly updates | No updates needed |
| Support | 30-day money-back guarantee | No formal support |
| Technical Requirements | Notion account for full access | Modern browser with WebGL |
Pricing
Chrome Goldmine is priced at $23.20 (regular $29) as a one-time payment. This includes lifetime access to the database, quarterly updates, and a 30-day money-back guarantee. The purchase is processed via Gumroad, and buyers get instant access to the Notion database, CSV export, quick start guide, and premium report.
Next3D Convert is completely free. There are no hidden costs, no file size limits, and no conversion quotas. Users can convert as many files as they need without signing up or paying anything.
Pros and Cons
Chrome Goldmine
Pros:
- Extensive database of 9,656 expired extensions with revenue estimates
- Includes competitor analysis and rebuild difficulty scores
- One-time payment with lifetime updates and a 30-day guarantee
Cons:
- Requires Notion for full functionality, which may have a learning curve
- Revenue estimates are projections, not guarantees
Next3D Convert
Pros:
- 100% free with no limits or quotas
- Privacy-first: files processed locally in the browser
- Supports 30+ formats including CAD and game formats
Cons:
- No revenue or market data; purely a conversion tool
- Limited to browser-based processing; may be slower for very large files
Verdict
Choose Chrome Goldmine if you're an indie hacker or builder seeking validated product ideas with revenue potential. Choose Next3D Convert if you need a free, private, and versatile 3D file converter for your projects. They serve entirely different purposes, so the best choice depends on your immediate needs.