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101Tool
Free browser-based API Studio, PDF optimizer, JSON code generator, and developer toolkit.
apideveloper-toolspdfjsonproductivity
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Editor's Take
Curated by Startup List team101Tool is a lightweight utility platform for developers and small teams. Its API Studio supports REST, GraphQL and WebSocket workflows, multi-request tabs, environments, tests, variable extraction, collection runners, Postman Collection imports and OpenAPI imports. It also provides local PDF optimization, JSON-to-TypeScript, Go and Python Pydantic code generation, and practical URL, Base64, ASCII, color, hexadecimal and text conversion tools. The core tools are free and work without signup or installation, with Korean and English interfaces.
Key Highlights
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Developer Tools
Category classification
Listed Jul 2026
On Startup List since launch
What's Great
- ✓Free without signup
- ✓browser-based
- ✓local PDF processing
- ✓bilingual interface
- ✓multiple developer utilities
What Could Improve
- ✗Browser CORS restrictions may affect some APIs
- ✗advanced team sync requires a connected workspace
Use Cases
Software Development
Accelerate your development workflow with AI-powered code generation, debugging, and refactoring.
Video Production
Generate and edit professional video content with AI-powered tools and effects.
Team Productivity
Streamline workflows, automate repetitive tasks, and boost team output.
Best For
- •Founders in Developer Tools who need a practical tool for execution
- •Teams that want faster output with less operational overhead
- •Operators looking for actionable insights and repeatable workflows
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101Tool FAQs
What is 101Tool best used for?
Free browser-based API Studio, PDF optimizer, JSON code generator, and developer toolkit.
Is 101Tool suitable for early-stage startups?
101Tool can be suitable for early-stage teams, especially when speed and focused execution matter more than large team complexity.
How does 101Tool compare to alternatives?
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