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Explore Our Tools

Discover our collection of powerful tools to make your work easier. Visit 21k.tools for all available tools and resources.

Create short, shareable links instantly.

Merge, split, and edit PDF files easily.

convert units from one to another easily .

Convert between multiple file formats.

Resize and optimize images for any use.

Generate content with AI technology.

Calculate age in years, months, and days.

Calculate simple and compound interest.