About & limits

Tivra is a catalog of free browser tools for calculations, dates, text, development and file tasks. The catalog currently contains 436 tools; search by name or browse categories.

Each tool shows its inputs and examples before it runs. You can review the result and, depending on the tool, copy or download it. No account is required.

Most tools run in the browser. Some operations use external data or offer server processing; data transfer is explained before the operation.

Accuracy depends on the values provided, the browser and the data source. OCR can make mistakes; compression may not reduce a file; editing a PDF can invalidate digital signatures.