Zesheng ToolsA lightweight directory of browser-based tools. Built for fast loads, clear navigation, and everyday productivity.

Zesheng ToolsA lightweight directory of browser-based tools. Built for fast loads, clear navigation, and everyday productivity.

Online calculator · Zesheng Tools

Online calculator

Other Tools

Online

Simple four-function calculator with keyboard-style buttons.

Only digits and + - * / ( ) . are accepted. Expressions are validated before evaluation. Runs locally in your browser.

What it does

Basic + − × ÷ operations with parentheses; expressions are validated before evaluation.

Social behavior style quiz with eight local result profiles (entertainment only).

General in-browser converters for images and text encodings.

Inspect media URLs locally; does not provide copyrighted download bypass.

Freehand draw on a canvas and export your sketch as PNG.

Hand-drawn style whiteboard with rough strokes and PNG export.

Browse curated ChatGPT-style prompts and fill in placeholders to copy.

Build structured coding prompts for debugging, refactors, or documentation.

Parse browser User-Agent strings into browser, OS, device, and engine fields.