Free Online Tools
Fast, private, no signup. All processing happens in your browser.
Prompt Generator
aiVisual prompt workflow builder — create action blocks, connect them on canvas, generate step-by-step instructions
Base64
Developer ToolsEncode and decode Base64 — text, files, URLs. Fast, private, browser-based
Json
Developer ToolsFormat, validate, and explore JSON with syntax highlighting, tree view, and JSONPath
Json Formatter
Developer ToolsFormat, validate, and explore JSON with syntax highlighting, tree view, and JSONPath
Json Path
Developer ToolsFormat, validate, and explore JSON with syntax highlighting, tree view, and JSONPath
Json Validator
Developer ToolsFormat, validate, and explore JSON with syntax highlighting, tree view, and JSONPath
Markdown
Developer ToolsWrite and preview Markdown with live split-view, toolbar, syntax highlighting, and export
Mermaid
Developer ToolsCreate and edit Mermaid diagrams with live preview, validation, theme switching, and SVG/PNG export
Regexp
Developer ToolsBuild, test, and debug regular expressions with live matching, syntax highlighting, and match details
Token Counter
Developer ToolsCount LLM tokens for GPT-4o, Claude, Gemini, Llama with cost estimation
Url Decoder
Developer ToolsEncode and decode URL components — encodeURIComponent, encodeURI, and back
Url Encoder
Developer ToolsEncode and decode URL components — encodeURIComponent, encodeURI, and back
Powerpoint
productivityView and edit PowerPoint (PPTX) presentations in your browser. Drag & drop, fullscreen viewer, text editing, export
Password Generator
securityGenerate strong, cryptographically secure passwords with customizable rules
Word Counter
Text ToolsCount words, characters, sentences, paragraphs and reading time
What is UseTool?
UseTool is a collection of free browser-based utilities designed for everyday tasks. Every tool runs entirely in your browser — your files and data never leave your device. There are no accounts to create, no subscriptions to manage, and no ads to dismiss.
We build tools that load fast and work on any device. Whether you need to count words in an essay, convert an image format, generate a secure password, or analyze JSON data, UseTool provides a clean, focused interface for each task. Each tool is available on its own subdomain, so you can bookmark exactly what you need.
Privacy is not a feature we bolt on — it is the architecture. Because every tool is a static site with no backend server, it is technically impossible for us to access your data. There are no cookies, no tracking scripts, and no third-party analytics. Your work stays on your machine.
UseTool is free and always will be. We believe simple utilities should be accessible to everyone without barriers. The platform grows over time as we add new tools across categories like text processing, image editing, developer utilities, calculators, and more. Every tool is open to use without limits — no daily quotas, no watermarks, no feature gates.