Complete guide to using 522 free online tools. Learn about developer tools, text processors, file converters, and data generators — all running securely in your browser with zero signup, zero uploads, and unlimited usage.
Last updated: March 2026
Browse tools across 4 categories — Developer (53 tools for JSON, Base64, regex, hashing), Text (36 processors for formatting, diff, word count), Converter (151 tools for file format, unit, color, and data conversion), and Generator (70 tools for passwords, UUIDs, QR codes, lorem ipsum). Use the search bar or Command Palette (Ctrl+K) to find any tool instantly.
Paste text, type directly, drag and drop files, or upload from your device. All processing happens entirely in your browser using client-side JavaScript — your data never leaves your device and is never uploaded to any server. This means your sensitive data stays completely private.
View your results in real time as you type. Copy to clipboard with one click, download in multiple formats, or share the tool with colleagues using its direct URL. Chain multiple tools together using the Workflow Builder at /workflow for complex multi-step operations.
Akousa offers 522+ free online tools organized into 4 categories: Developer (53 tools for JSON, Base64, regex, hashing), Text (36 processors for formatting and analysis), Converter (151 tools for file format, unit, color, and data conversion), and Generator (70 tools for passwords, UUIDs, QR codes, and lorem ipsum).
Every tool runs entirely in your browser — your data never leaves your device. No signup is required, there are no usage limits, and all tools are completely free forever. Use the Workflow Builder to chain tools into automated multi-step pipelines.
Developer — 53 tools for JSON formatting, Base64 encoding, regex testing, hashing, JWT decoding, and more coding utilities
Text — 36 processors for text formatting, diff comparison, word counting, case conversion, and content analysis
Converter — 151 tools for converting between file formats, units, colors, currencies, and data types
Generator — 70 tools for generating passwords, UUIDs, QR codes, lorem ipsum, mock data, and more
Instant Processing
All tools deliver results in real time as you type — no waiting for server responses
Export & Download
Copy results to clipboard or download in multiple formats with a single click
Mobile Ready
Fully responsive design works perfectly on smartphones, tablets, and desktop
Keyboard Shortcuts
Use Ctrl+K to find any tool instantly, plus tool-specific shortcuts for power users
All 522 tools process your data directly in the browser using client-side JavaScript. Files, text, and other inputs are never uploaded to any server. This means even sensitive documents, passwords, and private information are completely safe to process. We cannot see, access, or store anything you work with.
Games Documentation
Play 156 free browser games with achievements and multiplayer
Developer API Reference
Access tools programmatically via the Developer API
Embed Widgets Documentation
Embed tools on your website with customizable iframes
Workflow Builder Documentation
Chain tools into automated multi-step pipelines
Akousa