Free Online Tools
Everything runs in your browser. No sign-ups. No data leaves your device.
AI Tools
AI Token Counter
LiveEstimate token counts and API costs across GPT, Claude, and Gemini models.
Open tool →AI Prompt Builder
LiveCraft structured prompts with role, task, format, tone, and constraints. Copy and use.
Open tool →AI Cost Calculator
LiveSet a monthly budget and compare ChatGPT, Claude, and Gemini plans side by side.
Open tool →Markdown Preview
LivePaste Markdown, see it rendered live. Copy the HTML output with one click.
Open tool →Text Diff Checker
LiveCompare two texts side by side with line-by-line diff highlighting.
Open tool →AI Writing Detector
SoonAnalyze text to estimate the likelihood of AI-generated content.
AI Translator
SoonTranslate text between languages using AI. Privacy-first, powered by on-device models.
Developer Tools
JSON Formatter
LivePaste messy JSON, get clean, syntax-highlighted output. Validates and shows errors inline.
Open tool →Password Generator
LiveGenerate strong, random passwords with customizable length and character types. Uses crypto-grade randomness.
Open tool →Word Counter
LiveCount words, characters, sentences, and paragraphs. Estimates reading time.
Open tool →Color Converter
LiveConvert between HEX, RGB, HSL formats with visual preview. Click to pick colors.
Open tool →Hash Generator
LiveGenerate MD5, SHA-1, SHA-256 hash values from text. Supports salt and HMAC.
Open tool →Image Compressor
SoonShrink image files without visible quality loss. Powered by Cloudflare Workers.
Want to suggest a tool? Let us know.