AI Text Tools
Summarise, rewrite and simplify text, extract keywords, explain JSON and read text in images.
11 tools · most run in your browser; the rest say what they send
Popular
LLM Token Counter
Estimate BPE tokens, context limits, and API costs for GPT-4o, Claude, and Gemini.
AI Prompt Optimizer
Build structured XML system prompts with role isolation and negative rules.
AI Text Rewriter
Rewrite text in a professional, friendly, concise or formal tone.
Optional cloud mode
All AI Tools tools
AI Code & Formula Explainer
Plain-English explanations of formulas, calculations and code.
Optional cloud mode
AI Function Calling Schema
Build OpenAI Structured Output and Anthropic Tool Call JSON schemas.
AI JSON Explainer
Get a plain-English walkthrough of what a JSON payload contains.
Optional cloud mode
AI Prompt Optimizer
Build structured XML system prompts with role isolation and negative rules.
AI Text Rewriter
Rewrite text in a professional, friendly, concise or formal tone.
Optional cloud mode
LLM Token Counter
Estimate BPE tokens, context limits, and API costs for GPT-4o, Claude, and Gemini.
Prompt & Context Cleaner
Strip markdown, HTML, comments, and mask PII to reduce token consumption.
About these tools
These tools handle the text jobs that eat time: cutting a long report down to its key points, changing the tone of an email, turning legal or technical writing into plain English, pulling the main keywords out of an article, explaining what a JSON payload or a formula does, and copying the text out of a screenshot or scan.
By default everything runs in your browser. The text tools use fast algorithmic language processing — sentence ranking, keyword scoring and rewrite rules rather than a large language model — so nothing you paste is uploaded. Image to Text reads pictures with Tesseract OCR, also on your device.
Each tool also has an optional cloud mode powered by Google's Gemini model, for harder cases such as handwriting or long, nuanced text. It stays off until you choose it, and the tool tells you that your input will be sent to Google before you do.