All free AI prompt tools in one place

Here you can find every free AI prompt tool on PromptGenia, grouped by what you want to create. None of them require an account, and most run entirely in your browser.

Text

AI prompt generatorTurn a rough idea into a structured prompt for any AI Prompt checkerScore any prompt 0–100 and see what is missing System prompt generatorWrite instructions for chatbots, GPTs and AI assistants Product description generatorBriefs and copy for Shopify, Amazon, Etsy and Instagram AI text detectorEstimate whether a text reads as AI-generated AI humanizerMake AI drafts sound natural, then edit them yourself

By AI model

ChatGPT prompt generatorMarkdown-structured prompts tuned for ChatGPT Claude prompt generatorXML-structured prompts tuned for Claude Gemini prompt generatorClear labeled-section prompts tuned for Google Gemini DeepSeek prompt generatorGoal-first prompts for DeepSeek chat and reasoning Grok prompt generatorStructured prompts for Grok, with timeframe and sources

Image

Image prompt generatorOne idea, written in the syntax of eight image models Midjourney prompt generatorDescriptive phrases plus --ar, --stylize, --chaos and --no Nano Banana prompt generatorNatural-language prompts and photo edits for Gemini image Stable Diffusion promptsWeighted tags, a negative block and the right SDXL size Negative prompt generatorExclusion lists for SD, Leonardo, Midjourney --no and Flux Image to promptUpload a picture, get a prompt to recreate its look Image to JSON promptDescribe a picture as structured, editable JSON Two images to promptMerge a subject and a style from two pictures

Video & audio

Video prompt generatorShot, motion, sound and dialogue for 7 video models Veo 3 prompt generatorShots with sound effects and spoken dialogue for Veo 3 Sora prompt generatorStoryboard-style blocks for Sora 2 video and sound Kling prompt generatorAction-first prompts with camera, style and negatives Suno prompt generatorStyle of music line plus structure tags for your lyrics

Utilities

Image to text (OCR)Extract text from photos and screenshots in your browser Token counterEstimate tokens and API cost for any text

How the tool groups are organized

  • Text tools help you write and improve prompts for chat assistants: a prompt checker that scores clarity and structure, a system prompt builder, a product description brief, an AI text detector and a humanizer.
  • By AI model pages open the same prompt generator preset for one assistant, such as ChatGPT, Claude, Gemini, DeepSeek or Grok, with notes on what that model responds to best.
  • Image tools build prompts for image generators, write negative prompts and turn a reference picture into a prompt or a JSON description.
  • Video & audio tools structure shots, camera movement and sound for video models, and style plus song-section tags for music generation.
  • Utilities include a token counter and an image-to-text (OCR) tool for extracting text from screenshots and photos.

What runs locally and what uses AI

The builders, the prompt checker, the token counter, the OCR tool, the AI detector and the basic humanizer work locally in your browser, so the text you type is not sent to our server. A few optional features, such as Enhance with AI, image-to-prompt with vision or the AI humanizer, call an AI provider only when AI mode is available on this site and you click the button. If you are new to the vocabulary used across these tools, the prompt engineering glossary explains terms like tokens, negative prompts and few-shot examples.