One free toolbox for everything AI
Write, code, plan, sell, hire, learn and chat — all powered by Google Gemini, all free, all server-rendered. No sign-up, no limits for casual use.
PromptHub AI Studio
12 specialized AI hubs
Each hub groups the tools for one job — pick a hub, use its tools, chain them together.
AI Chat
Free AI assistant — ask anything, get answers instantly.
Open hubAI Writer Studio
Blog posts, SEO meta tags & content rewriter.
Open hubAI Social Studio
Captions, hashtags, YouTube scripts & ad copy.
Open hubAI Email Studio
Cold emails, follow-up sequences & newsletters.
Open hubAI Code Lab
Generate, explain, debug code & optimize SQL.
Open hubAI Business Studio
Business names, plans, pitch decks & pricing.
Open hubAI SEO Studio
Keywords, content briefs, FAQ schema & product copy.
Open hubAI E-commerce
Product descriptions, listing titles & review replies.
Open hubAI Career Studio
Cover letters, resume summaries & interview prep.
Open hubAI HR Studio
Job descriptions, onboarding plans & references.
Open hubAI Learn Hub
Summaries, flashcards, quizzes & study plans.
Open hubAI Image Analyzer
Image to prompt & SEO alt text via Gemini Vision.
Open hubAI Fitness Studio
Workout plans, meal plans & home workouts.
Open hubAI Food Studio
Recipes from any ingredients, meal ideas & swaps.
Open hubAI Travel Studio
Itineraries, packing lists & destination guides.
Open hubAI Story Studio
Short stories, book outlines & catchy titles.
Open hubAI Product Studio
PRDs, user stories, roadmaps & prioritization.
Open hubAI Education Hub
Lesson plans, worksheets, tests & a free AI tutor.
Open hubAI Marketing Studio
Slogans, landing pages, press releases & campaigns.
Open hubAI Real Estate Studio
Listings, rental ads, staging & neighborhood guides.
Open hubAI Finance Hub
Budgets, savings, debt payoff & investing basics.
Open hubAI Excel & Data Studio
Excel formulas, data cleaning, regex & analysis plans.
Open hubPrompt Engineering
Classic prompt tools
The original PromptHub tools for building and refining prompts.
AI Prompt Generator
Create optimized, ready-to-use prompts for any task.
Use tool →Prompt Optimizer
Improve existing prompts for clearer, better AI outputs.
Use tool →Semantic AI Search
Find prompts by meaning and intent, not just keywords.
Use tool →Image Prompt Generator
Detailed prompts for Midjourney, DALL-E & Stable Diffusion.
Use tool →How to get the most out of the AI hubs
Four steps to go from idea to finished output.
Pick the right hub for your goal
Fill in a short form
Generate, copy and share
Reuse and combine
AI Tools & Hubs — FAQ
Answers to the most common questions.