AI Tools
68 tools — AI writing, code, PDF and audio tools. Free, no signup.
Quick picks
PDF AI
30 toolsPDF OCR
Make scanned PDFs searchable — adds an invisible text layer you can copy & search
AI PDF Summarizer
Summarize long PDF documents into concise key points with AI
AI PDF Chat
Chat with your PDF documents and ask questions with AI
AI PDF Translator
Translate entire PDF documents to any language using AI
AI PDF Notes Generator
Generate structured study notes from PDF documents with AI
AI PDF Flashcards
Generate study flashcards from PDF content using AI
AI PDF Quiz Generator
Automatically generate quizzes and questions from PDF content
AI PDF Mindmap
Generate a visual mind map from PDF document structure with AI
AI PDF Metadata Generator
Auto-generate SEO-friendly PDF metadata and keywords with AI
AI PDF Cleaner
AI-powered cleanup of scanned PDFs — remove artifacts and noise
AI PDF Auto Tagging
Automatically categorize and tag PDF documents using AI
Scan to PDF OCR
Convert a scanned image or PDF into a searchable PDF with OCR
Handwriting OCR
Extract and digitize handwritten text from PDF documents
Multi-language OCR
Extract text from PDFs in 100+ languages with OCR
OCR PDF to Word
Use OCR to convert scanned PDF to editable Word document
OCR PDF to Excel
Extract tables from scanned PDFs to Excel using OCR
OCR PDF to Text
Extract plain text from scanned PDF files using OCR
OCR Table Extractor
Extract tables from scanned PDF pages using intelligent OCR
OCR Math Extractor
Recognize and extract mathematical equations from scanned PDFs
OCR PDF Translator
OCR and translate scanned PDF documents in one step
AI Data Extractor
Extract structured data from PDF invoices and forms using AI
AI PDF Comparator
Compare two PDF versions and highlight differences using AI
PDF Sentiment Analyzer
Analyze the sentiment and tone of PDF text — free, no signup
AI PDF Classifier
Auto-classify and categorize PDF documents by content using AI
AI Smart Redactor
AI-powered automatic detection and redaction of sensitive PII data
AI PDF Reviewer
AI-powered document review with inline suggestions and comments
AI PDF Paraphraser
Rewrite and paraphrase PDF content using AI language models
PDF Keyword Extractor
Extract key terms and phrases from a PDF — free, no signup
AI Citation Extractor
Extract and format citations and references from academic PDFs
PDF Language Detector
Detect the language(s) of text in a PDF — free, no signup
Audio AI
9 toolsAI Voice Cleaner
AI-powered voice cleanup and restoration
AI Podcast Enhancer
AI-powered podcast audio enhancement and mastering
AI Speech Enhancer
AI-powered speech clarity and quality enhancement
AI Audio Upscaler
Upscale low-quality audio to high quality with AI
AI Voice Clone
Clone and replicate any voice with AI technology
AI Voice Generator
Generate realistic AI voices from text
AI Lyrics Generator
Generate song lyrics with AI based on your style
AI Music Generator
Generate original music tracks with AI
AI Beat Generator
Generate custom beats and rhythms with AI
AI Dev Tools
9 toolsAI Code Generator
Generate code in any language from plain English prompts
AI Regex Generator
Generate regular expressions from plain English descriptions
AI SQL Generator
Generate SQL queries from plain English questions
AI Commit Message Generator
Generate descriptive git commit messages from code diffs
AI README Generator
Generate professional README.md files for any project
AI API Documentation Generator
Generate API documentation from code or endpoints
AI Test Case Generator
Generate unit test cases from function definitions with AI
AI Bug Explainer
Paste buggy code and get a clear explanation of the issue
AI Error Debugger
Paste error messages and get step-by-step fix instructions
AI Text Tools
20 toolsAI Text Generator
Generate high-quality text content on any topic with AI
AI Paragraph Writer
Write full paragraphs from a single sentence idea with AI
AI Sentence Rewriter
Rewrite any sentence while preserving meaning with AI
AI Essay Writer
Generate full structured essays on any topic with AI
AI Story Generator
Generate creative short stories from a prompt with AI
AI Blog Generator
Generate full blog posts with intro, body, and conclusion
AI Email Writer
Write professional emails from bullet points with AI
AI Caption Generator
Generate engaging social media captions with AI
AI Hashtag Generator
Generate trending hashtags for any topic or niche
AI Bio Generator
Generate professional bios for Twitter, LinkedIn and more
AI Quote Generator
Generate inspirational quotes on any topic with AI
AI Grammar Fixer
Fix grammar mistakes and improve sentence structure with AI
AI Spell Checker
Detect and fix spelling errors in any text using AI
AI Tone Changer
Change text tone to formal, casual, friendly or professional
AI Humanizer
Make AI-generated text sound more natural and human-written
AI Summarizer
Summarize long articles and documents with AI in seconds
AI Expand Text
Expand short text into full detailed paragraphs with AI
AI Shorten Text
Shorten long text without losing key information using AI
AI Simplify Text
Simplify complex text to easy-to-understand language with AI
AI Translate Text
Translate text to 100+ languages with AI accuracy
About AI Tools
ToolHub’s AI tools bring language-model and generative-AI capabilities into everyday tasks — writing and rewriting text, generating code from plain English, summarizing or chatting with PDF documents, and enhancing or generating audio.
These tools are designed for quick, single-purpose use: generate an essay outline, rewrite an awkward sentence, get SQL from a plain-English question, summarize a long PDF report, or clean up noisy audio — without needing a subscription to a dedicated AI writing or audio platform.
As AI-powered categories grow across ToolHub (image, PDF, video, audio, text and developer tools), this hub collects all of them in one place so it’s easy to find the right AI tool for a specific format.
Frequently asked questions
Are ToolHub AI tools really free?
Most AI tools are free with no signup. A smaller set of advanced AI features (like voice cloning or lyrics-video generation) are marked Pro.
What can the AI tools do?
They cover text generation and rewriting, code and SQL/regex generation from plain English, PDF summarization and chat, and AI-powered audio enhancement and voice generation.
Can I chat with a PDF document using AI?
Yes — the AI PDF Chat tool lets you ask questions about an uploaded PDF and get answers grounded in its content.
Is my data used to train AI models?
Uploaded content is processed only to generate your result. See our privacy policy for full details on data handling.