100% Free
All tools are completely free to use. No hidden fees, no credit card required. Start with free OCR, reference validation, and PaperCopilot workflows in your browser.
AI2Paper
Free AI-Powered Academic Tools
100% free tools for researchers, students, and academics. Read papers, validate references, and extract text in one ecosystem.
Chat with PDFs using PaperCopilot, extract text from images with our free OCR tool, validate academic references, and streamline your research workflow.
Why Choose AI2Paper?
AI-Powered
Powered by modern AI models, our tools help you read papers, extract text, validate references, and accelerate research workflows.
Privacy First
Your images and documents are processed securely and never stored. We respect your academic privacy.
Our Free Academic Tools
Featured · New Research Tool
PaperCopilot
Read and chat with academic PDFs in one workspace. Select passages, ask AI for explanations, translate difficult sections, and keep notes while reading.
What you can do
- ✓ Chat with PDF side-by-side
- ✓ Select text to ask or translate
- ✓ Local chat history and notes
- ✓ BYOK multi-model support
- ✓ Optimized for paper reading
Open PaperCopilot
Free DeepSeek OCR
Free - No SignupExtract text from images using advanced AI. Supports multiple images, math formulas, tables, and Markdown output.
- ✓ Multi-image batch OCR
- ✓ Markdown and LaTeX output
- ✓ 10 free uses per day with login
Try Free OCR Now
Free Reference Validator
100% FreeValidate references and citations for free. Check DOIs, verify publication details, and keep your bibliography accurate.
- ✓ Free DOI validation
- ✓ Citation format checking
- ✓ Batch processing and export
Validate References Free
Codon Magic
Fun & FreeTurn text into DNA codon sequences and create biology puzzles with bilingual support.
- ✓ Text to codon encoding
- ✓ Codon to text decoding
- ✓ Flashcards and saved cards
Try Codon Magic
SVG Themer
Free ToolRestyle scientific SVG charts with one click and export publication-ready figures.
- ✓ 35+ scientific color palettes
- ✓ Drag-to-reposition text
- ✓ Export SVG and PNG
Try SVG Themer
Frequently Asked Questions
Is AI2Paper really free?
Yes! AI2Paper offers free access to all tools. The OCR tool provides 10 free uses per day when you sign in with Google. If you have your own API key, you get unlimited free usage. The Reference Validator, Codon Magic, SVG Themer, and PaperCopilot are available for free use.
What is PaperCopilot?
PaperCopilot is an in-browser paper reading workspace. You can open a PDF, select text, ask AI to explain or translate a passage, and keep notes while reading. It is designed for fast academic reading rather than generic chat.
What types of images can the free OCR tool process?
Our free OCR tool supports PNG, JPG, JPEG, GIF, and WebP formats. It excels at extracting text from academic papers, handwritten notes, mathematical formulas, tables, and diagrams. Each image can be up to 20MB. The OCR engine is powered by DeepSeek and outputs plain text or Markdown with LaTeX math notation.
Do I need to create an account?
No account is required if you have your own API key. For free daily uses, you can sign in with Google to get 10 free OCR uses per day. The Reference Validator, Codon Magic, and SVG Themer require no login at all.
Is my data secure?
Yes. We do not store your uploaded images or extracted text. All processing is done in real-time, and your data is deleted immediately after processing. SVG Themer and Codon Magic run entirely in your browser — no data is sent to any server.
What chart formats does SVG Themer support?
SVG Themer works with any SVG file, including charts exported from matplotlib, ggplot2, seaborn, plotly, and other visualization libraries. You can change colors using 35+ scientific palettes (Nature, Science, JAMA, Lancet, and more), edit text and fonts, drag to reposition labels, and export as SVG or high-DPI PNG for publication.
How does the Reference Validator check citations?
The Reference Validator parses your reference list, extracts DOIs and metadata, and cross-checks them against public databases. It identifies incorrect DOIs, mismatched titles or authors, and formatting issues. You can process references in batch and export the corrected results.
What is Codon Magic used for?
Codon Magic is a fun educational tool that encodes text messages into DNA codon sequences using the standard genetic code table, and decodes them back. It is great for biology students, teachers creating classroom activities, or anyone who wants to create science-themed puzzles. It supports both English and Chinese.