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Files in ZeroTwo serve two distinct purposes: immediate analysis in a chat, and persistent storage in your Files Library. You can attach a file to a message for instant AI processing, or access previously uploaded files from /files and re-attach them to any future conversation.

Two Ways to Use Files

Attach to a chat — click the paperclip icon or drag-and-drop a file onto the chat input. ZeroTwo processes the file and responds in context of your message. Best for one-off analysis. Files Library at /files — every file you upload is automatically saved to your library. Browse, search, filter, and re-attach any past file to a new chat without uploading it again. Best for reference documents, templates, and data you use repeatedly.

What ZeroTwo Does with Your Files

The capability ZeroTwo applies depends on the file type:
File CategoryWhat ZeroTwo Does
Documents (PDF, DOCX, PPTX, XLSX, etc.)Full text extraction, Q&A, summarization, translation
Code (JS, TS, PY, GO, and more)Review, explain, refactor, identify bugs, generate tests
Data (CSV, JSON, Parquet, etc.)Analyze patterns, compute statistics, generate visualizations
Images (PNG, JPG, GIF, WEBP, etc.)Vision analysis — describe content, OCR text extraction, visual Q&A
Audio (MP3, WAV, M4A, etc.)Whisper transcription followed by discussion and summarization
Video (MP4, MOV, WEBM, etc.)Frame extraction + vision analysis — describe scenes, find moments
Notebooks (IPYNB, Rmd)Full cell and output reading — explain code, methodology, results

Upload Limits

LimitFree PlanPro+
Files per message1Up to 10
Max file size50 MB50 MB
Max video file size50 MB200 MB
Upload timeout60 seconds60 seconds
All plans support file uploads. Pro and higher plans allow up to 10 files per message and support larger video file uploads up to 200 MB.

Common Use Cases

Document Q&A

Upload a PDF, DOCX, or presentation and ask questions: “What are the key findings in section 3?” or “Summarize the executive summary.” ZeroTwo reads the full document and answers in context.

Code Review

Attach a code file and ask: “Review this for bugs,” “Explain what this function does,” or “Refactor this using modern patterns.” ZeroTwo reads the entire file, not just a snippet.

Data Analysis

Upload a CSV or JSON file and ask: “Which product category had the highest growth from Q1 to Q3?” or “Show me a summary of this dataset.” ZeroTwo reads the data structure and analyzes it.

Audio Transcription

Attach a meeting recording (MP3, WAV, M4A) and ask: “Transcribe this and list the action items.” Whisper handles the transcription automatically. Works in multiple languages.

Image Analysis

Upload a screenshot, photo, or chart image and ask: “What does this chart show?” or “Extract all the text from this screenshot.” Vision AI describes content and reads text (OCR).

Video Description

Attach an MP4 or MOV file and ask: “Describe what happens in this video” or “What steps does the presenter demonstrate?” ZeroTwo extracts frames and applies vision analysis.

Files Library

Every file you upload is automatically saved to your Files Library at /files. From there you can:
  • Search files by name
  • Filter by type (Documents, Images, Audio, Video, Code, Data)
  • Sort by upload date or file size
  • Re-attach any file to a new chat without re-uploading
  • Download files back to your device
  • Delete files you no longer need
Use the Files Library to build a personal knowledge base. Upload reference documents, style guides, code templates, or data files once — then pull them into any conversation with a few clicks.

Privacy

Your uploaded files are stored in per-account Supabase storage, encrypted at rest. Files are private to your account — no other user can access them. ZeroTwo does not use your uploaded files to train models. Files uploaded within a project are scoped to that project.

Files Pages

Upload Files

How to attach files using the paperclip icon or drag-and-drop.

Files Library

Browse, search, re-attach, and manage all your uploaded files.

Supported File Types

Full list of supported formats and how ZeroTwo processes each one.

Retention and Storage

How files are stored, how long they persist, and how to delete them.

Troubleshooting

Fix upload errors, missing analysis, and library issues.