What file types and sizes are supported for document uploads?

The platform accepts a wide range of file types for building documents. Here is the complete list with size limits:

Documents (up to 20 MB)

• PDF (.pdf) — up to 10 MB
• Microsoft Word (.doc, .docx)
• Plain text (.txt)
• Rich Text (.rtf)
• OpenDocument Text (.odt)

Spreadsheets (up to 20 MB)

• Microsoft Excel (.xls, .xlsx)
• CSV (.csv)
• OpenDocument Spreadsheet (.ods)

Presentations (up to 20 MB)

• Microsoft PowerPoint (.ppt, .pptx)
• OpenDocument Presentation (.odp)

Images (up to 5 MB)

• JPEG (.jpg, .jpeg)
• PNG (.png)
• GIF (.gif)
• BMP (.bmp)
• WebP (.webp)
• Maximum dimensions: 10,000 × 10,000 pixels

Archives (up to 50 MB)

• ZIP (.zip)
• TAR (.tar)
• GZ (.gz)
• 7-Zip (.7z)
• Archives are scanned for security — maximum 1,000 files inside, no zip bombs allowed

Other (up to 20 MB)

• JSON (.json)
• XML (.xml)
• Markdown (.md)

Security checks applied automatically

• File signature (magic bytes) verification — the system checks that the file content matches its extension
• Minimum file size of 10 bytes (empty files are rejected)
• Path traversal protection (filenames with ".." or absolute paths are blocked)
• Optional malware scanning via ClamAV if configured
• Duplicate detection via SHA256 hash — if you upload the same file twice, the system reuses the existing copy

If your upload is rejected, check: Is the file within the size limit? Is the file type in the supported list above? Is the file corrupted or empty?