Dust PDF upload failing during a conversation?
Compress your PDF instantly using the tool below — fixes the 50MB data file limit error.
🔒 Files never leave your device⚡ Instant processing in browser💸 100% free — no signup
📄
Drop your PDF here to fix upload errors
or click to select file — PDF only
Target size (optional)
or leave blank to compress as much as possible
⚡ File Size Limits (Quick Fix)
•Dust limits PDF and data file uploads to 50MB per file during conversations.
•Dust image uploads are limited to 5MB per file.
•Dust code files, CSV, TSV, and XLSX files share the same 50MB per-file limit as PDFs.
•The 50MB limit applies to files uploaded during conversations for analysis or data processing in Dust.
👉 Fix: Compress your file below the required limit using the tool above.
About this tool
Dust upload failures during conversations are almost always caused by exceeding the 50MB data file limit. Scanned PDFs and image-heavy documents are the most frequent offenders. Compressing the PDF below 50MB resolves the error and ensures Dust can process the document for AI analysis.
How to use this tool
Select or drag and drop your file into the tool above.
Adjust the settings or target size as needed for your specific requirement.
Wait a moment while your file is processed directly in your browser.
Download the final file safely to your device.
💡 Good to know
→Dust limits PDF and data file uploads to 50MB per file during conversations.Dust Docs ↗
→Dust image uploads are limited to 5MB per file.Dust Docs ↗
→Dust code files, CSV, TSV, and XLSX files share the same 50MB per-file limit as PDFs.Dust Docs ↗
→The 50MB limit applies to files uploaded during conversations for analysis or data processing in Dust.Dust Docs ↗
The most common cause is exceeding the 50MB data file limit. Compress your PDF below 50MB and retry.Source: Dust Docs ↗
What causes a Dust upload error?+
File exceeds 50MB (data files including PDF, DOC, TXT, JSON), or image exceeds 5MB. Compress the file to resolve the error.Source: Dust Docs ↗
How do I fix a Dust upload failed error?+
Compress your PDF below 50MB using the tool above. If uploading an image, compress it below 5MB.Source: Dust Docs ↗
What file types does Dust support for conversation uploads?+
Data files (PDF, DOC, TXT, JSON) up to 50MB. Images up to 5MB. Code files up to 50MB. Delimited files (CSV, TSV, XLSX) up to 50MB.Source: Dust Docs ↗
Does compressing a PDF affect Dust's data processing?+
No. Dust reads the text layer of the PDF. Compressing image quality reduces file size without affecting the text content used for AI analysis and data processing.Source: Dust Docs ↗
🔒 Files stay on device·🆓 Free forever·📵 No signup required