Understanding DocuSlicer's file size limits and how to work with large PDFs
4 MB
Per individual PDF file
Adobe PDF documents only
DocuSlicer runs on Vercel's serverless platform, which has a 6MB request body limit. Since files are encoded during upload (increasing size by ~33%), we set a 4MB limit to ensure reliable processing.
Use online PDF compressors to reduce file size before uploading to DocuSlicer.
Break your large PDF into smaller chunks, process each section, then merge the results.
For very large files or batch processing, desktop applications offer more flexibility.
Remove unnecessary images, reduce image quality, or convert to grayscale to reduce file size.
Right-click your PDF and check "Properties" to see the file size before uploading.
For multiple large files, process them one at a time rather than all at once.
We're working on supporting larger files and will update limits as our infrastructure grows.