Compress multiple PDFs at once
When every file in a pack must fit the same upload ceiling, prepare them together. UnderLimit accepts up to 20 PDFs per batch with clear per-file and total size caps.
Drop up to 20 PDFs here
Max 150 MB per file · 500 MB total
Files are scanned before analysis.
Real batch limits
Up to 20 PDFs, 150 MB per file, 500 MB total per batch. There is no “unlimited” claim—these caps keep processing predictable.
One-time Single Batch
Need just one batch? Single Batch lets you process up to 20 PDFs for a one-time £4.99 payment.
Background processing
After analysis and payment entitlement, compression can continue while you leave the tab. You receive email delivery and browser access to results.
Individual files and ZIP
Download completed files one by one or request a ZIP when several outputs are ready. Result links remain available for about 48 hours.
Shared or careful targets
Start with a shared preset (for example 10 or 25 MB). Adjust individual files after analysis when one scan needs a higher ceiling.
FAQ
- Can every file use a different target?
- You can set batch defaults and refine per file where the product UI allows. Always confirm each output before uploading to a portal.
- Is there an unlimited batch mode?
- No. The product cap is 20 PDFs and 500 MB total per batch.