PDF2Brain

PDF2Brain

Batch Compress PDF

Upload multiple PDFs and reduce file size — without noticeably degrading image quality.

Ready to compress

Ready to compress

Reduce PDF file size by optimizing structure and removing unused data. Upload one or many files and download smaller copies.

Up to 50 files per batch · 1 credits per input file

Compress PDF Online — Reduce PDF File Size

Reduce PDF file size for email, uploads, and storage without installing desktop software. Upload one or many PDFs, choose Standard or Maximum compression, and download smaller files. PDF2Brain optimizes structure and embedded assets to shrink files while keeping readability.

Key features

  • Batch compress multiple PDFs in one session
  • Standard mode preserves image quality; Maximum mode targets smaller output
  • Per-file before/after size comparison in results
  • In-memory processing — files are not stored long-term
  • Fast compression for reports, scans, and image-heavy PDFs

Common use cases

  • Shrink large PDFs before emailing or uploading to portals
  • Reduce storage size for document archives
  • Compress scanned PDFs that are too heavy to share
  • Optimize PDFs before merging or splitting

Frequently asked questions

Will compression make my PDF unreadable?
Standard mode focuses on structure cleanup and light optimization to preserve visual quality. Maximum mode applies stronger compression when you need the smallest possible file.
Can I compress multiple PDFs at once?
Yes. Upload several files, pick a compression mode, and download each optimized PDF or all results together.
Is online PDF compression secure?
Files are processed temporarily for your session and removed after download. PDF2Brain does not sell or share your documents.