Bulk PDF Compressor — Compress Multiple PDFs at Once, Free
Drop up to 25 PDFs and download them all back as a single zip — fully compressed, no watermarks, no signup. Built for accountants, students, and anyone tired of compressing one file at a time.
Key Features
Process up to 25 PDFs per batch
50 MB per file size limit
No watermarks added to compressed files
No account required
Files auto-deleted within 1 hour
HTTPS encryption for all transfers
How It Works
Upload up to 25 PDFs at once via drag-and-drop
Each file is re-saved with optimized object streams via pdf-lib
Compressed PDFs are streamed back as a single zip archive
Per-file size savings shown in a table after processing
All uploads and temporary outputs are deleted within 1 hour
Frequently Asked Questions
How many PDFs can I compress at once?
Up to 25 PDFs in a single batch. For larger batches, just process them in groups — each batch is fully independent.
Will the compressed PDFs lose quality?
Text remains crisp at all times. Embedded images may be slightly recompressed, but for most documents the visual quality difference is imperceptible.
How big can each PDF be?
Each file can be up to 50 MB. The total batch can therefore be up to 1.25 GB, though most users compress 5–25 small files at once.
Do you keep my files?
No. Both your uploaded PDFs and the temporary compressed outputs are deleted from our servers within 1 hour.