Bulk PDF Compressor
Upload multiple PDFs and download one ZIP of compressed files. We re-save each PDF with object-stream optimization—typically 15–25% smaller. Up to 10 PDFs per run; first 5 pages per file free without signup.
A bulk PDF compressor lets you reduce the file size of many PDFs in one go. Instead of compressing one file at a time, you upload multiple PDFs (up to 10 per run in our free tool), and we apply the same object-stream optimization to each one and pack the results into a single ZIP for download. That saves time when you have dozens of documents to shrink for email, storage, or upload limits. We use the same non-destructive compression as our single-file PDF Compressor—typically 15–25% size reduction on text-heavy PDFs with no loss of quality. The first 5 pages of each file are free without signup; for full-document and larger batch runs, sign up for a free account. Your files are processed in memory and never stored.
Why Use Our Bulk PDF Compressor?
Compress many PDFs at once and download a single ZIP—same quality-preserving compression as our single-file tool.
Multiple PDFs, one ZIP
Upload up to 10 PDFs per run. We compress each with object-stream optimization and pack them into one ZIP so you download everything in a single file.
No quality loss
Same as our single-file compressor: we re-encode with object streams only. No image downscaling or content removal—text and graphics stay at full quality.
Private & secure
All PDFs are processed in memory and never stored. We don’t keep or log your files. Download the ZIP and close the tab when done.
How It Works
Compress many PDFs in two steps: upload multiple files, then download one ZIP.
Upload multiple PDFs
Drag and drop or select up to 10 PDFs. Each file can be up to 50MB. The first 5 pages of each are free without an account; sign in for full-document compression.
Download one ZIP
We compress each PDF with object-stream optimization and pack them into a single ZIP. Download the ZIP and extract the compressed PDFs locally.
How We Compare
See how DocLD’s bulk PDF compressor compares to other options for compressing multiple PDFs.
| Feature | DocLD | Adobe Acrobat | Free Online Tools |
|---|---|---|---|
| Compress multiple PDFs | Limited | ||
| Download as ZIP | Varies | ||
| No quality loss | Varies | ||
| Privacy (no storage) | |||
| Free tier | 5 pages/file free | Limited | |
| No sign-up required |
Popular Use Cases
Bulk compress PDFs for email, storage, and upload limits.
Email batches
Shrink many attachments at once so you can send them within size limits.
Portal uploads
Compress multiple PDFs before uploading to job portals, grant systems, or document portals.
Archive optimization
Reduce the size of many PDFs in an archive to save storage and speed up backups.
Legal & contracts
Compress batches of contracts or filings for sharing or e-signature platforms.
Reports & presentations
Shrink multiple reports or slide decks in one go for distribution.
Weekly/monthly batches
Regularly compress new PDFs (e.g. invoices, statements) and download as one ZIP.
Tips for Best Results
Get the most out of bulk PDF compression.
Up to 10 files per run
You can run the tool again for more PDFs. Each file is limited to 50MB; first 5 pages per file are free without signup.
Same as single-file tool
Compression is identical to our PDF Compressor—object-stream only, no quality loss. Use the single-file tool for one PDF.
Files are not stored
All PDFs are processed in memory and never saved. Download the ZIP and close the tab when done.
Larger batches with sign-in
Sign up for a free account to compress full documents and run larger or repeated batches.
Frequently Asked Questions
Need more document tools?
Sign up for free to unlock API access, full-document compression, and more batch tools. Explore all free tools.