# PDF Batch Compress

Compress multiple PDF files with image downsampling and optimization, packaged as ZIP

> Canonical page: https://elysiatools.com/en/tools/pdf-batch-compress

- **Category:** PDF Tools

- **Keywords:** pdf, compress, batch, optimize, ghostscript, qpdf, downsample, multiple

## Overview

Process multiple PDF files in one operation and compress each according to the same settings.

**Features:**
- Upload multiple PDF files at once
- Apply same compression settings to all files
- All compressed outputs packaged in a single ZIP
- Quality presets: screen, ebook, printer, prepress
- Image DPI downsampling control
- Web linearization option

**Optimization steps:**
- Downsample color/gray/mono images
- Font subsetting and duplicate image detection
- Stream recompression and object stream optimization
- Optional linearization for web delivery

**Use Cases:**
- Batch document preparation for web delivery
- Reducing storage size for document archives
- Optimizing multiple PDFs for email attachments

## Inputs

- **Source PDF Files** (file): Upload multiple PDF files
- **Compression Profile** (select)
- **Image DPI Override** (number)
- **Linearize for Web** (checkbox)

## When to use

- When you need to reduce the size of multiple PDF documents at once to meet email attachment limits.
- When preparing a batch of heavy PDF reports for fast web loading and online distribution.
- When archiving large volumes of PDF files and wanting to minimize server or local storage usage.

## How it works

- Upload up to 10 PDF files that you want to compress.
- Select a compression profile (Screen, eBook, Printer, or Prepress) and optionally set a custom image DPI override or enable web linearization.
- Click compress to run image downsampling, font subsetting, and stream optimization across all files.
- Download the resulting ZIP archive containing all of your optimized PDF files.

## Use cases

- Optimizing a batch of monthly financial reports for email distribution.
- Downsampling high-resolution image-heavy PDFs for faster loading on mobile web browsers.
- Compressing scanned document archives to save storage space on corporate servers.

## Frequently asked questions

### What compression profiles are available?

You can choose from Screen (maximum compression), eBook (balanced quality and size), Printer (high quality), and Prepress (best quality preservation).

### Can I set a specific image resolution for the compressed PDFs?

Yes, you can use the Image DPI Override option to set a custom DPI value between 0 and 600.

### What does the 'Linearize for Web' option do?

It optimizes the PDF structure so that web browsers can display the first page of the document before the entire file finishes downloading.

### How do I receive the compressed files?

All processed and compressed PDF files are packaged together and delivered as a single ZIP file download.

### Is there a limit to the number of files I can upload?

Yes, you can upload up to 10 PDF files at a time, with a maximum file size limit of 10 MB per file.

## Related tools

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- [Convert AVIF to PDF](https://elysiatools.com/en/tools/avif-to-pdf): Convert AVIF images to PDF format with customizable page size, orientation, and quality settings

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- [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10
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- [Time Zone Workflow Scheduler ICS Samples](https://elysiatools.com/en/samples/time-zone-workflow-scheduler-ics-samples): ICS files generated in the same structure returned by the Time Zone Workflow Scheduler, with multiple VEVENT meeting candidates exported from overlap windows
- [WebRTC Real-Time Communication Samples](https://elysiatools.com/en/samples/webrtc-samples): Comprehensive WebRTC samples for peer-to-peer audio/video communication, data channels, screen sharing, and signaling server implementation