---
title: Linearize PDF
description: Optimize PDF files for fast web viewing with progressive loading. Also known as "Fast Web View" optimization.
---

# Linearize PDF

Linearization restructures a PDF so the first page can be displayed before the entire file has downloaded. Adobe calls this "Fast Web View." If you host PDFs on a website or serve them through a document portal, linearization makes them feel significantly faster to open.

## How It Works

1. Upload one or more PDF files.
2. Click **Linearize PDF(s)**.
3. Download the results as a ZIP archive containing all linearized files.

There are no settings to configure. The tool uses QPDF's `--linearize` flag, which rearranges the internal structure of the PDF without altering its visual content.

## What Linearization Does

- Reorders PDF objects so the first page's data appears at the beginning of the file
- Adds a linearization dictionary and hint tables so viewers know where to find each page
- Enables byte-range requests -- a browser can fetch just the first page without downloading the whole file
- Cleans up the cross-reference table for efficient random access

## Features

- Batch processing of multiple PDFs in a single operation
- Output preserves all content, fonts, images, and interactive elements
- Uses QPDF (WebAssembly) for reliable, standards-compliant linearization
- Results are packaged into a ZIP for easy download

## Use Cases

- Hosting PDF reports on a website where users expect instant page display
- Embedding PDFs in web applications with in-browser viewers
- Publishing PDF catalogs or manuals accessed over slow mobile connections
- Preparing documents for content delivery networks (CDNs) that support byte-range serving

## Tips

- Linearize after all other edits are done. Any subsequent modification (merging, adding pages) will break the linearization.
- Combine with Compress PDF for the smallest, fastest-loading PDFs possible.
- Linearization adds a small amount of overhead to file size (typically under 1%).

## Related Tools

- [Compress PDF](./compress-pdf) -- reduce file size before linearizing
- [Repair PDF](./repair-pdf) -- fix structural issues that prevent linearization
- [Remove Metadata](./remove-metadata) -- strip metadata before publishing online