# Compress PDF

> Reduce PDF file size locally with low, balanced, high, and custom image quality and DPI controls.

Canonical: https://helpers.aibrush.co/en/compress-pdf

## Options

Low, balanced, high, and custom compression levels.

Custom image quality and image DPI controls.

Smart comparison between structure-preserving and page-image compression.

Optional metadata removal and form-field flattening.

## How to compress a PDF

1. **Upload PDF** — Upload one PDF and unlock it locally if a password is required.
2. **Choose level** — Choose low, balanced, high, or custom compression settings.
3. **Optional cleanup** — Optionally remove metadata or flatten form fields.
4. **Download** — Download the compressed PDF and review the before and after size.

## FAQ

### Are my PDFs uploaded?

No. Inspection, compression, preview, and export run in your browser.

### Why did my PDF not get much smaller?

Some PDFs are already optimized or mostly text and vector graphics. The result panel warns when compression has little effect.

### Will text stay selectable?

Structure-preserving output keeps selectable text when possible. Page-image compression can make a smaller file for image-heavy PDFs, but it visually flattens pages.