# Compress PDF for accountants

_Updated July 2026 · Arthize · https://arthize.com/for/accountants/compress-pdf_

Arthize lets accounting and bookkeeping teams compress a PDF in a private workspace — free, with no watermark. Compressing a PDF reduces file size — often 50–90% on image-heavy scans — by down-sampling images and stripping redundant data, while keeping text selectable.

## Why accountants compress a PDF

At month-end a bookkeeper converts PDF bank statements to Excel to reconcile them, merges receipts into a single expense file, and compresses the package small enough to email a client — without the data ever leaving a private workspace.

**Built for bank statements.** Whether it's bank statements, invoices, tax returns, Arthize's compress pdf keeps the work inside your private workspace. Financial records carry account numbers and personal details. Accountants need those files processed privately and deleted, not retained by a free tool.

## What matters when you compress a PDF

PDF file size almost always comes from embedded images, not text.

Down-sampling scans to a lower DPI usually gets an image-heavy file under 1MB.

Light compression is visually lossless for most documents.

## How to compress a PDF

1. **Open the compress tool** — Sign in and open the Compress tool.
2. **Add your PDF** — Upload the oversized file; it is processed privately.
3. **Pick a compression level** — Higher compression down-samples images more; light compression keeps them crisp.
4. **Download the smaller file** — Most image-heavy PDFs drop well under 1MB with no visible quality loss.

## FAQ

### How do accountants compress a PDF for free?

Compressing a PDF reduces file size — often 50–90% on image-heavy scans — by down-sampling images and stripping redundant data, while keeping text selectable. On Arthize it's free with no watermark, and the file is deleted after the job — which is why accounting and bookkeeping teams can use it for bank statements without a confidentiality risk.

### Is it private to compress a PDF sensitive bank statements?

Yes. Financial records carry account numbers and personal details. Accountants need those files processed privately and deleted, not retained by a free tool. Files are processed inside your private Arthize workspace and deleted after the job.

### How do I compress a PDF to under 1MB?

Compressing a PDF reduces file size — often 50–90% on image-heavy scans — by down-sampling images and stripping redundant data, while keeping text selectable. On Arthize it's free with no watermark and processed privately.

### Will compressing a PDF lose quality?

Compressing a PDF reduces file size — often 50–90% on image-heavy scans — by down-sampling images and stripping redundant data, while keeping text selectable. On Arthize it's free with no watermark and processed privately.