# PDF1M: Compress & Shrink — Photos to PDF, about 1MB

> Photos to PDF, about 1MB (iPhone/iPad app by 深锐 郑.)

- Source: https://appshunter.io/ios/app/pdf1m-compress-and-shrink/id6816677504 (this page in markdown: same URL + `.md`)
- Developer: [深锐 郑](https://appshunter.io/developer/6804111993)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-09-29
- Data updated: 2026-10-12

## What is PDF1M?

PDF1M converts between photos and PDFs. It does one thing: make files small enough to send, without ruining readability.

PHOTOS TO PDF
Pick photos and get a PDF of about 1MB. For documents up to 5 pages it lands right around 1MB — small enough for email attachments, homework uploads and chat apps. Drag to reorder pages.

• Tiny: about 500KB for up to 5 pages
• Balanced: about 1MB for up to 5 pages (default)
• Sharp: about 2.7MB for up to 5 pages, clearest text

More pages means smaller pages. If the target truly can't be reached, the app tells you the real size instead of quietly crushing your content.

PDF TO IMAGES
Export every page to your photo library, ready to send anywhere.

• Scanned pages are copied straight out of the PDF — no re-compression, zero quality loss
• Up to 1MB (balanced, default) / 512KB (space saver) / 3MB (high quality) per image
• Encrypted PDFs are supported with a password prompt

SHRINK PDF
Re-compress scans and photos of documents into a much smaller file. A 147-page, 101MB scanned book comes down to 25.9MB in our tests.

• Light: ≤900KB per page
• Medium: ≤520KB per page (default)
• Extreme: ≤300KB per page

You see an estimated result before anything is written. Note: shrinking turns page text into images, so it suits scans and photos of documents, not vector PDFs such as ebooks.

WHY PDF1M
• Fully offline: everything happens on your iPhone. No server, no account, nothing uploaded
• No subscription: one-time purchase. Free tier: 3 runs a day, up to 5 pages each
• No watermark: clean output
• No ads: nothing interrupts your work
• Local history: files you create or shrink stay in Recent on your iPhone, ready to preview or share; clear them anytime, and they go away with the app

PRIVACY
The app collects no data. The only network activity is Apple processing your purchase, and everything works in Airplane Mode.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PDF1M Unlock | $2.99 | one-time |


## Is PDF1M safe?

Not enough ratings yet to assess PDF1M.

## Is PDF1M legit?

PDF1M: Compress & Shrink appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for PDF1M is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-30

No release notes.

## More apps by 深锐 郑

- [Photo1M: Lightweight Camera](https://appshunter.io/ios/app/photo1m-lightweight-camera/id6804128282)
- [Best Shot: Photo Culling](https://appshunter.io/ios/app/best-shot-photo-culling/id6819668915)

All apps by 深锐 郑: https://appshunter.io/developer/6804111993

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-12.*