# PDF Masker - Secure Redaction — Bulk Redact and Blackout PDFs

> Securely redact sensitive keywords from PDF documents for safe sharing. (iPhone/iPad app by Kazuhisa Kobayashi.)

- Source: https://appshunter.io/ios/app/pdf-masker-secure-redaction/id6748043661 (this page in markdown: same URL + `.md`)
- Developer: [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 2.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 14 MB
- Languages: American English, Japanese
- Released: 2025-07-09
- Data updated: 2026-08-18
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/pdf-masker-secure-redaction/id6748043661/reviews.md

## What is PDF Masker?

Protect your sensitive information before sharing files with others. 
PDF Masker is a powerful security tool that lets you search and black out specific keywords across your PDF documents automatically.

Import any PDF directly from your device using the Share menu. Enter your target keywords, and the app instantly hides matching text so you can send your documents safely.

You can choose to export your final file as a searchable text-based PDF or as an image-based PDF. The image-based option is perfect when you want to permanently erase underlying text data so it can never be copied or recovered.

Key Features
- Smart Bulk Redaction: Enter a keyword and automatically mask every single match across the entire document.
- Multiple Keywords Support: Separate multiple terms using spaces or commas to clear different pieces of data at once.
- 100 Item History Tracker: Saves up to 100 of your frequently used keywords so you can reapply them with a single tap.
- Custom Redaction Colors: Change the color of your redaction blocks from classic blackout to white or any custom tone.
- Flexible File Loading: Easily load files from your system file picker, in-app web browser, or straight from other apps via the Share extension.
- 100 Percent Offline Security: All processing happens locally on your phone or tablet. Your private and confidential documents are never sent to external servers.
- Clean and Fast User Interface: Designed to be clean, fast, and simple for everyone, with no complex setup required.

Whether you are hiding account numbers, blurred names, personal addresses, or sensitive corporate contracts, PDF Masker helps you prevent data leaks on the go.

## Key features

- Import PDFs via Share menu
- Bulk keyword redaction
- Export as text or image PDF
- Multiple keyword support
- Customizable redaction color
- Save keyword histories

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/pdf-masker-secure-redaction/id6748043661/reviews.md

### 2/5 — Good not great.

*2026-04-27*

I need bulk redaction, or at least a 1-tap save mechanism. Having to use the Share button to save one doc at a time is super painful.

**Developer response:** Thank you for sharing your feedback. We are sorry for the frustration caused by the current saving process.

We hear you loud and clear—having to use the Share button for each document is painful. Your ideas for bulk redaction and a 1-tap save mechanism are fantastic, and we recognize how much they would enhance the user experience.

We have added this to our feature request list for future development considerations. Thank you for helping us improve the app!

## Frequently asked questions about PDF Masker

### How do I import PDFs into PDF Masker?

You can import PDFs into PDF Masker directly from the Share menu on your device. Alternatively, you can load PDFs via your device's web browser or file picker for quick access.

### Can PDF Masker redact multiple keywords at once?

Yes, PDF Masker allows you to specify multiple keywords separated by spaces or commas for bulk redaction. This feature helps you quickly mask all sensitive information in your document.

### What export options are available in PDF Masker?

PDF Masker offers two export options: text-based PDF, which preserves the text layer, and image-based PDF, which converts the document into an image to completely remove text data.

### Does PDF Masker have ads?

Yes, PDF Masker contains advertisements. As a free application, it utilizes ads to support its development and maintenance.

### How often is PDF Masker updated?

The latest version of PDF Masker is 1.3.2, and it was last updated on June 28, 2026. Updates typically include bug fixes and feature enhancements to improve user experience.

### What devices is PDF Masker compatible with?

PDF Masker is designed for Apple devices and is compatible with iPhone, iPad, and iPod. It requires iOS 4+.

### Is PDF Masker suitable for non-technical users?

Yes, PDF Masker features a simple and fast UI specifically designed for non-technical users. Its straightforward interface makes it easy to redact sensitive information without requiring advanced technical skills.

### What is the user rating for PDF Masker?

PDF Masker currently has a rating of 2.0 stars based on 1 rating. This indicates a mixed user reception, and users may wish to consult recent reviews for more detailed feedback.

## Version history (last 5 releases)

### 1.3.4 — 2026-08-10

Reorganized the layout of the settings screen.

### 1.3.3 — 2026-07-08

Bug fixes and performance improvements.

### 1.3.2 — 2026-06-28

Performance improvements and bug fixes for a more stable experience.

### 1.3.1 — 2026-05-28

Added an in-app purchase option to remove advertisements.

### 1.2.3 — 2026-04-15

Bug fixes and performance improvements.

## Apps similar to PDF Masker

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| --- | --- | --- | --- |
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| [Screenshot Editor: ScriblyShot](https://appshunter.io/ios/app/screenshot-editor-scriblyshot/id6748587742) | — | Free | Productivity |
| [Blackout:Blur Redact Hide Info](https://appshunter.io/ios/app/blackoutblur-redact-hide-info/id6753342700) | — | Free | Productivity |
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| [Auto Blur Face: Redact Privacy](https://appshunter.io/ios/app/auto-blur-face-redact-privacy/id6736954211) | 4.0 (2) | Free | Productivity |

## More apps by Kazuhisa Kobayashi

- [Easy Print Address](https://appshunter.io/ios/app/easy-print-address/id1580881998)
- [Housie Bingo Card Maker](https://appshunter.io/ios/app/housie-bingo-card-maker/id1597237424)
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- [CSV Master](https://appshunter.io/ios/app/csv-master/id1633580928)
- [Kitchen Timer Clock](https://appshunter.io/ios/app/kitchen-timer-clock/id1645240832)
- [Show IDFA](https://appshunter.io/ios/app/show-idfa/id1658957983)

All apps by Kazuhisa Kobayashi: https://appshunter.io/developer/1580882000

## Related topics

[redaction](https://appshunter.io/ios/topics/redaction) · [redact pdf](https://appshunter.io/ios/topics/redact-pdf)

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*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 2026-08-18.*