# Fast Image Viewer

> Fast image viewer for large bitonal images, supporting cloud and camera roll access. (iPhone/iPad app by TDF Software.)

- Source: https://appshunter.io/ios/app/fast-image-viewer/id963538798 (this page in markdown: same URL + `.md`)
- Developer: [TDF Software](https://appshunter.io/developer/955437525)
- Category: Utilities, Photo & Video
- Price: $2.99
- Rating: 3.50/5 from 2 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 2 MB
- Languages: English, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish, Turkish
- Released: 2015-02-20
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fast-image-viewer/id963538798/reviews.md

## What is Fast Image Viewer?

A powerful image viewer built from the ground up with highly optimized code especially adept at viewing large bitonal images (e.g. engineering drawings, well logs, etc). Unlike competing products, FIV does not require importing images to local storage and does not need to create any temporary data on your device. It can access images in your camera roll and all supported cloud storage services and open them directly with no delays. Priced fairly, fully functional and no in-app purchases.

*** Now with 3D-Touch support - Quick Actions, Peek/Pop and accelerated pressure-sensitive image panning

FIV can view the following image formats:
TIFF (TIF) - single or multiple pages, (Uncompressed, Packbits, LZW, JPEG, Huffman, G31D, G32D, G4, Flate/ZIP, Planar, CMYK, RGB, YCbCr)
BMP (Windows, OS/2, RLE)
DICOM (uncompressed, RLE, JPEG, animated)
CALS (type 1)
JEDMICS C4 (US Military images)
GIF (+Animated)
FLI/FLC (Animated)
PNG (+Animated)
PGM/PBM/PPM
JPEG (baseline, progressive, extended, lossless, YCbCr, RGB, CMYK, YCCK)
JPEG2000 (jp2/j2k/dicom/pdf)
PCX,DCX (multipage PCX)
Targa (uncompressed, RLE)
QuickLinks FAX
Microsoft FAX (*.AWD)
WinFAX
BitFAX
FITS (astronomy images)
PDF - NOTE: PDF support is limited to scanned images such as FAXes, NOT text or vector graphics. This is useful if you know your PDF file contains scanned images because FIV can view and navigate it much quicker than other PDF viewers.

FIV is great at viewing large black & white scanned images. Unique technology allows for incredibly fast decoding and readable scale-to-gray (anti-aliased) views. Navigate between pages/files in milliseconds even on less powerful phones.
FIV is capable of viewing well logs faster than any other software available. As an oil/gas/water well log viewer, FIV can open scans up to 600 x 600 inches (@400dpi).

If a supported image doesn't load correctly or a feature doesn't work as expected, please contact us for tech support (tdfsoftware@gmail.com).

Please check our Twitter feed for the latest news:
@TDF_Software

FIV has no external dependencies. The imaging code is completely self contained and written in portable C and optimized assembly language. Please send any licensing requests to tdfsoftware@gmail.com.

## Key features

- Optimized for large bitonal images
- Direct cloud and camera roll access
- No import or temporary data creation
- Supports numerous image formats (TIFF, BMP, DICOM, GIF, JPEG, etc.)
- Fast page/file navigation
- 3D-Touch support

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/fast-image-viewer/id963538798/reviews.md

### 5/5 — great, but buggy

*2022-04-09*

works great, with no anti aliasing.

the only problem is that it crashes when zooming in and out when viewing a very large images. i hope that they fix it

### 2/5 — Not a great choice for cloud albums

*2018-10-30*

When viewing images on Dropbox, you can’t quickly flip through images. You have to tap each to download it to your device, and tap again to view. I had expected to be able to quickly swipe through and have it pre-fetch and cache successive photos like with other viewers.

### 5/5 — Hap EsqCBo

*2016-05-24*

Great App!
Accomplished my task exactly as I needed in less than a minute!
Highly recommend!

### 1/5 — Crashes, won't display

*2016-02-22*

Just purchased the app for iPad. I had 3 DICOM files on my google drive. It failed to display all of them. It also continually crashes. I want my $ back please.

**Developer response:** I would be happy to resolve the issue if you give me a chance. You didn't try to contact me and just left a 1 star review, so there's not much I can do to help you.

### 5/5 — Great Viewer

*2015-11-08*

Simple, clean, straightforward, no bugs, no crashes. Supports just about any image type. Shows image info you'd want to know.  Really nice knowing the image type and dimensions; can't get that from iOS Photos preview. Great tech support with the developer.

### 5/5 — Nice

*2015-09-26*

It's able to open every image I try; thanks for supporting lots of legacy formats

### 5/5 — Terrific!

*2015-09-25*

Allows me to view my cloud storage files without taking up space on my phone!

### 5/5 — Fast with lots of zoom

*2015-02-26*

Great image utility! 800%+ zoom without breaking a sweat. Opens any image I can throw at it!

## Frequently asked questions about Fast Image Viewer

### What image formats does Fast Image Viewer support?

Fast Image Viewer supports a wide array of formats including TIFF, BMP, DICOM, GIF, PNG, JPEG, JPEG2000, and more. It is particularly adept at handling multi-page TIFF files and various compressed formats.

### Does Fast Image Viewer require importing images?

No, Fast Image Viewer does not require importing images to local storage or creating temporary data. It can open images directly from your camera roll and supported cloud storage services.

### How fast is Fast Image Viewer for large images?

The app is built with highly optimized code for incredibly fast decoding and navigation. It can navigate between pages or files in milliseconds, even on less powerful devices.

### What is the price of Fast Image Viewer?

Fast Image Viewer is priced at $2.99. The app is fully functional with no in-app purchases required.

### Is Fast Image Viewer available on all Apple devices?

Yes, Fast Image Viewer is supported on iPhone, iPad, and iPod. It also features 3D-Touch support for quick actions, peek, and pop.

### What is the age rating for Fast Image Viewer?

Fast Image Viewer has an age rating of 4+. This indicates it is suitable for a wide audience, including children.

### How often is Fast Image Viewer updated?

The latest version, 2.0.2, was released on April 17, 2017. While updates have not been frequent recently, the app is self-contained and stable.

### Does Fast Image Viewer have ads?

No, Fast Image Viewer is ad-free. It is a paid application with no advertisements to interrupt your viewing experience.

## Version history (last 5 releases)

### 2.0.2 — 2017-04-17

This app has been updated by Apple to display the Apple Watch app icon.

Updated for iOS 10
Fixed camera roll permission
Fixed saving as PDF crash
Fixed "open/import" sharing from other apps (registered document types)

### 2.0.1 — 2016-05-16

Added DICOM window/level controls (contrast/brightness). Click the gear icon on the toolbar to show/hide the controls
Added preliminary support for viewing TIFF JBIG (T.85) images. More JBIG support to come in the near future
Improved the Russian translation
Fixed the help for several languages
Fixed a few crash bugs occurring in the bookmark list

### 2.0.0 — 2016-01-28

Complete rewrite of the workflow. The main view is now a list of recently viewed images and those from cloud sources can now be cached for use offline.
Added support for 3D-touch - quick actions to open the last 4 documents, peek/pop in the recently viewed list, and a unique pressure-sensitive panning control
Email attachments (or other images sent to FIV) now show up in the recent document list, so they're easier to access later
Changed the color scheme to black text on a white background to be more like standard iOS apps
Now supports 10 languages - EN, ES, PT, IT, ZN, TR, RU, KO, JA, DE
Main view now has adjustable sized rows (small, med, large, x-large) and much more detailed information about each file
You can now share the 'info' screen as a formatted image
Added toolbar buttons to the help screen to send email feedback and leave an App Store review
Enabled rotating the view of all of the screens (previously limited to portrait orientation)
Added preliminary support for decoding JPEG2000 images (8-bit grayscale and color) jp2/j2k/dicom
Fixed a problem with DICOM 16-bit grayscale images (wrong pitch)

### 1.2.0 — 2015-11-30

Added page navigation buttons to the main viewer window
Added support for opening larger images (up to 256000 x 256000 pixels). If it fits in memory, FIV can open it. For bitonal (1-bpp) files, FIV can open huge files even on devices with < 1GB RAM
Added a "save as" feature - now you can save the current page in a number of formats (PDF, TIFF, PNG, GIF, JPEG, BMP) with compression options

### 1.1.2 — 2015-09-27

Updated for iOS 9 (including split view)
Added support for CMYK and YCCK JPEG images
General fixes to the imaging code

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## More apps by TDF Software

- [Fast Image Viewer Free](https://appshunter.io/ios/app/fast-image-viewer-free/id983371537)
- [Blurry Photo Finder](https://appshunter.io/ios/app/blurry-photo-finder/id1078742500)

All apps by TDF Software: https://appshunter.io/developer/955437525

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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 2026-06-10.*