# Kantu - Image viewer — Support WebP,GIF,FLIF,AVIF,AV1

> External image viewer supporting numerous formats, including WebP, AVIF, and GIF. (iPhone/iPad app by 俊锋 仝.)

- Source: https://appshunter.io/ios/app/kantu-image-viewer/id1458706066 (this page in markdown: same URL + `.md`)
- Developer: [俊锋 仝](https://appshunter.io/developer/1209824000)
- Category: Utilities, Productivity
- Price: $1.99
- Rating: 1.50/5 from 2 App Store ratings · 13 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 17 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2019-04-15
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/kantu-image-viewer/id1458706066/reviews.md

## What is Kantu?

Kantu is a image browsing tool that provides external image browsing support for images in other apps, such as email attachments.

If you are unable to open the view for the image format that is not natively supported for iOS, you can use this tool to achieve your purpose.

Features:

* Support system native file system.
* Support other apps Open image files in Kantu.
* Support image file thumbnails.
* Support for Quick Look.

Supported image formats:

* JPG
* JPEG-2000
* TIFF
* BMP
* ICO 
* ICNS
* GIF
* PNG (APNG)
* WebP
* FLIF
* AVIF
* HEIC
* SVG
* BPG

    If you have any questions, or suggestions, you can use the feedback provided in the app to tell us.

## Key features

- External image browsing
- Support for unsupported formats
- System native file system integration
- Open image files from other apps
- Image file thumbnails
- Quick Look support

## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/kantu-image-viewer/id1458706066/reviews.md

### 1/5 — 完完全全的半成品，对不起这个定价

*2026-03-06*

作为一个app不支持任何批量相关操作，不能滑动切换，不能创建文件夹分类，不能排序，唯一优点就是支持的格式多😅

**Developer response:** 你好, 我们希望了解一些关于您使用过程中遇到的问题, 进一步对 app 进行优化. 能否与您取得联系呢? 我们的邮箱是 ZHK1024@foxmail.com

### 3/5 — 缺点

*2023-02-11*

没有排序功能

### 1/5 — not good for cbz with enclosed avif

*2023-01-21*

I’ve bought this app only to try to see avif files in cbz comics. I’ve sent a message to tell them it wasn’t possible and they didn’t even care to send any kind of answer. I’d get a refund if it were possible :(

### 4/5 — 反馈

*2022-07-28*

希望能增加滑动查看和排序功能以及文件分类方便整理

### 2/5 — has antialias

*2022-07-20*

works with APNG but has an antialiasing effect that makes it useless for pixel art. would leave a 5-star review if antialiasing could be turned off

### 1/5 — Does not work

*2021-08-16*

Wanted to open a jpeg file from dash am. Does not work

### 3/5 — iPad不能横屏使用

*2021-03-23*

iPad不能横屏使用

### 1/5 — Avif support is incomplete

*2021-03-18*

Installed this app for viewing avif file on iOS, obviously it does not HDR feature of avif. Then what’s the point of avif support?

### 1/5 — Too much clicking around

*2020-08-06*

To view an image you have to click it.  Then to get to the next image you have to click browse and find it again.  Lots of clicking around.

### 4/5 — Telegram社交软件里的tgs动画

*2020-02-06*

希望能支持，

## Frequently asked questions about Kantu

### What image formats does Kantu support?

Kantu supports a comprehensive list of image formats including JPG, PNG, GIF, WebP, AVIF, HEIC, SVG, and many more, ensuring you can view almost any image file.

### Can Kantu open images from other apps?

Yes, Kantu is designed to open image files directly from other applications, such as email attachments or files downloaded from the web.

### Does Kantu have ads?

No, Kantu does not contain advertisements, providing an uninterrupted viewing experience.

### What devices is Kantu available on?

Kantu is available for iPhone and iPod devices.

### How much does Kantu cost?

Kantu is a paid application, priced at $1.99.

### What is the age rating for Kantu?

Kantu has an age rating of 4+, making it suitable for a wide range of users.

### How often is Kantu updated?

The latest version of Kantu is 1.5.0, and it was last updated on April 22, 2025, indicating active development.

### Why does Kantu have a low rating?

Kantu currently has a rating of 1.5 stars from 2 ratings. User feedback is encouraged through the in-app feedback option to help improve the application.

## Version history (last 5 releases)

### 1.6.0 — 2026-05-05

Full compatibility support for iOS26

### 1.5.0 — 2025-04-22

Fix Bugs.

### 1.4.1 — 2019-08-06

Fix bug in SVG image decoding error.

### 1.4 — 2019-05-23

Support Quick Look for the image.
Support image file thumbnails.
Fix BUG.

### 1.3.1 — 2019-05-13

Support Thumbnail animation (Default is off, can be turned on in the settings).
Fixed a bug where the FLIF image was slowed down after decoding.
Fix some formatting images to show bugs with content errors.
Fixed a bug that failed to import image files in other App directories.
Fix some UI bugs.

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All apps by 俊锋 仝: https://appshunter.io/developer/1209824000

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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 2026-08-20.*