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TOIU CORP PRESENTS

Fast, even faster
Light, even lighter

IUVIEW lets you view images quickly while keeping memory usage to a minimum.

LIVE VIEW
IUVIEW symbol

FOCUS

Clarity in every moment

01 — 03

A new way of seeing
changes how deeply we experience.

We believe technology should give your attention back, not take it away. Keep what matters close and distractions far away.

Simply fast.
That is our goal.

Stop wasting time viewing images. Wasted memory and disk space are a waste, too.

01

Smooth browsing

The fastest performance, using only the resources you need.

03

Affordable, reasonable pricing

Much more affordable than competing apps.

Less waiting.
More time for the view.

IUVIEW is thoughtfully engineered—from decoding and cache policy to native interfaces—to deliver a fast, lightweight image viewer.

01

Fast & Light

Each image is decoded across multiple threads. When a thumbnail or preview is available, it appears first and is replaced as soon as full decoding finishes. Even rapid browsing feels smooth and responsive.

The core logic is built in C++. Your image appears the moment you double-click the file, while the image list is prepared concurrently in the background.

C++ CoreMulti-thread DecodeInstant Preview
02

No Cache

IUVIEW uses neither RAM Cache nor Disk Cache. Pre-decoding nearby images could improve navigation speed, but it would also increase unnecessary memory usage.

Instead of creating a separate disk cache, IUVIEW uses thumbnails already generated by the operating system—keeping storage and memory light while browsing stays fast.

0 RAM Cache0 Disk CacheSystem Thumbnail
03

Broad format support

Open everything from common images and next-generation formats to professional RAW files without converting them first.

80 FILE FORMATS

supported-formats

80

Common images

apngbmpcurdibgificnsicojfifjifjpejpegjpgpngsvgsvgztgatiftiffwebp

Next-generation

avciavifavifsbpghdpheicheicsheifheifshifjxljxrqoiwdp

JPEG 2000

j2cj2kjp2jpcjpfjpx

Netpbm

pampbmpgmpnmppm

Professional

clipepsexrhdrpsbpsd

RAW

3frarwbaycr2cr3crwdc2dcrdngerffffiiqk25kc2kdcmefmosmrwnefnrworfpefptxrafrw2rwlsr2srfsrwx3f
04

Cross-platform

IUVIEW runs on macOS, Windows, and Linux. For a clean, fast UI and UX, it uses native GUI libraries including Cocoa, Win32 API, and GTK4 on each platform.

macOSCocoa
WindowsWin32 API
LinuxGTK4
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