HSI Converter

Extract text from Hyperspectral images and sprites (HSI)


Drop or upload your .HSI file
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How to extract text from your HSI file

  1. Click the "Select File" button above, and choose your HSI file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert HSI to another file type

To convert HSI Images to another format, you need Helbreath or other Game software.

Convert a file to HSI

To convert other file formats to the "Game Sprite Image File" file type, you need software like Helbreath or a similar tool.


About HSI files

The .HSI file extension is primarily used as a proprietary game sprite image and asset file for classic MMORPGs, most notably Helbreath and Ragnarok Online. These files store binary data containing 2D character graphics, animation frames, and texture pointers required by the game's rendering engine. Historically, the extension was also used for the Handmade Software Bitmap Image format, viewable only via the discontinued Image Alchemy software. Because .HSI files are heavily localized to specific game engines, they pose significant challenges for modern users. You cannot open them with standard image viewers like Windows Photos or macOS Preview. Editing or viewing the raw sprite data typically requires specialized, community-built modding tools or a hex editor. The proprietary compression and embedded metadata mean that without the original game client, the assets remain locked and inaccessible. To make these graphics usable outside the game environment, conversion is strictly required. Just drag and drop your file here to analyze and convert it securely right in your browser. For web publishing and preserving background transparency, convert to PNG. If the file contains animated character frames, extracting to GIF or a sprite sheet is ideal. For archiving static assets with smaller file sizes, standard JPG is recommended.

Convert.Guru analyzes your HSI file, detects the exact format, and lets you read the text inside.

Users also converted SLDPRT and RGB files.


FAQ

If you want to convert HSI file to RGB, you can use Helbreath or similar software from the "Game Sprite Image Asset" category. In the File menu, look for Save As… or Export….

To convert files to HSI, try Helbreath or another comparable tool in the "Game Sprite Image Asset" category.



The HSI Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our HSI converter.