SSI Converter

Our fast and easy SSI file converter will help you avoid spending countless hours trying to figure out how to convert multiple .ssi files at once.

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reaConverter
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SSI Files
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How to Convert .ssi Files in Bulk

1. Install reaConverter

Download reliable SSI conversion software to convert multiple .ssi files and folders in one go.
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Install reaConverter

2. Select SSI Files

Select SSIs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load SSI files

3. Start Conversion

Click Convert to start the bulk conversion of all selected SSI files. The process will begin right away.
reaConverter - Start SSI conversion

Convert SSI on your PC

For quick and effortless SSI file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your files

Converting SSI files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on August 27, 2025
"I was drowning in mismatched file formats until I found reaConverter. The one-click conversion and editing tools simplified everything, and the pricing is reasonable for small businesses. Now I spend less time troubleshooting and more time growing my brand!"
Emily K.
Emily K.
E-commerce Entrepreneur
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User
"reaConverter's automation tools have completely changed how I manage my projects. I often work with large batches of illustrations and used to spend hours converting and organizing them. Now, with Watch Folders, I just set the rules once and everything is handled automatically, exactly how I need it. This is pro-level automation made simple."
Chloe M.
Chloe M.
Freelance Illustrator
"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Kevin Harris
Happy User
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
Happy User

SSI files: Frequently Asked Questions

What are SSI files?

SSI is an old image format associated with SriSun, a currently obsolete graphics program. In case you found or were sent such a file, it was probably created a long time ago and difficult to open using regular image viewers.

Can reaConverter open SSI files?

reaConverter fully supports the SSI file format – open, edit, and export SSI files to any other popular file format with ease.

How do I change SSI to another format?

reaConverter is a user-friendly tool for converting SSI files. Once installed on your computer, it allows you to convert all your .ssi files at once with just a few clicks. You can even convert ssi images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert SSI online?

If you only want to convert a few SSI files, you are welcome to try our free online SSI converter.

How can I turn SSI files on my computer to another format?

The best way to convert SSI files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from SSI.

How can I automate SSI files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert SSI files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line ssi converter.

What else can I do with reaConverter?

Change format settingsChange DPISet manual file dateConvert CAD formatsSet bit depth

What formats can I convert a SSI file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

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Explore our efficient SSI file converter that saves you time and effort by converting multiple .ssi files into different formats.
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