Extract text from SJS files
To convert your SJS file to another format, you need SpreadJS or other Spreadsheet software.
To convert other file formats to the "Web Spreadsheet" file type, you need software like SpreadJS or a similar tool.
The .sjs extension primarily represents a SpreadJS Spreadsheet file, a format developed by MESCIUS (formerly GrapeCity) for their JavaScript spreadsheet components. Unlike standard XLSX files, an .sjs file is actually a ZIP archive containing multiple optimized JSON files that define cell data, formulas, and formatting for web-based applications. While efficient for web performance, these files are proprietary and cannot be opened directly by desktop software like Microsoft Excel or LibreOffice without conversion.
In a development context, .sjs often stands for Sealed JavaScript or Safe JavaScript, used by platforms like Alipay Mini Programs or MarkLogic Server. These are plain text scripts designed to run securely on a server or within a sandboxed environment. A niche third use case involves script dumps from the retro game Snatcher.
For most users encountering this file outside of a coding environment, the goal is to view the spreadsheet data. Converting .sjs to XLSX (Excel) is the standard workflow for editing, while PDF is best for archiving reports.
Convert.Guru analyzes your SJS file, detects the exact format, and lets you read the text inside.
Users also converted EZ, SXC and OPK files.
If you want to convert SJS file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use SpreadJS or similar software from the "Spreadsheet Data Storage" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to SJS, try SpreadJS or another comparable tool in the "Spreadsheet Data Storage" category.
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 SJS converter.