Extract text from ECMAScript modules (MJS)
To convert MJS modules to another format, you need Node.js or other Developer software.
To convert other file formats to the "Source Code File" file type, you need software like Node.js or a similar tool.
The .MJS file format represents an ECMAScript Module, primarily used by Node.js and modern JavaScript bundlers like Webpack. By using the .MJS extension, developers explicitly tell the runtime environment to parse the code as an ES module using modern import and export statements rather than the legacy CommonJS require() syntax. For deep technical background on the language specifications, consult the ECMAScript Wikipedia page.
Despite being standard JavaScript, .MJS files often cause severe compatibility and deployment issues in legacy environments. Older web servers (like unpatched Apache or Nginx) might serve them with the wrong MIME type, causing browsers to block execution entirely. In backend environments, mixing .MJS modules with older JS files frequently triggers the frustrating SyntaxError: Cannot use import statement outside a module error. Furthermore, .MJS files enforce strict mode by default, which can immediately break older, loosely written scripts.
To resolve runtime errors, ensure server compatibility, or share code safely, you often need to convert these files. For legacy Node.js support, convert to .CJS (CommonJS). For broad web deployment, convert to standard JS. If you require strict type checking, convert to TS (TypeScript). For archiving or sharing via email without triggering aggressive antivirus filters, convert to plain TXT.
Convert.Guru analyzes your MJS file, detects the exact format, and lets you read the text inside.
Users also converted JS, MUS, JPG, HTML, ZIP, TXT, VTT, PNG, AAE, ACTION, RAR, INDD and BIN files.
If you want to convert MJS file to JS, TS, JPG, JSON, HTML, HTM, CSS, PHP, ASP, ASPX, JSP or JSPX, you can use Node.js or similar software from the "JavaScript Module Execution" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to MJS, try Node.js or another comparable tool in the "JavaScript Module Execution" 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 MJS converter.