Using JSZip, is there a way to edit a file within a zipped file?

I've tried looking for solutions and going through the API but I can't seem to find a solution.

Any help with this would be great! Thanks in advance!

Using JSZip, is there a way to edit a file within a zipped file?

I've tried looking for solutions and going through the API but I can't seem to find a solution.

Any help with this would be great! Thanks in advance!

• javascript
• node.js
• jszip

Share Improve this question Follow asked Nov 23, 2016 at 20:53 Dowling1dowDowling1dow 5711 silver badge66 bronze badges

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2 Answers 2

Sorted by: Reset to default 7

You can edit a file inside your zip with .file method.

zip.file("existing_filename", "new file content");

This method is used for adding and updating file content.

Just make sure the file already exist.

You can read more about it in the documentation.

You can refer to the official documentation.

And here's a more plete Node.js example:

var fs = require("fs");
var JSZip = require("jszip");

async function zipDemo() {
    // read the existing zip file
    var zipData = fs.readFileSync("input.zip");
    var zip = await JSZip.loadAsync(zipData);
    // add a new JSON file to the zip
    zip.file("sample.json", JSON.stringify({demo:123}));
    // write out the updated zip
    zip.generateNodeStream({type:'nodebuffer', streamFiles:true})
    .pipe(fs.createWriteStream('output.zip'))
    .on('finish', function () {
        console.log("output`enter code here`.zip written.");
    });
}

zipDemo();