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I need to download 4 png files to my angular web app and each of them < 2 MB.

I originally wanted to do the static file mapping but I keep having CORS issue so I created the work around in my flask:

@app.route("/PBR/<path:file>") def pbrFolder(file): return send_from_directory("/home/path/pbr/", file, mimetype="image/png")

But now the problem is that the files are taking forever to be downloaded, sometimes taking more than 20 secs.

Is there a way that I can download the files in faster speed?

https://i.ibb.co/R4mW47f/Screenshot-2023-09-15-at-9-09-29-PM.png

If you serve the files through your web app like that, they are going to be significantly slower than if you use the static files system. Your best bet is probably to work through the CORS issues.