Browser crashes (CPU 100%) with big files

[TiCeline]

Hi,

reader.onload = function (evt) {
		try {
			const buffer = evt.target.result;
			const msgReader = new MSGReader(buffer);
			const fileData = msgReader.getFileData(); // <--- HERE

Firefox and Chrome crashes/hangs (100% CPU) when it comes to parsing large files and it does not seem to recover.
Maybe endless loop?

I think the point where it happens is between 9 and 10 MB.

Is there a workaround?

[DevMaddin]

Good morning.

I use the same 3 rows but with var instead of const. I tried it with an Outlook Mail with an attachment over 10MB (14 MB) and had no problems.

Can you tell us more information:

• Which Mail-Program you use?
• How many attachments?
• Is there a difference when you use one big attachment or many small attachments?
• Does it work in Edge?

[weezle1]

Hello, I was having the same issue. I was able to fix it by removing an image in the sender's signature.

fileReader[rand] = new FileReader();
fileReader[rand].onload = function (evt) {

  let buffer = evt.target.result;
  let msgReader = new MSGReader(buffer);
  let fileData = msgReader.getFileData();

Which Mail-Program you use? Outlook Mail
How many attachments? 26
Is there a difference when you use one big attachment or many small attachments? No
Does it work in Edge? No

The size of the msg file is 22.071 MB.