If you need to open large files, you need to use a different program. Only systems that come equipped with 16GB of RAM and more can properly run that task but the OS may often deny it, as explained above. Opening a 2GB file in Notepad++ requires 8GB of memory. When your operating system receives the memory allocation request from Notepad++, it may deny it in order to preserve system resources. In order to provide rich text viewing, alongside code folding, syntax highlighting, and more, Notepad++ requires four times more memory than the file size.įor example, if you want to open a 300MB file, the program will use around 1,200MB of memory. This limitation is due to Scintilla – the main engine behind Notepad++. The tool will simply display an error message informing you the file is too large to be opened. Notepad++ cannot open files that are larger than 2GB. Hopefully this will be of benefit to someone.What is The Max FileSize Notepad ++ Can Open? The type of text file may be relevant as well in regards to how auto-complete processes it.
It can be replicated by simply opening a large text file (mine are 20 - 75 mb or so) and trying to type into an available row. I admittedly do not have the latest version of notepad++ so this may have been fixed in later releases.
I was able to solve the problem by disabling auto complete! (I guess every letter or word was being referenced against an autocomplete that was just killing the processing) Settings -> Preferences -> Auto-Completion : Uncheck “Enable auto-completion on each input” and possibly “Function parameters hint on input” for good measure (I did). I experienced no slowness opening, or saving the file. What looked to be many outlines of small boxes were visible during the delay, which was the tip off. Basically what was happening to me was that when I had large files open (20MB +) and tried typing in them it was taking forever to actually print the text to the screen.
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