The only thing it can definitely not (but was optional): displays the filename somewhere: yes, in the tab.provide some statistics on the JSON content: some.works off-line: it's a Windows desktop application.It has a feature to expand to a given level can collapse/expand a given level: it is a full tree view and can expand/collapse any nodes.has a decently responsive UI: I use a commercial tree view from DevExpress which I hope is optimized very well.

open decently large files: it can open the 1.44 GB example file without crashing in ~ 2:45 minutes on my machine (Intel Core i7, 16 GB RAM, SSD).EmEditor opened my file just fine but when I tried to do Find and Replace, it froze my laptop for 40 minutes and I had to kill the process.I have written Huge JSON viewer based on JSON.NET, one of the fastest JSON frameworks. I have also tried a trial version of EmEditor, authors of which claim that it can work with very large 200Gb+ files. It took FART 21 minutes - still not bad!Ĭertainly a great little tool to add to your toolbox!

Then I processed another big file - 21Gb this time. Well, it did the same thing in just 3 minutes! Quite a difference! All I had to do is to download it and use this command which would replace all the occurrences of aaa with bbb: fart.exe -c input.csv 'aaa' 'bbb' Now leaving name of the tool aside, I was a bit skeptical about it but gave it a try. Then I stumbled upon a free little command tool called FART - Find And Replace Text. NET Streamreader library to read lines one by one but I think a lot of people agreed that ReadCount works better since it is doing reads/writes in batches. Rob mentioned that using a filter and reading a file in batches (using ReadCount) would provide very good performance. It took 19 minutes on my laptop to run which was not too bad. Get-Content -ReadCount 1000 $filepath | num2x | add-content $newfilepath I stumbled upon a comment made by Rob Campbell here and quickly created this script in PowerShell ISE (love it!): $filepath = 'input.csv' This is a pretty easy task if you are on Linux (using tool like sed) but it is not that easy if you are on Windows.įirst, I tried my favorite PowerShell. I needed to replace a specific text string in a 6.5Gb file for one of my projects.

Text editor for large files windows 10