Large Text File Viewer v5.2u

billon on 12 Sep 2017
  • 690KB (uncompressed)
  • Released on 5 Jun 2009
  • Suggested by dasfx

Large Text File Viewer is designed for viewing large text files. It uses little memory and is able to open very large files (> 1GB) instantly. Background file indexing makes browsing even faster. It also allows the user to perform high-speed complex text search by means of plain text or regular expression.

Note: main site offline - linking to

System Requirements: WinNT / Win2K / WinXP / Vista / Win7 / Win8 / Win10
Writes settings to: Application folder
Stealth: ? Yes
Unicode support: Partial. The program supports UTF-16 Little-endian (UCS-2 LE) but not Unicode Big-endian and UTF-8.
License: Freeware
How to extract: Download the ZIP package and extract to a folder of your choice. Launch LTFViewr5u.exe.

Optionally, delete the included JPG files, which form a tiled window background.
What's new? Fixed:
  • The program hangs while reading files with large average line length.
  • Other bugs.

20 comments on Large Text File Viewer  The Portable Freeware Collection Latest Entries Feed

joby_toss 2007-12-04 15:04

I really was amazed!
100mb text file opened instantly! I never belived that was possible. It's unreal.

James P. Wack 2008-01-10 17:23

800MB of text opened in less time than downloaded :')

brad 2008-04-19 11:17

exe says "not a valid PocketPC application when run - is there an alternate download? thanks

Dav 2008-05-07 01:06

System Requirements: WinNT / Win2K / WinXP
Where does that say PocketPC? lol

enoch 2008-05-20 21:53 opens a 12 GB text file mannnnnnnn.....thats alot!!!!!!!!!!!!!!!

poo 2008-07-17 11:20

It doesn't open a 115 gig file. Piece of junk.

looby doo 2008-07-28 06:23

Fantastic program!! Opened a 700 Mbyte in the blink of an eye. Can do searched on it too!

Thank you Swift Gear!

forget it 2010-05-14 12:24

It choked on a 6 gig file

Peter 2010-05-16 09:19

I have about 500 MB SQL file (it's in UTF-8 encoding), and the program simply can not open it. It just hangs.
But "Universal Viewer" - the other program listed in "Text - Viewers" category works just fine. So I can reccomend using "Universal Viewer".

simple user 2010-06-23 09:39

good! here are some hints to improve the application: when the user tries to do a search and the file is not fully loaded yet, warn about that instead of going back to the first match of the text to search; don't close the application when the user (possibly by mistake) presses the ESC key; remove some skulls from the background ;-)

trk 2011-02-03 07:10

It's Goood!
I'm Japanes, so I had selected japanes font , and viewed file with encoded by shift_jis.
It's great!.
So I have 2 hopes, 1st is scroll by keyStroke like vi/less. and 2nd is UTF-8.

Gihan 2011-02-13 15:34

Cannot open 300kb file. Suck. Not responding

freakazoid 2011-02-14 01:51

@Gihan - Try AkelPad

Comma Chameleon 2011-02-14 10:23

Very Good, fast and unique.
235MB file OK in 8 seconds. (XP Sp3)
That's 1.8 million lines with 20 CSV fields on each.
The brilliant way it shows the field name in CSV (Comma Separated Value) files
when you hover over the data is very indispensable for large file work.

Impressed! 2011-03-30 06:57

Thank you! Thank you! Thank you!
Opened 800MB+ log files was never so quick and easy!


abc 2011-08-11 17:24

Fast indeed, almost fits my needs except...

* Opening a non-ascii file such as an NOTEPAD.EXE - A bug resets the colors back to the default settings.
* Non-ascii characters are are displayed incorrectly
* Large files gives us a tiny ass and inaccurate scrollbar
* Very very slow scrolling for keyboard users [up/down], no home/end keys
* No hotkey configuration

Despite that it's WAAAAY better than trying to view large files with notepad/notepad++.


Emka 2014-12-06 17:11

links broken


webfork 2014-12-07 06:13

emka: updated, thanks


shuunen 2015-02-10 13:18

worked great on a 10 millions lines file, 185 Mb :) instantly


smaragdus 2016-11-03 22:44

It's a pity it doesn't support "Full Screen View".


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