Built for files ordinary editors cannot handle

See the whole file.
Without loading it all.

TitanFile Viewer opens, searches, and filters massive text, JSON, CSV, and log files with bounded memory usage. Your source stays read-only and untouched.

Start with aFree Trial Lifetime useOne-Time License · $5
Version 1.0.0 Read-only viewer One complete edition
TitanFile Viewer running on Windows and Ubuntu
20 GB+Designed for truly large files
BoundedMemory use stays controlled
TXT · JSON · CSVPlus logs and plain-text data
Read onlyNo accidental source edits
Purpose-built inspection

Large-file work without the usual waiting

TitanFile reads only the data window you need, keeping the interface responsive while the file remains safely on disk.

Bounded-memory viewing

Move from the beginning to the middle or end of multi-gigabyte files without loading the entire file into RAM.

Streaming search

Find literal text forward or backward, including matches that cross internal read boundaries.

Useful filtering

Show matching TXT and CSV lines, or retain complete enclosing JSON objects as valid JSON output.

File-aware statistics

Count lines for text and CSV files, and count objects when inspecting JSON.

Select, copy, export

Copy visible content and save clean filtered results without turning the viewer into an editor.

Text encoding support

Automatic UTF-8 and BOM-based UTF-16 handling, with safe replacement and status reporting for malformed input.

Choose your desktop

The same complete viewer on Windows and Ubuntu

Every download includes the complete TitanFile Viewer feature set on both supported platforms.

TitanFile Viewer on Windows 11

Windows 11

64-bit setup installer

A familiar desktop installation with Start menu integration and automatic uninstall support.

Download Windows setup
TitanFile Viewer on Ubuntu

Ubuntu Linux

Portable x86_64 AppImage

Download one portable application file, make it executable, and run it without a traditional installer.

Download Ubuntu AppImage
Simple licensing

Try it free. Keep it for $5.

Use the trial to confirm TitanFile works with your files, then purchase one lifetime license with a single payment through PayPal.

Free Trial
$0

Test TitanFile Viewer on your own large text, JSON, CSV, and log files before purchasing.

  • Windows 11 or Ubuntu
  • Large-file viewing and navigation
  • Search, filter, select, and copy
Windows Trial Ubuntu Trial
Best value
One-Time License
$5 USD

Purchase TitanFile Viewer once for continued licensed use. No recurring subscription.

  • Lifetime license
  • Complete viewer feature set
  • Windows or Ubuntu
Purchase securely with PayPal
Simple by design

From huge file to useful answer in three steps

The interface stays focused on inspection. There is no database setup, import process, or full-file parsing requirement before you can begin.

  1. 01

    Open

    Select a local text, JSON, CSV, or log file.

  2. 02

    Inspect

    Jump through the file, view counts, and copy visible content.

  3. 03

    Search or filter

    Locate text or create a clean filtered result for further work.

Stop asking your editor to do a viewer's job.

Open your next massive file with TitanFile.

Free Trial Buy for $5