Text Viewer: TXT, Log & JSON

Trung-Hieu Tran

Contains ads

About this app

Text Viewer opens plain text, log, JSON, CSV, XML, Markdown and source code files fast, even very large ones. Files are read in pieces instead of all at once, so a big server log or data export opens quickly and scrolls smoothly. Search, jump to any line and read with syntax colors, all offline and without an account.

WHO IT IS FOR
• Developers and IT staff checking logs and config files on the go
• Anyone who received a .txt, .json or .csv file and cannot open it
• Students reading source code and data sets

OPEN ANY TEXT FILE
• TXT, LOG, JSON, CSV, TSV, XML, YAML, INI, CONF, MD, SQL, HTML and more
• Source code files open as text, with syntax colors for popular languages
• Large files open fast: no "file too big" errors for big logs and exports
• Open from your file manager, email, chat apps or the Share menu
• Automatic text encoding detection, including UTF-8, UTF-16 and common legacy encodings
• Compressed logs: open .gz files directly, or pick a text file inside a .zip

READ COMFORTABLY
• Line numbers and word wrap on or off
• Syntax highlighting for code, JSON, XML, YAML and SQL
• Light and dark themes
• Go to any line in one step

SEARCH
• Find text in the whole file and jump from match to match
• Regular expression search for power users (Pro)

LOG FILES MADE READABLE
• Filter by log level: show only ERROR, WARN, INFO or DEBUG lines (Pro)
• Follow mode jumps to the end of the file (Pro)

JSON VIEWER
• Pretty print JSON with one tap
• Collapsible tree view to explore nested objects and arrays (Pro)
• Save a formatted copy of JSON (Pro)

CSV VIEWER
• See CSV files as a real table
• Sort by any column and filter rows (Pro)

MARKDOWN PREVIEW
• Read .md files as formatted text with headings, tables and code blocks

EXPORT
• Export a file to PDF (Pro)
• Your original file is never changed

USE CASES
• Check a crash log or server log someone sent you, then jump straight to the error line
• Open a CSV export from a spreadsheet, bank or CRM and read it as a table instead of a wall of commas
• Read an API response or config file saved as JSON in a clean, indented layout
• Review source code, scripts, SQL dumps and XML files during a code review away from your desk
• Read a README or notes file as formatted Markdown

QUESTIONS PEOPLE ASK
• How big can a file be? The file is indexed line by line instead of loaded into memory at once, so logs and exports of many megabytes open and scroll without freezing.
• Why does my file show strange characters? The app detects the text encoding automatically, so most files written in UTF-8, UTF-16 or older encodings display correctly.
• Can I edit files? No. Text Viewer is a viewer, so your files are never changed by accident.
• Does it need internet? No. Every file is opened offline on your phone.
• Will ads interrupt reading? No ad is shown while you scroll a file.
• Can I open a file from email or a chat app? Yes. Tap the attachment and choose Text Viewer, or use Share.

FREE AND PRO
Opening and reading files of any size is free, together with search, go to line, line numbers, word wrap, themes, syntax highlighting, encoding detection, JSON pretty print, the CSV table and Markdown preview. The free version may show ads, never while you are scrolling a file. Text Viewer Pro removes ads and adds regular expression search, log level filters and follow mode, the JSON tree view and formatted save, CSV sort and filter, and PDF export. Choose a monthly, 3-month or yearly subscription, or a one-time lifetime purchase. Prices vary by country, and subscriptions can be cancelled any time in Google Play. You can also watch a short video for a 2-hour Pro Pass.

PRIVATE BY DESIGN
• Files are read on your phone and never uploaded
• No account or registration
• No "All files access" permission: the app opens only the files you pick or share
• Ads use an advertising ID, see our privacy policy

Install Text Viewer and open any log, data file or code file in seconds.

What’s new

• Bookmark lines and jump between them
• Share the lines around a spot, with file name and line numbers
• CSV sorting is much faster on big tables