TXT to JSON Converter
Convert plain text files to JSON format with multiple parsing modes. Transform logs, lists, configs, or any text data into structured JSON for processing.
Conversion Options
Each line becomes an array element
Recommended Settings
TXT to JSON Parsing Modes
- •Lines to Array: Convert lists, logs, or line-separated data to JSON arrays
- •Key-Value Pairs: Parse config files with key:value or key=value format
- •Numbered Lines: Create indexed JSON objects from text (line_1, line_2, ...)
- •Paragraphs: Group text by blank-line separators into array of strings
- •Words to Array: Split entire text into individual word elements
Type Coercion Features
- •Auto-detect booleans: true/false, yes/no, on/off
- •Auto-detect numbers: integers and decimals
- •Auto-detect null: null, nil, none keywords
- •Preserves strings when type is ambiguous
- •Works across all parsing modes
Pro Tips
- •Enable 'Trim whitespace' to remove leading/trailing spaces from each line
- •Use 'Skip empty lines' to ignore blank lines in your text file
- •Key-Value mode supports both colon (:) and equals (=) separators
- •Type coercion converts 'true' to boolean true, '123' to number 123
Most Popular
Lines to Array mode with trim whitespace and skip empty lines enabled
When to Use This Tool
Convert application logs or server logs to JSON for analysis. Use Lines to Array mode to parse each log entry as an array element. Perfect for importing logs into databases, analytics tools, or log aggregators that accept JSON.
Parse simple config files in key:value or key=value format to JSON. Use Key-Value mode to convert .env files, INI-style configs, or property files to JSON for modern config systems or cloud platforms.
Transform text-based data exports into JSON for ETL pipelines. Convert CSV columns (after splitting), lists of items, or structured text data into JSON format for database imports or API consumption.
Convert simple lists (shopping lists, todo lists, feature lists) to JSON arrays. Use Lines to Array mode to transform text lists into JSON for web apps, mobile apps, or data processing scripts.
Extract paragraphs from text documents as JSON arrays. Use Paragraphs mode to split documents by blank lines, creating structured JSON from articles, documentation, or multi-section text files.
Convert text files to JSON for NLP, sentiment analysis, or text mining. Use Words to Array mode to tokenize text into individual words, or Paragraphs mode for sentence-level analysis.
How It Works
Paste or type text into the input field
Select parsing mode based on your text structure
Configure processing options (trim, skip empty, type coercion)
Tool automatically converts text to JSON in real-time
View statistics: lines processed, items created, empty lines skipped
Apply formatting options (pretty print, indentation)
Copy formatted JSON or download as .json file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Pure JavaScript for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
What parsing modes are available?
Five modes: (1) Lines to Array - each line becomes array element, (2) Key-Value Pairs - parse key:value or key=value into objects, (3) Numbered Lines - lines become line_1, line_2 properties, (4) Paragraphs - group by blank lines, (5) Words to Array - split into individual words.
How does type coercion work?
When enabled, the tool auto-detects data types: 'true'/'yes'/'on' become boolean true, 'false'/'no'/'off' become false, 'null'/'nil'/'none' become null, and numeric strings like '123' or '45.67' become numbers. Otherwise everything stays as strings.
What separators work for Key-Value mode?
Key-Value mode accepts both colon (:) and equals (=) separators. It automatically detects which one you're using per line. Examples: 'name: John' or 'name=John' both work. The first separator found on each line is used.
Can I process large text files?
Yes! The tool handles large text files entirely in your browser with no size limits. Processing is instant and happens client-side. For extremely large files (100MB+), conversion may take a few seconds depending on your device.
How are empty lines handled?
Enable 'Skip empty lines' to ignore blank lines completely. When disabled, empty lines are preserved as empty strings in arrays or skipped in Key-Value mode. The statistics panel shows how many empty lines were skipped.
What's the difference between Lines to Array and Words to Array?
Lines to Array treats each line as one array element, preserving line structure. Words to Array splits ALL text by spaces into individual words, creating an array of every single word regardless of which line it was on.
Can I use this for log file analysis?
Absolutely! Use Lines to Array mode to convert logs into JSON arrays. Each log line becomes an array element. Enable type coercion to auto-detect numbers in logs. Perfect for importing logs into ElasticSearch, Splunk, or databases.
Is my data sent to a server?
No! All conversion happens 100% client-side in your browser using JavaScript. Your text files never leave your computer. The tool works completely offline after initial page load. Your data is completely private and secure.