๐งฐ NanoTools
Free online tools for developers. Fast, private, no sign-up required.
All processing happens in your browser โ your data never leaves.
๐ Text Tools
Character & Word Counter
Count characters, words, sentences, and paragraphs in your text
Diff Checker
Compare two texts and highlight the differences
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case
Slug Generator
Convert text into clean, URL-friendly slugs
Text Sorter
Sort lines alphabetically, by length, reverse, or remove duplicates
Whitespace Remover
Remove extra whitespace, blank lines, and trim text
Word Counter
Count words, estimate reading time, and check SNS character limits
Text Repeater
Repeat text multiple times with custom separator
Emoji Picker
Browse and copy emojis by category with one click
Line Counter
Count total lines, blank lines, code lines, and comment lines
๐ Encoding / Decoding
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 to text instantly
URL Encoder / Decoder
Encode or decode URL components for safe transmission
JWT Encoder / Decoder
Decode and inspect JWT tokens โ header, payload, and expiration
HTML Entity Encoder
Encode and decode HTML entities for safe embedding
Text to Binary
Convert text to binary representation and back
Image to Base64
Convert image files to Base64 encoded strings
Text to ASCII
Convert between text and ASCII/Unicode code values
๐ Hash & Crypto
๐ป Code Formatters
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting
Regex Tester
Test regular expressions with real-time match highlighting
Markdown Preview
Write Markdown and preview the rendered HTML in real time
JSON to YAML
Convert between JSON and YAML formats bidirectionally
CSV to JSON
Convert between CSV and JSON formats bidirectionally
JSON Validator
Validate JSON with error location and line numbers
HTML to Markdown
Convert HTML markup to Markdown format
Markdown to HTML
Convert Markdown text to HTML with live preview
chmod Calculator
Calculate Unix file permissions with interactive checkboxes
SQL Formatter
Format and beautify SQL queries with keyword-based formatting
โก Generators
UUID Generator
Generate random UUID v4 identifiers
QR Code Generator
Generate QR codes from text, URLs, or any data
Lorem Ipsum Generator
Generate placeholder text for your designs and layouts
Password Generator
Generate secure random passwords with customizable options
Crontab Generator
Build and parse cron expressions with next run time preview
Placeholder Image
Generate placeholder images with custom size, color, and text
Fake Data Generator
Generate random names, emails, phone numbers, and addresses
IP Address Lookup
Look up your public IP address instantly
Random Number Generator
Generate random numbers with range, dice, and lottery modes
Screen Resolution
Display screen resolution, viewport size, and DPR
๐ Converters
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal
CSS Unit Converter
Convert between px, rem, and em with configurable base font size
Byte Converter
Convert between B, KB, MB, GB, TB, and PB units
Percentage Calculator
Calculate percentages, ratios, and percentage changes
Epoch Converter
Convert epoch timestamps in milliseconds with multiple formats