Noobkit
Convert files, format data, edit text, and check colors with free tools in your browser.
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Popular Tools
Start with our most popular tools used by thousands daily
JWT Decoder
Decode and verify JSON Web Tokens
UUID Generator
Generate UUIDs (v4 and v7) with customizable options
Bcrypt Hasher
Generate secure bcrypt hashes with customizable rounds
Bcrypt Hash Compare
Compare plain text with bcrypt hashes to verify passwords
SHA-256 Hasher
Generate SHA-256 hashes from text or files with verification
JSON Validator
Validate JSON syntax and format with detailed error messages
CSV to Excel Converter
Convert CSV, TSV, or pasted table data to an Excel .xlsx workbook
JSON to Excel Converter
Convert JSON arrays and objects to a formatted Excel .xlsx workbook
IP Subnet Calculator
Calculate IP subnet ranges, network addresses, and CIDR blocks
Date Calculator
Calculate days between dates or add/subtract days from any date
Browser Size Calculator
View your browser viewport dimensions and use an on-screen ruler.
PDF to PNG Converter
Convert PDF pages to high-quality PNG images with page selection
5-Color Palette Generator
Generate harmonious random color palettes with lock functionality
Image Compressor
Compress PNG and JPG images entirely in your browser
Latitude Longitude Converter
Convert GPS coordinates between decimal degrees and degrees/minutes/seconds format
GPS Coordinates Distance Calculator
Calculate straight-line GPS coordinate distance in kilometers, meters, miles, and nautical miles
GeoJSON Point Generator
Convert latitude and longitude coordinates into a GeoJSON Point Feature. GeoJSON uses [longitude, latitude] coordinate order.
JSONPath Tester
Use this JSONPath tester to query JSON data online. Paste JSON, enter a JSONPath expression, and inspect the matched results.
Image Color Palette Extractor
Extract the main colors from an image and generate a color palette. All processing happens in your browser; the image is not uploaded to a server.
Image Base64 Converter
Convert images to Base64 data URLs and decode Base64 back to images
Time to Unix Converter
Convert dates and times to Unix timestamps or convert Unix timestamps back to human-readable dates
PDF Splitter & Reorder
Split PDF files, reorder pages by drag and drop, remove specific pages, and download the reorganized PDF
Timezone Converter
Convert a date and time between time zones.
XML Formatter & Validator
Check XML syntax, format XML, and minify XML
Password Generator
Generate secure passwords with customizable criteria. Supports character types, length control, symbol categories, and exclusion options. Cryptographically secure random generation.
Password Strength Checker
Analyze password strength with detailed scoring system. Check against common vulnerabilities, length requirements, character diversity, and security best practices.
Word Count Tool
Count words, characters, and sentences in English, Chinese, and Japanese text.
YAML Linter
Validate YAML syntax, format, and structure with detailed error reporting
TOML Validator
Use this TOML validator and linter to check TOML syntax online. Paste TOML text and find parsing errors quickly.
QR Code Generator
Generate custom QR codes with style options
AES File Encryption
Encrypt and decrypt files using AES-256-GCM encryption with password protection. Secure client-side processing with PBKDF2 key derivation and authenticated encryption.
PDF Merger
Merge multiple PDF files into a single document with page ordering support. Drag-and-drop file upload with preview functionality
PDF Page Rotator
Rotate individual PDF pages and download one combined document. Processing stays in your browser.
Random Name Picker & Giveaway Generator
Pick winners from a list of names for giveaways and prize draws.
Random Number Generator
Generate secure random integers within any range with fast, reliable randomness.
PDF Password Unlocker
Remove password protection from PDF files securely
Featured tool hubs
Browse focused tool collections for common workflows and related tasks.
Browse by Category
Discover tools organized by their purpose and functionality
Security & Authentication
9 toolsJWT tokens, password hashing, and security tools
Data Conversion
17 toolsConvert between different formats and encodings
Color & Design
3 toolsColor palettes, design tools, and visual utilities
Development Tools
14 toolsValidation, testing, and developer utilities
Document & Media
10 toolsImage processing and document conversion
Calculators & Math
4 toolsMathematical calculations and computational tools
Generators & QR
3 toolsGenerate QR codes, barcodes, and other visual elements
Security & Authentication
9 tools available
JWT Decoder
Decode and verify JSON Web Tokens
Bcrypt Hasher
Generate secure bcrypt hashes with customizable rounds
Bcrypt Hash Compare
Compare plain text with bcrypt hashes to verify passwords
MD5 Hasher
Generate MD5 hashes from text or files with verification
SHA-256 Hasher
Generate SHA-256 hashes from text or files with verification
SHA-512 Hasher
Generate SHA-512 hashes from text or files and compare them with a reference hash
Password Generator
Generate secure passwords with customizable criteria. Supports character types, length control, symbol categories, and exclusion options. Cryptographically secure random generation.
Password Strength Checker
Analyze password strength with detailed scoring system. Check against common vulnerabilities, length requirements, character diversity, and security best practices.
AES File Encryption
Encrypt and decrypt files using AES-256-GCM encryption with password protection. Secure client-side processing with PBKDF2 key derivation and authenticated encryption.
Data Conversion
17 tools available
Base64 Converter
Encode and decode Base64 strings
IPv4 Hex Converter
Convert IPv4 addresses to hexadecimal notation and vice versa
CSV to JSON Converter
Convert CSV data to JSON format with table preview
CSV to TSV Converter
Convert CSV or TSV with auto-detection and table preview
Excel to JSON Converter
Convert Excel files (.xlsx, .xls) to JSON format with multi-sheet support
CSV to Excel Converter
Convert CSV, TSV, or pasted table data to an Excel .xlsx workbook
JSON to Excel Converter
Convert JSON arrays and objects to a formatted Excel .xlsx workbook
Table to Markdown Converter
Free online converter to turn pasted HTML, CSV/TSV, or line-broken tables into clean Markdown with preview.
Color Converter
Convert color codes instantly between HEX, RGB, HSL, HSV/HSB, and CMYK with live preview and one-click copy.
UUID to Short Form Converter
Convert UUIDs to shorter formats: flickrBase58, cookieBase90, and uuid25Base36
Latitude Longitude Converter
Convert GPS coordinates between decimal degrees and degrees/minutes/seconds format
GeoJSON Point Generator
Convert latitude and longitude coordinates into a GeoJSON Point Feature. GeoJSON uses [longitude, latitude] coordinate order.
JSON to CSV Converter
Convert JSON data to CSV format with customizable delimiters and headers
Time to Unix Converter
Convert dates and times to Unix timestamps or convert Unix timestamps back to human-readable dates
Timezone Converter
Convert a date and time between time zones.
Full-width ↔ Half-width Converter
Convert full-width and half-width text for Japanese and mixed-language input. Choose spaces, letters, numbers, symbols, and kana with one-click copy.
UTF-8 BOM Adder
Add UTF-8 BOM to text files for Excel compatibility and fix Excel encoding issues
Color & Design
3 tools available
Color Variations Generator
Generate lighter, darker, alpha, and contrast-sufficient color variations
Color Contrast Checker
Check color contrast ratio and WCAG accessibility compliance between foreground and background colors
5-Color Palette Generator
Generate harmonious random color palettes with lock functionality
Development Tools
14 tools available
UUID Generator
Generate UUIDs (v4 and v7) with customizable options
UUID Validator
Check whether a UUID is valid and detect its version. Supports common UUID formats including UUID v4 and UUID v7.
JSON Validator
Validate JSON syntax and format with detailed error messages
Regex Tester & Matcher
Test regular expressions against text with instant matches
Text Diff Checker
Compare two texts side by side and highlight differences
Whitespace Trimmer
Trim leading and trailing spaces, tabs, and line breaks from text. Clean copy for code, CSV, and form inputs with instant client-side processing.
NDJSON Validator
Validate NDJSON line by line, format newline-delimited JSON, and quickly find which line contains invalid JSON.
Cron Editor
Turn cron expressions into human-readable schedules
Browser Size Calculator
View your browser viewport dimensions and use an on-screen ruler.
Keyboard Test
Test your keyboard online and check whether every key works correctly. Press any key to see it highlight instantly.
JSONPath Tester
Use this JSONPath tester to query JSON data online. Paste JSON, enter a JSONPath expression, and inspect the matched results.
XML Formatter & Validator
Check XML syntax, format XML, and minify XML
YAML Linter
Validate YAML syntax, format, and structure with detailed error reporting
TOML Validator
Use this TOML validator and linter to check TOML syntax online. Paste TOML text and find parsing errors quickly.
Document & Media
10 tools available
Image Color Picker
Extract pixel colors from images, get hex and RGB values instantly
PDF to PNG Converter
Convert PDF pages to high-quality PNG images with page selection
Image Compressor
Compress PNG and JPG images entirely in your browser
Image Color Palette Extractor
Extract the main colors from an image and generate a color palette. All processing happens in your browser; the image is not uploaded to a server.
Image Base64 Converter
Convert images to Base64 data URLs and decode Base64 back to images
PDF Splitter & Reorder
Split PDF files, reorder pages by drag and drop, remove specific pages, and download the reorganized PDF
Word Count Tool
Count words, characters, and sentences in English, Chinese, and Japanese text.
PDF Merger
Merge multiple PDF files into a single document with page ordering support. Drag-and-drop file upload with preview functionality
PDF Page Rotator
Rotate individual PDF pages and download one combined document. Processing stays in your browser.
PDF Password Unlocker
Remove password protection from PDF files securely
Calculators & Math
4 tools available
IP Subnet Calculator
Calculate IP subnet ranges, network addresses, and CIDR blocks
Date Calculator
Calculate days between dates or add/subtract days from any date
Interest Calculator
Calculate simple interest and total amount for investments and loans
GPS Coordinates Distance Calculator
Calculate straight-line GPS coordinate distance in kilometers, meters, miles, and nautical miles
Generators & QR
3 tools available