All the Tools You Need, All in One Place.
Free online tools for calculations, conversions, images, text, and more. Fast, simple and easy to use.
338+Focused Tools
11Categories
No SignupVisitor account
Browser-FirstWhere supported
Clear ResultsGuidance included
Developer Tools
58 focused utilities
JSON Formatter
Format, validate, minify, and copy JSON.
Base64 Encoder Decoder
Encode and decode Base64 text instantly.
JWT Decoder
Decode JWT header and payload safely.
URL Encoder Decoder
Encode and decode URLs or query strings.
UUID Generator
Generate random UUID v4 values.
Timestamp Converter
Convert Unix timestamps and readable dates.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.
Regex Tester
Test regular expressions against sample text.
Cron Expression Generator
Build common cron expressions quickly.
Password Generator
Generate secure random passwords.
Lorem Ipsum Generator
Generate placeholder text for layouts.
HTML Minifier
Minify HTML code instantly.
CSS Minifier
Minify CSS code instantly.
JS Minifier
Minify JavaScript code instantly.
HTML Beautifier
Beautify and indent your HTML code.
CSS Beautifier
Beautify and format CSS code.
Color Contrast Checker
Check WCAG contrast ratio between two colors.
HTML Email Preview
Preview responsive HTML email code safely in a sandbox.
SQL Formatter
Format and indent SQL queries for easier reading.
CSV to JSON Converter
Convert CSV rows into formatted JSON objects.
JSON to CSV Converter
Convert an array of JSON objects into CSV.
HTML Error Validator
Check a public page with the W3C-compatible Nu validation service.
SSL Certificate Decoder
Decode a pasted PEM certificate without transmitting it.
CSR Generator
Generate a private key and certificate signing request in your browser.
Font Converter
Convert TTF, OTF, WOFF and WOFF2 fonts locally.
ZIP File Creator
Compress multiple files into a ZIP archive in your browser.
ZIP File Extractor
Inspect and securely extract selected ZIP contents.
ZIP / TAR Archive Converter
Convert between ZIP and uncompressed TAR archives locally.
CSP Header Builder & Validator
Build and inspect a Content-Security-Policy header with common directives and safe defaults.
.htaccess & Nginx Redirect Generator
Convert old-to-new URL mappings into Apache .htaccess or Nginx redirect rules.
Responsive Image srcset Generator
Create responsive srcset, sizes and picture markup from image filenames and width variants.
SRI Hash Generator
Generate SHA-256, SHA-384 or SHA-512 Subresource Integrity values for a local file or public asset.
Permissions-Policy Header Generator
Build a Permissions-Policy header for browser capabilities such as camera, microphone and geolocation.
PWA Manifest Generator & Validator
Create and validate a web app manifest with names, icons, display mode, colours and start URL.
Public Webpage Source Viewer
Fetch and inspect bounded public HTML source with line numbers and a downloadable text copy.
JSON ↔ YAML Converter
Convert structured data between JSON and a practical safe YAML subset in the browser.
JSON ↔ XML Converter
Convert JSON objects and arrays to XML or turn ordinary XML elements into JSON.
JSONL ↔ JSON Converter
Convert newline-delimited JSON records to a JSON array and back with row-level validation.
Markdown ↔ HTML Converter
Convert common Markdown formatting to sanitized HTML or readable HTML back to Markdown.
HTML Entity Encoder & Decoder
Encode reserved HTML characters or decode named and numeric HTML entities.
URL Parser & Query Builder
Parse URL components, edit query parameters and rebuild an encoded URL.
User-Agent Parser
Identify common browser, rendering engine, operating system and device signals in a user-agent string.
CSS clamp() Fluid Type Generator
Generate responsive CSS clamp values from minimum, maximum and viewport measurements.
CSS Gradient Generator
Build linear or radial CSS gradients with adjustable angle, colours and stop positions.
CSS Box Shadow Generator
Create and preview CSS box-shadow values including inset, blur, spread and colour.
HEX, RGB & HSL Color Converter
Convert colours between HEX, RGB and HSL while previewing the normalized result.
Binary, Decimal & Hex Converter
Convert integers between binary, octal, decimal and hexadecimal representations.
CSV Cleaner & Validator
Detect delimiters, normalize row widths, identify malformed rows and export cleaned CSV.
CSV Splitter & Merger
Split a CSV by row count or merge compatible CSV files with one shared header.
Line Ending Converter
Convert text files between LF, CRLF and CR line endings and download a clean copy.
Text Encoding Converter
Read UTF-8, UTF-16 or Latin-1 text and export it as UTF-8 or UTF-16.
AES Text Encryption & Decryption
Encrypt or decrypt text locally with AES-GCM and a password-derived key.
File Checksum Verifier
Calculate a local file checksum and compare it with an expected SHA-256, SHA-384 or SHA-512 value.
Code Secret Scanner
Scan pasted code for patterns resembling exposed API keys, tokens, private keys and credentials.
MIME & File Type Inspector
Inspect local file signature bytes, browser MIME type, extension, size and modification date.
SSH Public Key Fingerprint Viewer
Calculate SHA-256 and legacy MD5 fingerprints from an OpenSSH public key.
JSON Schema Validator
Validate JSON against common schema rules including types, properties, required fields, arrays and patterns.
HTML Table Generator
Turn CSV-style data into accessible responsive HTML table markup with optional headers and caption.