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Parse Apache access and error logs.
Generate API-style keys for development.
Generate mock API responses from schema.
Validate barcode format and check digit.
Inspect Base64 image data and dimensions.
Decode and inspect Base64 content.
Convert between decimal, hex, binary, octal.
Generate bcrypt hashes for passwords.
Generate multiple UUIDs for testing.
Convert between byte array and string.
CRC, checksum for files and strings.
Beautify HTML, CSS, JS, and more.
Diff two code snippets side by side.
Minify HTML, CSS, and JavaScript.
Build design system color palettes.
Check CORS headers for a URL.
Lookup card type and issuer from BIN.
Validate card numbers with Luhn.
Build cron expressions from options.
Parse cron and show next run times.
Generate CSRF tokens for testing.
Minify CSS for production.
CSS property reference and examples.
Analyze CSV structure and stats.
Format and align CSV columns.
View large CSV files with virtual scroll.
Convert between CSV and TSV.
Validate CSV format and encoding.
View and sort CSV data in browser.
Convert cURL to fetch, axios, or other formats.
Parse data URIs and extract content.
Add or subtract days from a date.
Parse and analyze email headers.
Validate email format and deliverability.
Countdown to or from Unix epoch.
Escape and unescape for HTML, JS, and URLs.
Explain Excel formulas step by step.
Generate fake names, emails, addresses.
Detect file type from magic bytes.
Format GraphQL queries and schemas.
Test GraphQL queries against an endpoint.
Generate MD5, SHA-1, SHA-256, and other hashes.
Identify hash type from sample.
Encode and decode hex.
Generate HMAC for API signing.
Generate Apache .htaccess rules.
Decode HTML entities.
Minify HTML for production.
Preview HTML and CSS in iframe.
Validate HTML and report errors.
Explain HTTP headers.
Parse HTTP request or response headers.
Build HTTP requests for testing.
HTTP status code reference and meanings.
Validate IBAN format and checksum.
Lookup IP geolocation and info.
Validate ISBN-10 and ISBN-13.
Parse and format ISO 8601 dates.
Minify JavaScript for production.
Diff two JSON objects or arrays.
View and explore JSON files.
Format and beautify JSON with indent.
Explore and search JSON keys.
Minify JSON for production.
Generate JSON Schema from sample.
View JSON as expandable tree.
Validate JSON and show errors.
Create and sign JWT tokens for testing.
Decode and inspect JWT payload and header.
Analyze and summarize log files.
View and search log files.
MIME type reference for file types.
Generate short unique IDs.
Parse Nginx access logs.
Generate secure passwords for dev and testing.
Check password strength and entropy.
Format phone numbers by country.
Common port numbers reference.
Build query strings from params.
Parse query string into key-value pairs.
Generate random hex strings.
Build regex with visual helpers.
Quick reference for regex syntax.
Explain regex pattern in plain language.
Common regex patterns for email, URL, etc.
Test regex against sample text with highlights.
Send REST API requests from the browser.
Validate robots.txt syntax and rules.
Encode and decode ROT13.
Lookup SQL error codes and messages.
Format SQL for readability.
Generate Tailwind CSS classes from values.
Generate timestamps in common formats.
Convert time between time zones.
Visualize tokenization for LLMs.
Escape and unescape Unicode.
Convert Unix timestamp to date and back.
Encode and decode URL components.
Parse and inspect URL components.
Validate URL format and accessibility.
Validate UUID format and version.
Decode and validate vehicle VIN.
Receive and inspect webhook payloads.
Format and indent XML.
Convert between XML and JSON.
Minify XML by removing whitespace.
Validate XML against schema or DTD.
Convert between YAML and JSON.
Validate YAML syntax.