All Tools
JSON Formatter Format, validate, minify, and inspect JSON with instant feedback
JSON to YAML Convert JSON into YAML with readable structure and browser-only processing
JSON to TypeScript Generate TypeScript interfaces from JSON with browser-only processing
JSON Diff Compare two JSON documents, inspect changed paths, and export a readable diff
JSONPath Query Run JSONPath queries against JSON and inspect matched values or paths
JSON Schema Validator Validate JSON against a JSON Schema and inspect validation errors
Base64 Converter Encode plain text into Base64 or decode Base64 back into UTF-8 text
URL Encode/Decode Encode or decode URL text, query components, and full URLs
JWT Decode Decode JWT header and payload locally, inspect claims, and keep the token
HTML Entities Encode or decode HTML entities locally and inspect safe text transformations instantly
Hex to ASCII Convert plain text into hex or decode hex back into readable UTF-8 text
Unicode Lookup Inspect characters, code points, escapes, and byte representations from input text
Hash Generator Hash input text instantly with browser-native algorithms and export the digest in hex or Base64
HMAC Generator Generate keyed HMAC signatures locally with common digest algorithms and export the result instantly
HMAC Verify Verify an expected HMAC signature against local input, secret, algorithm, and output format
UUID Generator Generate UUID v4 or v7 locally, in single or batch output, with no server round trip
Password Generator Generate strong passwords locally with configurable length, sets, and batch output
AES Encrypt / Decrypt Encrypt or decrypt text locally with AES-GCM and a passphrase-derived key
RSA Key Pair Generator Generate RSA key pairs locally and export public and private PEM blocks
RSA Encrypt / Decrypt Encrypt short text with a public RSA key or decrypt Base64 ciphertext with the matching private key
Keypair / PEM Viewer Inspect PEM blocks locally, including type, headers, and decoded body size
PGP Inspect / Armor Decode Inspect ASCII-armored PGP blocks locally and decode armor metadata and body size
Unix Timestamp Convert local date and time into Unix seconds or milliseconds, or paste a timestamp to reverse it
Timezone Converter Compare one date and time across common engineering time zones without leaving the browser
Cron Builder Build a five-field cron expression quickly and export the result with a readable explanation
ISO 8601 Builder Construct ISO 8601 strings with UTC, local offset, or date-only output in one fast browser tool
Date Difference Calculate the exact time span between two local datetimes and export the result instantly
Case Converter Convert text into lower, upper, camel, Pascal, snake, kebab, title, sentence, and more
Sort & Dedupe Sort lines, remove duplicates, trim whitespace, and clean text lists instantly
Find & Replace Find text or regex matches and replace them instantly with live output and match counts
Markdown Preview Preview markdown live with a rendered output pane and browser-only processing
Lorem Ipsum Generate placeholder paragraphs, sentences, or lines instantly with browser-only controls
Contrast Checker Check WCAG contrast ratios for foreground and background colors with live preview
HEX / RGB / HSL Convert HEX, RGB, and HSL values instantly with a live color preview and CSS-ready output
Palette Generator Generate tints, shades, and harmony palettes from one base color with CSS-ready output
Gradient Builder Build linear or radial gradients with editable stops, live preview, and CSS-ready output
Tailwind Color Reference Browse Tailwind CSS color families with both v3 legacy hex values and the current v4 palette
Image Compressor Compress images locally, choose JPEG or WebP output, target a file size, and download the result
Image Resize Resize images locally with exact dimensions, aspect lock, presets, and browser-only export
Convert Format Convert images locally between JPEG, PNG, and WebP with instant preview and browser-only export
SVG Optimizer Optimize SVG markup locally by removing comments, metadata, and editor-only attributes before export
Favicon Generator Generate common favicon and app icon PNG sizes locally from one source image with browser-only export
HTTP Status Codes Look up HTTP status codes quickly with categories, explanations, and common API usage guidance
MIME Lookup Look up MIME types, file extensions, and common usage notes for uploads, downloads, and HTTP responses
URL Parser Parse a URL into protocol, host, credentials, pathname, query params, and fragment details
CIDR Calculator Calculate subnet masks, network ranges, broadcast addresses, and usable hosts from an IPv4 CIDR block
User Agent Parser Parse a user agent string into browser, engine, operating system, device, and bot details
SQL Formatter Format SQL queries locally with readable indentation, keyword casing, and quick export actions
Code Formatter Format JavaScript, TypeScript, JSON, HTML, CSS, Markdown, and YAML locally with parser-aware output
Diff Viewer Compare two text or code inputs locally with line-level differences, side-by-side review, and diff export
Escape Strings Escape or unescape developer string literals locally for JavaScript, JSON, and regex-safe text
Snippet Generator Generate practical developer snippets locally from reusable templates and editable fields
Regex Tester Test regular expressions live, inspect matches, and jump straight to matched text
Regex Explainer Break down a regular expression into readable pieces and understand what each token does
Regex Builder Build common regex patterns from structured inputs and test them against sample text
Pattern Library Browse reusable regex patterns, inspect examples, and copy practical snippets quickly
Cheatsheet Look up regex anchors, classes, quantifiers, groups, and flags in one fast reference