CrateX.app

Password Generator

Supports generating strong passwords with customizable length (up to 128 chars) and character types. Features ambiguous character exclusion and real-time strength/crack time estimation using zxcvbn, ensuring account security and privacy.

QR Code Generator

Built-in templates for text, URL, email, SMS, Wi-Fi, and vCard. Supports adding logos, customizing colors/size and error correction levels. Exports to PNG/JPG/SVG, suitable for all QR code creation scenarios.

Unit Converter

Supports conversion between Metric, Imperial, and US units, covering 13 categories including length, weight, temperature, area, volume, time, speed, pressure, energy, power, storage, angle, and frequency. Provides real-time precise calculations and scientific notation, suitable for engineering, research, and daily use.

Timestamp Converter

Supports conversion between Unix timestamps and dates, automatically detecting seconds/milliseconds. Provides local, UTC, and global city timezone conversions, supporting ISO 8601, RFC 2822, SQL, and other formats. Suitable for log analysis, development debugging, and database maintenance.

UUID Generator

Supports batch generation of UUID v1 and v4, with custom options for case, hyphens, and quantity. Supports one-click copy and export, suitable for database primary keys, API tokens, and distributed system tracking IDs. Runs locally—privacy-first, works offline.

World Clock

Supports tracking local time in multiple cities worldwide, automatically handling Daylight Saving Time transitions. Offers digital and analog clock modes, supports 24-hour format and second-level display, suitable for cross-timezone collaboration and schedule planning.

Case Converter

Supports multiple text format conversions, including camelCase, underscores, hyphens, and case variants. Provides basic formats (uppercase, lowercase, capitalize) and programming formats (camelCase, snake_case, kebab-case, etc.), supports batch conversion, suitable for programming naming, API design, and document formatting.

Text Counter

Provides text statistics and analysis, including character/word count, word frequency analysis, reading time estimation, and complexity assessment. Supports multilingual detection and character frequency analysis, suitable for social media character limits, SEO optimization, and academic writing.

Text Formatter

Supports text cleaning and format normalization, including merging extra spaces, unifying line breaks, removing empty lines, and paragraph reorganization. Suitable for web copy cleaning, document organization, and cross-platform text normalization.

Text Diff Viewer

Supports text, code, and configuration file comparison with side-by-side and unified view modes. Highlights additions, deletions, and changes line by line, supports synchronized scrolling and one-click swap, suitable for code review, document proofreading, and configuration verification.

Markdown Converter

Supports bidirectional conversion between Markdown and HTML with real-time preview rendering. Supports GFM extended syntax, code highlighting, KaTeX math formulas, and Mermaid diagrams, suitable for document writing, blog publishing, and email rich text generation.

Base64 Encode/Decode

Supports Base64 encoding and decoding of text and binary data with URL-safe and MIME format options. Supports Data URL parsing, line-by-line encoding, and automatic format recognition, suitable for API calls, email attachments, and data embedding.

URL Encode/Decode

Supports URL percent encoding and decoding, handling special characters, spaces, and multilingual text. Auto-detects encoding format, supports query parameter processing, suitable for API calls, form submissions, and link sharing.

HTML Escape/Unescape

Supports HTML entity escaping and unescaping, handling special characters and tags. Auto-detects named and numeric entity formats, prevents XSS attacks, suitable for displaying user input, code examples, and secure content processing.

ASCII Converter

Supports bidirectional conversion between characters and ASCII codes, displaying decimal, hexadecimal, binary, and octal values in real-time. Supports batch conversion and control character parsing, suitable for programming development, communication protocol analysis, and teaching demonstrations.

Unicode Converter

Supports bidirectional conversion between characters and Unicode code points, handling emoji, surrogate pairs, and multilingual text. Auto-detects multiple formats (U+, \u, 0x, decimal), suitable for character encoding debugging, data analysis, and security detection.

Base Converter

Supports number conversion between binary, octal, decimal, and hexadecimal, automatically recognizing 0b/0o/0x prefixes. Instant linked updates, suitable for programming debugging, bitwise operation learning, and permission bit conversion.

JSON Formatter

Supports JSON data formatting, minification, and validation, providing real-time syntax checking and error location (line/column hints). Supports key sorting and custom indentation, suitable for API debugging, configuration management, and code review.

Color Converter

Supports color format conversion between HEX, RGB, HSL, and CMYK, providing real-time preview and color picker. Automatic synchronized conversion, suitable for design handoff, CSS styling, and style guide unification.

CSS Unit Converter

Supports conversion between CSS units like px, em, rem, %, vw, vh, providing responsive breakpoint settings. Automatically calculates context-dependent values, suitable for responsive layout development, frontend implementation, and style adaptation.

Lorem Generator

Generates Lorem Ipsum placeholder text, supporting custom paragraph, word, or character counts. Provides a start sentence option, suitable for layout testing, prototype filling, and content placeholder.

Image Format Converter

Supports conversion between WebP, PNG, JPEG, AVIF, etc., compatible with HEIC/SVG uploads. Provides quality adjustment and batch processing; all conversions are done locally to protect privacy.

Image Resizer

Supports batch resizing of images by width, height, or ratio, offering modes like crop, fit, and stretch. Maintains aspect ratio, supports thumbnail generation and ZIP download.

Image Compressor

Supports batch compression of PNG, JPEG, WebP, AVIF, HEIC images, offering quality adjustment, longest edge limit, and EXIF removal. Significantly reduces file size while maintaining quality, facilitating sharing and storage.

Image Cropper

Supports image cropping, rotation, and flipping. Provides drag-and-drop selection, precise pixel input, and aspect ratio locking, suitable for avatar creation, cover cropping, and border removal.