Our date time format converter supports ISO 8601, RFC 2822, Unix timestamps (seconds and milliseconds), and fully customizable date patterns. Whether you're debugging API responses, converting database timestamps, or formatting dates for display, this tool handles it all instantly in your browser.

Transform files and text between multiple encoding formats including Base64, Hex, Data URL, and URL encoding. Perfect for encoding files for API payloads, embedding images as Data URLs, decoding Base64 strings back to downloadable files, or handling binary data. All conversions happen instantly in your browser.

Paste messy JSON and get beautifully formatted, syntax-highlighted output. Our JSON formatter validates your JSON in real-time, catching syntax errors instantly. Minify JSON for production, or expand it for readability. Perfect for debugging API responses, editing config files, or cleaning up JSON data.

Generate cryptographically secure UUID v4 identifiers with one click. Need multiple UUIDs? Generate them in bulk for database seeding, testing, or any scenario requiring unique identifiers. All UUIDs are generated using your browser's secure random number generator.

Convert images between popular formats including PNG, JPEG, and WebP. Adjust quality settings for lossy formats and see real-time file size comparisons. Perfect for optimizing images for web, converting screenshots, or preparing images for different platforms. All processing happens in your browser - your images never leave your device.

Resize images to exact dimensions or scale by percentage. Maintain aspect ratio for proportional scaling, choose output format, and adjust quality for optimal compression. Perfect for preparing images for social media, thumbnails, or web optimization. Your images stay private - all processing is done locally in your browser.

Compress several images at once without uploading them. Pick JPEG or WebP output, set a quality, cap the width or height, or enter a target size in KB and the tool picks the highest quality that fits. If a compressed file would come out larger than the original, you get the original back instead.

Turn HEIC/HEIF photos from an iPhone or iPad into JPG, PNG or WebP. Drop one photo or a batch, pick the format and quality, and download the files one by one or all at once. Conversion runs on your device: Safari uses its built-in HEIC support, other browsers use a decoder that loads only on this page. Re-encoding drops EXIF data, including GPS location.

Create QR codes instantly from any text, URL, or data. Customize foreground and background colors, adjust size, and export in multiple formats including PNG, JPEG, and SVG. Perfect for sharing links, contact information, or any data that needs to be easily scannable. All QR codes are generated locally in your browser.

Enter your network name, password and security type to get a Wi-Fi QR code. Guests point their phone camera at it and tap to join, without typing the password. Supports WPA, WPA2, WPA3, WEP, open and hidden networks. Download it as PNG, JPEG or SVG, or print a card with the network name. The code is made in your browser and the password is never uploaded.

Transform tabular data between CSV, TSV, and HTML table formats instantly. The converter auto-detects whether your input is comma or tab-separated, properly handles quoted fields with embedded delimiters, and generates clean output. Perfect for preparing data for spreadsheets, web pages, or databases. All processing happens in your browser.

Generate cryptographic hashes and checksums for any file using MD5, SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. Perfect for verifying file integrity, detecting file modifications, or generating hashes for security purposes. Compare calculated hashes against known values to ensure files haven't been tampered with. All processing happens locally in your browser.

Transform text to and from various Unicode escape formats including JavaScript/JSON (\uXXXX), HTML decimal (&#XXXX;), HTML hex (&#xXXXX;), CSS (\XXXXXX), Python (\uXXXX, \UXXXXXXXX), and Unicode code point notation (U+XXXX). Perfect for handling special characters in code, debugging encoding issues, or working with internationalized text. View detailed character information including code points and Unicode block names.

Create cryptographically secure random passwords using your browser's built-in crypto API. Customize password length from 4 to 128 characters, choose character sets (uppercase, lowercase, numbers, symbols), and generate multiple passwords at once. See real-time password strength indicator. Perfect for creating strong, unique passwords for all your accounts. All passwords are generated locally - nothing is ever sent over the network.

Analyze your text with comprehensive statistics including word count, character count (with and without spaces), sentence count, paragraph count, and line count. Get estimated reading time and speaking time for presentations. Perfect for writers, students, content creators, and anyone who needs to meet word count requirements. All processing happens instantly in your browser.

Convert colors seamlessly between HEX, RGB, HSL, and HSV color formats. Enter any color value and instantly see conversions to all other formats. Live color preview shows exactly what your color looks like. Perfect for web developers, designers, and anyone working with digital colors. All conversions happen instantly in your browser.

Compare two texts and instantly see what's been added, removed, or changed. Differences are highlighted with colors: green for additions, red for deletions. Perfect for comparing code versions, document revisions, or any text content. Use for code reviews, proofreading, or tracking changes in any text. All comparison happens locally in your browser.

Test and debug regular expressions with instant match highlighting. Enter your regex pattern and test string to see all matches highlighted in real-time. View capture groups for each match. Supports all JavaScript regex flags (g, i, m, s, u). Perfect for learning regex, debugging patterns, or validating input formats. All processing happens locally in your browser.

Paste a JWT to see its header and payload as formatted JSON. The time claims exp, nbf and iat are shown as dates with an expired or not-yet-valid status, and alg "none" is flagged. You can also verify the signature: HS256/384/512 with a shared secret, or RS, PS and ES 256/384/512 with a PEM public key, JWK or JWKS, using the browser's Web Crypto API. The token is not sent anywhere.

Type or paste text and get every case style at once, each with a copy button. Word boundaries come from separators and from case changes, so XMLHttpRequest becomes xml_http_request and user_id2 becomes userId2. Accented and non-Latin letters such as é, ß and Cyrillic are handled. Multi-line input is converted line by line.

Paste CSV to get a JSON array of objects keyed by the header row, or an array of arrays. The delimiter is detected from the data; quoted fields may contain delimiters, line breaks and doubled quotes. Type inference turns 42, true and empty cells into numbers, booleans and null while leaving values like 007 as strings. In the other direction, an array of JSON objects becomes CSV with one column per key, and nested objects are flattened to dot paths such as user.address.city. For HTML or Markdown tables, use the Table Converter.

Combine multiple PDF files into one document with our free online PDF merger. Drag and drop to reorder files before merging. All processing happens in your browser - your files never leave your device. Perfect for combining contracts, reports, or any PDF documents.

Split a PDF or delete pages from it in your browser. Type the pages you want, such as 1,3,5-8, and save them as one PDF, remove them and keep the rest, or save each page as its own file. You can also split every N pages. The file is never uploaded.

Fix PDF orientation issues by rotating pages. Rotate all pages at once or rotate individual pages separately. Supports 90°, 180°, and 270° rotation. All processing happens in your browser.

Reduce PDF file size without uploading the file. Lossless mode rewrites the PDF structure and changes nothing you can see. Strong mode renders every page as a JPEG at the resolution you pick, which cuts the size of scanned and photo-heavy PDFs but makes text unselectable. Everything runs on your device.

Create PDF documents from images. Support for JPEG and PNG formats with customizable page size, orientation, and margins. Perfect for creating photo albums, document scans, or image collections as PDF.

Extract images from PDF documents. Convert each page to high-quality PNG, JPEG, or WebP format. Adjustable quality and scale settings. Download individual images or all at once.

Edit PDF document properties and metadata. Modify title, author, subject, keywords, creation date, and more. All changes are made locally in your browser without uploading files to any server.

Reorganize PDF pages with intuitive drag and drop interface. Move pages to new positions, reverse page order, or delete unwanted pages. All changes happen instantly in your browser.

Lay out PDF pages for printing in your browser. N-up puts several pages on each sheet in the order you choose, including right to left. Booklet arranges pages so that a double-sided printout folds into a stapled booklet, with blank pages added where needed. Cut and stack keeps the order after you cut the printed stack, and Poster enlarges a page across a grid of sheets with an overlap for gluing. A live preview shows where each page goes. The file is never uploaded.

Four percentage calculators on one page: X% of Y, X is what percent of Y, percent increase or decrease from A to B, and Y plus or minus X%. Results update as you type and show the formula used.

Enter a date of birth to get exact age in years, months, and days on today's date or any other date. Also shows days until the next birthday, the weekday of birth, total days lived, and Korean counting age and year age.

A date calculator with four parts: a D-day countdown, the difference between two dates in days, weeks, months, and business days, adding or subtracting days from a date, and anniversary dates such as the 100th or 1,000th day.