UD5 Toolkit
Audio Converter - Online Convert WAV MP3 OGG Locally
Convert audio files between popular formats like WAV, MP3, and OGG directly in the browser. No upload, fast encoding using WebAudio and ffmpeg wasm.
Converters - Format & Unit Conversion
99+ toolsImage to SVG Path - Online Trace Bitmap to Vector
Convert a simple black and white image into an SVG path using edge detection. Extract vector outlines. Local canvas processing.
Gray Code Converter - Online Binary to Reflected Code
Translate between binary and Gray code (reflected binary code). See the bit changes. Useful for digital logic.
Decimal to IEEE 754 Converter - Online Float Representation
Convert a decimal number to 32-bit single precision IEEE 754 format. See sign, exponent, mantissa bits. Developer tool.
Hijri to Gregorian Date Converter - Online Islamic Calendar
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.
Webpage to PDF - Online Print & Save as Document
Enter a URL and instantly generate a PDF version using the browser's print-to-pdf engine. Private, no upload.
JSON to CSV Converter - Online Free Data Translator
Easily convert JSON data arrays into CSV format for Excel or database import. Handles nested structures with flattening options. All conversions happen locally, no data uploaded.
Number Base Converter - Online Binary Octal Decimal Hex
Convert numbers between binary, octal, decimal, and hexadecimal bases. See real-time conversion as you type. Clean and simple programmer utility.
Roman Numeral Date Converter - Online MMXXVI Style
Convert any date into Roman numerals (day‑month‑year) for tattoos or special occasions. Clean and local.
Video to GIF Converter - Online Create Animated Images
Trim a video clip and convert it into an animated GIF. Adjust frame rate and size. Processing stays on your computer for privacy.
HTML to Markdown Converter - Online Clean Content Extractor
Strip HTML tags and convert web content to plain Markdown. Preserve headings, lists, and links. Perfect for content migration. All processing in browser.
Unix Timestamp Converter - Online Epoch & DateTime Tool
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Ideal for developers debugging time-related code.
PNG to ICO Converter - Online Favicon Maker
Convert any PNG image into a proper .ico favicon file with multiple sizes embedded. For website icons. Local.
Color to CIELAB Converter - Online Perceptual Space
Convert hex or RGB to CIELAB L*a*b* values. Understand perceptual lightness and color opponents. Local math.
Text to ISO Date Converter - Online Parse Any Date String
Paste a human‑readable date (like 'next Friday' or 'March 5, 2023') and convert it to ISO 8601 format. Quick and tolerant.
CSV to Wiki Table Converter - Online MediaWiki Markup
Paste CSV data and instantly get a formatted MediaWiki table code. Ideal for Wikipedia editors and internal wikis.
Julian Date Converter - Online Calendar to JD
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Date to Unix Epoch Converter - Online Human to Timestamp
Convert any human‑readable date to a Unix timestamp in seconds or milliseconds. Also shows ISO 8601. Clean interface.
PDF Text Extractor - Online Copy Text from PDF Locally
Extract selectable text from a PDF using the browser's built‑in PDF rendering. Copy or download as TXT. No upload, fully private.
SVG to PNG Converter - Online Vector to Raster Image
Convert scalable SVG images to standard PNG files with a custom resolution. Works offline; just paste SVG code or upload an .svg file. Private and reliable.
Hijri to Gregorian Converter – Online Umm al‑Qura Estimate
Convert dates between Hijri and Gregorian using the Umm al‑Qura algorithm. Approximate local moon sighting may vary.
Arabic to Kanji Number Converter - Online 一 二 三
Convert standard Arabic numbers into formal Japanese/Kanji numerals (e.g., 123 → 百二十三). Also supports large numbers.
Images to PDF Merger - Online Combine JPG/PNG into One
Select multiple images, arrange their order, and merge them into a single PDF document. Works offline in your browser.
HTML Table to Markdown Converter - Online Quick Transform
Paste an HTML `<table>` snippet and instantly get a clean Markdown table. Supports colspan and alignment hints. Local.
Cooking Measurement Converter - Online Cups, Grams & Ounces
Convert between common cooking units: cups → grams, teaspoons → ml, Fahrenheit → Celsius. Essential baking tool.
Two's Complement Converter - Online Binary Negative Encoder
Convert decimal negative and positive numbers to 8/16/32-bit two's complement binary. Essential for low-level programming.
JSON to XML Converter - Online Data Interchange Tool
Seamlessly convert JSON objects into valid XML documents. Control root element naming and attribute formatting. Entirely local, keeping your data safe.
RGB to CMYK Converter - Online Print Color Translator
Convert screen RGB colors to print-ready CMYK values. Understand color shifts before printing. Ideal for graphic designers preparing artwork for press.
RGB to HEX Converter - Online Color Translator
Convert RGB and RGBA color values to their HEX or HEX+alpha representation. Live preview and copy CSS color strings instantly.
JSON List to CSV - Online Flat Array Converter
Convert a JSON array of strings or numbers into a single‑column CSV. Quick data dump. Local.
Static Currency Converter - Online Fixed Rates Table
Convert currencies using a built‑in table of approximate fixed rates. Useful for quick estimates without live data. Local.
Color Temperature to RGB - Online Kelvin to Hex Converter
Enter a Kelvin value (1000‑40000) and see the approximate white‑balance color. Photography and lighting reference.
Subtitle File Converter - Online SRT ↔ VTT & Timestamp Shift
Convert subtitle files between SRT and WebVTT formats. Also shift all timestamps forward/backward. Works locally.
Currency Converter - Online Exchange Rate (Manual Update)
Convert between currencies using manually updated or default rates. Great for estimation when offline. Local settings.
JSON to YAML Converter - Online Data Serialization Tool
Convert JSON data structures to clean, human-readable YAML. Indentation and formatting preserved. All processing done locally for your privacy.
Color to OKLCH Converter - Online Perceptually Uniform
Convert hex, RGB, or HSL into the modern OKLCH color space. See the preview and copy CSS oklch() value. Local.
Images to PDF Merging - Online Combine & Order
Combine JPGs and PNGs into a single PDF. Drag to reorder pages. All processing happens locally; your files never leave your device.
Number to Words Converter - Online Write Out Currency
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
PX to VW/VH Converter - Online Responsive Unit Calculator
Convert pixel values to viewport‑relative units (vw, vh, vmin, vmax) based on a selected breakpoint. Precise responsive design.
AM/PM to 24‑Hour Time Converter - Online Military Time
Instantly convert 12‑hour AM/PM time to 24‑hour format and vice versa. Simple and essential for travelers.
Text to NATO Phonetic Alphabet - Online Converter
Convert any phrase into the NATO phonetic alphabet (Alpha, Bravo, Charlie…). Copy or hear pronunciation. Useful for call centers.
Decimal to Hex Converter - Online Number Base Translator
Convert decimal numbers to their hexadecimal equivalents. Support for large integers. Fast and handy for low-level programming reference.
CSV to JSON Converter - Online Spreadsheet Data Parser
Parse CSV files into structured JSON arrays or objects. Customize delimiters and headers. Processed completely in your browser to protect sensitive data.
Image Format Converter - Online PNG to JPEG & More
Convert images between popular formats like PNG, JPEG, WEBP, and BMP. No quality loss on conversion when using lossless formats. Private and fast.
PNG to JPG Converter - Online Add White Background
Convert transparent PNGs to solid JPGs by filling the background with white or any color. Fast and local.
HTML Fragment to PDF - Online Print Custom Section
Write or paste an HTML snippet and generate a PDF using the browser's print engine. Customize page size and margins.
Data URL to File Downloader - Online Decode & Save
Paste a data: URL and instantly download the file it represents. Supports all MIME types. Simple extraction.
Color Inversion Calculator - Online Exact Opposite Hue
Get the exact RGB inversion (negative) of any color. Useful for dark mode theming and high‑contrast accessibility checks.
YAML to JSON Converter - Online Config Translator
Translate YAML configuration files into JSON format instantly. Validate syntax during conversion. Perfect for DevOps and configuration management. Secure client-side operation.
Time Zone Converter - Online World Clock & Meeting Planner
Compare time across multiple time zones and find a suitable meeting time. Convert a specific time to various cities. Browser-based and always accurate.
Roman Numerals Converter - Online Decimal to Roman Tool
Convert numbers to Roman numerals and decode Roman numerals back to numbers. Supports up to large values. A fun educational tool running entirely in your browser.
Nautical Mile & Knot Converter – Online Marine Units Tool
Convert between nautical miles, statute miles, kilometers, and knots to mph/kmh. Essential for navigation.
HTML to Pug Converter - Online Indented Template Syntax
Convert standard HTML into Pug (formerly Jade) syntax. Clean, indented output. For Node.js templating. Client‑side.
PX to VW/VH/VMAX/VMIN Converter - Online Responsive Calculator
Convert pixel values to viewport‑relative units (vw, vh, vmax, vmin) for a specified breakpoint. Includes DVH and SVH. Essential for fluid layouts.
HTML to Text with Line Breaks - Online Just the Words
Convert HTML to plain text while preserving paragraph breaks. Remove images, links, and scripts. Quick data extraction.
Markdown to Rich Text - Online Copy for Google Docs
Convert Markdown to styled HTML that retains formatting when pasted into Google Docs or Word. Headings, bold, lists. Client‑side.
CSV to HTML Table - Online Generate Responsive Code
Paste CSV and get a beautiful HTML table with sortable headers (optional). Copy the full HTML/CSS snippet. Local.
Data Table to Markdown - Online Paste & Format
Paste tab‑separated or CSV data and instantly get a beautifully aligned Markdown table. Essential for documentation.
Video to Animated WebP - Online Free Converter
Select a short video and convert it to an animated WebP image for faster web loading. Adjust quality and size. Local only.
Hex to Decimal Converter - Online Base 16 to 10 Tool
Translate hexadecimal numbers to decimal integers. Instantly see the magnitude. A simple, private utility for developers and mathematicians.