Batch Text Case Converter - Online File/List Processor
Paste a list of words or lines and convert all to UPPERCASE or lowercase at once. Also supports title case.
UD5 Toolkit
Convert US, UK, EU, and CM sizes instantly for running shoes. Find your perfect fit.
| US Men | US Women | UK | EU | CM (Foot Length) |
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Paste a list of words or lines and convert all to UPPERCASE or lowercase at once. Also supports title case.
Generate a printable pace band for ultra distances with mile/km splits and cumulative time. Adjust for terrain.
Transform regular text into the mocking SpongeBob‑style alternating case. Copy and paste for hilarious effect.
Convert between emoji characters and their shortcode representations (e.g., :tada: to 🎉). Supports Slack and GitHub styles.
Enter an emoji or browse to see which Unicode version introduced it and whether older OS versions might fail.
See how your browser renders emojis from different Unicode versions. Detect gaps in your system's emoji font support.
Pick a color palette and the tool shows sample images that match it. Great for moodboard and brand inspiration. Static dataset.
Select a heading font and get recommended body font pairings. Live preview with sample text. Copy the CSS import links.
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Paste your email subject and body. The tool highlights common spam trigger words and gives a risk score. Improve inbox placement.
Paste HTML code and extract all comments or remove them completely. See a list of comments found. Clean your markup.
Load an image and see the exact events fired (load, error, abort). Monitor progress. Dev helper.
View every standard emoji in a searchable grid. Hover to see a larger preview. Click to copy. Updated with Unicode 16.
Enter a URL and get a list of all images that fail to load (404, CORS). A simple asset audit tool. Runs in your browser.
Drop files onto a zone and see a preview with name, size, and type. Copy the JavaScript pattern for your site.
See how to implement file upload progress using both fetch and XHR. Real‑time bar and code snippets for your project.
Quiz yourself on element symbols, names, and atomic numbers. Multiple modes: element to symbol, symbol to element. Score tracking. Great for chemistry students.
Start a fetch request and cancel it with AbortController. See how to implement request cancellation. Interactive.
Select multiple images, arrange their order, and merge them into a single PDF document. Works offline in your browser.
Paste an HTML `<table>` snippet and instantly get a clean Markdown table. Supports colspan and alignment hints. Local.
Enter a recent race time and predict times for other distances. Also get lap splits for different intervals.
Enter a Kelvin value (1000‑40000) and see the approximate white‑balance color. Photography and lighting reference.
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Convert any human‑readable date to a Unix timestamp in seconds or milliseconds. Also shows ISO 8601. Clean interface.
Convert between common cooking units: cups → grams, teaspoons → ml, Fahrenheit → Celsius. Essential baking tool.
Translate between binary and Gray code (reflected binary code). See the bit changes. Useful for digital logic.
Encode decimal integers into signed magnitude binary representation and decode back. Learn computer arithmetic.
Convert a decimal number to 32-bit single precision IEEE 754 format. See sign, exponent, mantissa bits. Developer tool.