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Generate v4 UUIDs (GUIDs) — single or batch, copy with one click.

Create campaign tracking URLs with UTM source, medium, campaign, term, and content parameters. Works fully in the browser.

Create beautiful countdowns for any date or event. See days, hours, minutes, seconds ticking down in real-time with celebration effect.

Calculate Return on Investment (ROI) for your products. See payback period, annualized return, and profit projections for e-commerce.

Convert multiple images to a single PDF — entirely free, no uploads.

Create domain name ideas from keywords, prefixes, suffixes, and extensions with clean copy-ready suggestions.

Calculate missing width, height, simplified ratios, CSS aspect-ratio values, and responsive embed sizes.

Generate interview questions for any role, including behavioral, technical, screening, and culture-fit prompts.

Paste any screenshot or image, crop it, and download as a clean PDF document. Perfect for sharing screenshots professionally.

Convert between 30+ world currencies with live exchange rates. Swap currencies instantly and see real-time conversions.

Extract YouTube video IDs from URLs and generate thumbnail links in multiple sizes with live preview.

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Size your Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM). Essential for pitch decks, strategic planning, and investor conversations.