The Heuheu
A private desk gremlin’s collection of essential utilities. No tracking, no accounts, and no server-side processing. All data stays in your browser.
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WebP Alchemist
Client-side PNG/JPG to WebP image conversion with quality control.
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Aspect Ratio
Calculate dimensions for resizing images or elements while maintaining aspect ratio.
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SVG Placeholder
Generate customizable, lightweight SVG placeholder images for mockups.
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Color Alchemist
Convert between HEX, RGB, and HSL color models for CSS and other applications.
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JSON Alchemist
Parse, validate, and pretty-print JSON data structures for debugging and development.
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Base64 Alchemist
Encode and decode strings or files to/from Base64 for data transfer.
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Unix Timestamp
Convert Unix epoch timestamps to and from human-readable UTC/local dates.
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HTML Entities
Encode or decode special characters to their corresponding HTML entities.
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QR Forge
Generate static, high-redundancy QR codes from any text or URL.
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Case Transformer
Transform strings between camelCase, PascalCase, snake_case, and kebab-case.
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List Scrubber
Perform set operations like deduplication, sorting, and filtering on text lists.
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Whitespace Scrubber
Remove or identify hidden whitespace characters and trim strings.
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Lorem Ipsum
Generate paragraphs, sentences, or words of placeholder text for UI mockups.
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Unit Alchemist
Convert between various metric and imperial units of measurement.
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Password Forge
Generate strong, cryptographically-random passwords with customizable rules.