Hiperion Toolkit
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Base64 Encode / Decode
Instantly encode plain text to Base64 or decode Base64 strings back to text. Live bidirectional conversion as you type.
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URL Encode / Decode
Encode plain text or URLs with encodeURIComponent, or decode percent-encoded strings back to readable text. All client-side.
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JSON Formatter
Paste raw or minified JSON to format it with indentation, or minify it for compactness. Validates syntax and highlights errors.
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Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text. Computed live in the browser using the Web Crypto API.
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JWT Decoder
Decode and inspect JSON Web Tokens — view the header, payload, and raw signature without sending your token to any server.
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Colour Picker
Pick any colour with a visual swatch and instantly convert between Hex, RGB, and HSL formats. Copy any value with one click.
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QR Code Generator
Generate QR codes from any text or URL instantly in your browser. Customise size and error correction, then download as PNG.
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Password Generator
Generate cryptographically secure passwords with configurable length and character sets. Includes a strength meter and batch generation.
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Timestamp Converter
Convert between Unix timestamps and human-readable dates in any direction. Live current timestamp and multi-timezone display.
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Regex Tester
Test regular expressions with live match highlighting. Supports all JavaScript flags and displays capture groups, match positions, and replace mode.
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UUID Generator
Generate one or many v4 UUIDs instantly using the browser's built-in crypto API. Copy individually or bulk-copy the entire list.
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Number Base Converter
Convert numbers between decimal, hexadecimal, binary, and octal in real time. Type in any field and all others update instantly.
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Text Case Converter
Instantly transform any text into camelCase, PascalCase, snake_case, kebab-case, UPPER, lower, Title Case, and Sentence case — all at once.
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Lorem Ipsum Generator
Generate placeholder text by word, sentence, or paragraph count. Classic lorem ipsum word bank baked in — no external requests.
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Cron Expression Explainer
Paste a cron expression and get a plain-English description plus the next 5 scheduled run times. Supports all standard 5-field syntax.
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Text Diff
Paste two blocks of text and see line-by-line differences highlighted in red and green. Useful for comparing configs, code, or any text.
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Markdown Preview
Write Markdown on the left and see a live rendered preview on the right. Inline parser with no CDN — headings, lists, code, links, and more.
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File / Image to Base64
Drag and drop any file to get its Base64 data URL and raw Base64 string. Image files show a live preview. Everything stays in your browser.