A growing collection of simple, fast utilities.
UUID Generator
Generate random UUID v4 identifiers.
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Base64 Encoder / Decoder
Encode and decode Base64 data securely.
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Image ⇄ Base64
Encode images / preview base64.
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Unix Timestamp Converter
Convert to/from Unix timestamps with precision.
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CSV → JSON
Paste CSV, get structured JSON.
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YAML ⇄ JSON
Round-trip YAML and JSON.
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Password Generator
Strong, customizable passwords.
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Loan Calculator
Amortization, extra payments, payoff date.
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JSON Formatter
Pretty-print or minify JSON on the server (no uploads).
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Regex Tester (.NET)
Run patterns with System.Text.RegularExpressions.
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DNS / SSL Checker
Resolve A/AAAA and peek at TLS cert expiry.
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Image OCR
Extract text from images using Tesseract.
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URL Encode / Decode
Percent-encode and decode safely.
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CIDR Calculator
IPv4 network, mask, host ranges.
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Hash Generator
MD5 / SHA-1 / SHA-256 / SHA-512.
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JWT Decoder
Decode header & payload (no secrets needed).
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Color Converter
HEX ↔ RGB ↔ HSL.
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Text Case Converter
Upper/lower/title/snake/kebab/camel.
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Lines: Sort & Unique
Sort, dedupe, trim, count.
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Barcode and QR Code Maker
Generate barcodes in SVG: QR, Code128, EAN-13, UPC-A, PDF-417, more.
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Date Math
Add/subtract years, months, days…
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Cron
Cron Builder + Humanizer
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Convert
Unit Converter - length, weight, temperature, area...
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Geo IP Address Info
Geo IP Address Info – Geo & ASN
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