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Base64 Decoder
Decode base64 back to readable text, with clear errors for invalid or binary payloads.
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Encoding, formatting, validation, and small everyday utilities.
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Base64 Encoder
Encode any text — including emoji and non-Latin scripts — to base64, entirely in your browser.
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JSON Formatter
Pretty-print or minify any JSON document instantly, with clear line/column error reporting.
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JSON Validator
Validate any JSON document and get the exact line and column of the first error.
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JSON Viewer
Explore any JSON document as a collapsible tree, with keys, types, and sizes at a glance.
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Markdown Editor
Write Markdown with a live preview, then copy the rendered HTML — all in your browser.
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QR Code Generator
Generate real, scannable QR codes for text, URLs, WiFi, and contacts — entirely in your browser.
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Regex Tester
Test regular expressions live: matches with positions, capture groups, and flag validation.
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SQL Formatter
Format SQL for readability — uppercase keywords, one clause per line — right in your browser.
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Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates in both directions, in your browser.
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URL Decoder
Decode percent-encoded URLs and query strings back to readable text, in your browser.
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URL Encoder
Percent-encode text for URLs — as a query component or a full URI — right in your browser.
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UUID Generator
Generate RFC 4122 version-4 UUIDs — with or without hyphens, upper or lowercase.
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