Developer Tools
JSON, Base64, URL encoding, and Markdown preview utilities.
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Base64 Encoder / Decoder
Encode or decode Base64 text — free unlimited use.
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JSON Formatter
Beautify, minify, and validate JSON with clear error messages.
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Markdown Preview
Write Markdown and preview formatted HTML side by side.
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URL Encoder / Decoder
Percent-encode or decode URLs and query strings safely.