Developer
Developer Tools
Free developer tools for formatting, encoding, validating, and debugging data.
Showing 24 of 47 tools.
URL Cleaner
Remove tracking parameters from one URL or a batch of URLs at once.
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DeveloperHTML Formatter
Pretty-print and minify HTML with indent, wrap, and quote controls.
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DeveloperMock Data Generator
Build custom rows of fake test data and export to JSON, CSV, SQL, or TS.
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DeveloperBase64 Encoder Decoder
Encode and decode Base64 with full Unicode.
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DeveloperJSON Formatter
Format, minify, and validate JSON in your browser.
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DeveloperRegex Tester
Live regex testing with highlights, capture groups, and replacement preview.
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DeveloperCookie Parser
Decode Set-Cookie or Cookie headers with attributes, expiry, and safety warnings.
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DeveloperHTML Minifier
Compress HTML safely: collapse whitespace, strip comments, drop attribute quotes, shrink boolean attributes.
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DeveloperJSON Tree Viewer
Collapsible JSON tree with search, JSONPath, type icons, and copy-by-node.
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DeveloperASCII Table
Searchable ASCII reference plus a two-way text-to-code converter.
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DeveloperBitwise Calculator
Bit-by-bit AND, OR, XOR, NOT, shift, and rotate over two operands at any width.
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DeveloperCache-Control Header Builder
Build and parse Cache-Control headers with directive flags, max-age presets, conflict checks, and ready-to-paste server snippets.
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DeveloperCSP Header Generator
Visual builder for the Content-Security-Policy HTTP header.
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DeveloperEmail Header Analyzer
Parse Received hops, SPF, DKIM, DMARC, and identity headers from raw email source.
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DeveloperHTML to JSX Converter
Paste HTML, get React JSX with class to className, camelCase attributes, and style objects.
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DeveloperJSON Minifier
Compact JSON with live byte savings and a JS literal copy.
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DeveloperKeyboard Event Tester
Live JavaScript KeyboardEvent inspector with key, code, keyCode, modifiers, and snippet generator.
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DeveloperLine Ending Converter
Convert between LF, CRLF, and CR line endings with detection, counts, and download.
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DeveloperOhm's Law Calculator
Compute volts, amps, ohms, and watts from any two known values with auto-scaled units.
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DeveloperPunycode Converter
Convert IDN domains between Unicode and ASCII Punycode with per-label breakdown.
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DeveloperResistor Color Code Calculator
Visual decoder and builder for 3, 4, 5, and 6 band resistor color codes.
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DeveloperSVG Optimizer
Clean and minify SVG markup with editor-metadata removal, number rounding, and default-attribute stripping.
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DeveloperUser Agent Parser
Decode any User-Agent into browser, engine, OS, device, and bot info.
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DeveloperBase32 Encoder / Decoder
Two-way Base32 with RFC 4648 Standard, Hex, and Crockford alphabets.
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