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162 tools across 12 categories — all free, all in-browser.
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JSON
Parse, format, validate and convert JSON — the lingua franca of APIs.
JSON FormatterJSON to CSV
Aa
Text
Manipulate, transform, count and clean any text.
Case ConverterText Diff Checker
M↓
Markdown
Preview, convert and format Markdown for docs and READMEs.
Markdown Editor & PreviewREADME Generator
01
Encoding
Base64, URL, HTML, JWT, hash — encode and decode everything.
Base64 EncoderBase64 Decoder
⇄
Converters
CSV, XML, TOML — move between data formats losslessly.
cURL to fetch()
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Formatters
Pretty-print and minify HTML, CSS, JS, SQL, XML.
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Web
HTTP status codes, MIME types, headers, User-Agent parser.
HTTP Status Codes
◐
Color
Convert colors, build palettes, check contrast.
Color Picker
⏱
Time & Date
Timestamps, timezones, cron, durations.
Unix Timestamp Converter
▣
Images
Resize, compress, convert and inspect images locally.
/./
Regex
Test, build and explain regular expressions.
Regex Tester
⌘
Utilities
Diff, random, lorem ipsum — the kitchen sink.