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WEB DEVELOPMENT

Free Tools for Web Designers and Developers

Check, convert, and generate code or URL data without installing software or creating an account.

Workflow

1
Choose the code or data task
2
Run the check, conversion, or generator
3
Copy the result and return to your work

Tools for this workflow

Free tools for HTML, SQL, Markdown, JSON, XML, URLs, Base64, formatting, conversion, and other web development tasks.

JSON formatter / validatorFormat, minify and validate JSON.XML formatterFormat and validate XML in the browser.Base64 encoder / decoderEncode or decode Unicode text as Base64.URL encoder / decoderPercent-encode or decode URL text.URL query parserParse URL query parameters into a readable list.URL slug generatorTurn a title or phrase into a URL-friendly slug.SHA hash generatorGenerate SHA-256 / 384 / 512 hashes locally in your browser.JWT decoderDecode JWT header and payload locally. Signature is not verified.UUID generatorGenerate UUID v4 values in your browser.CSS clamp() generatorGenerate a fluid CSS clamp() expression from viewport and size ranges.HEX / RGB / HSL converterConvert HEX or RGB colors to HEX, RGB and HSL.Text case converterConvert text to upper, lower, title, snake, kebab or camel case.Aspect ratio calculatorSimplify an aspect ratio and calculate matching dimensions.File transfer time calculatorEstimate theoretical transfer time from file size and link speed.Edit HTML and Preview the Browser ResultEdit HTML and preview the rendered browser result.Format Minified HTML with Lines and IndentationAdd line breaks and indentation to compressed HTML.Format One-line SQL with Readable Line BreaksFormat one-line SQL into a more readable layout.Minify CSS, JavaScript, or HTMLCreate a smaller copy of CSS, JavaScript, or HTML.Preview How Markdown Will RenderEnter Markdown and check how it will render.Encode or Decode HTML EntitiesEncode special HTML characters or restore entity references.Inspect Unicode Code Points for TextInspect Unicode code points for text, symbols, and emoji.Convert Text, Binary, Decimal Bytes, and HexConvert between text and binary, decimal, or hexadecimal bytes.

Before you use these tools

Do not enter production secrets, private keys, or sensitive tokens.