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Developer Tools

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Showing 190–198 of 198 articles

How to Generate a Mock JSON API Response

💻 Developer Tools

How to Generate a Mock JSON API Response

Build a mock JSON API response — array, object, or paginated — from a simple field list with typed fake values, right in your browser, no backend needed.

 How to Generate a Random SVG Blob Shape

🫧 Developer Tools

How to Generate a Random SVG Blob Shape

Generate a random, smooth organic blob shape as SVG using a Catmull-Rom spline, with adjustable points and randomness, right in your browser, ready for design.

 How to Look Up ASCII Codes Fast

💻 Developer Tools

How to Look Up ASCII Codes Fast

Browse the full 0-127 ASCII table with decimal, hex, and octal codes, searchable by character or code, right in your browser, without a static reference image.

 How to Preview How Your Link Looks When Shared

💻 Developer Tools

How to Preview How Your Link Looks When Shared

Preview an Open Graph link card as it would appear on Facebook, X, or Discord, with per-platform character limits and generated meta tags, right in your browser.

 How to Break Down a URL Into Its Parts

💻 Developer Tools

How to Break Down a URL Into Its Parts

Parse any URL into protocol, host, port, path, query string, and hash instantly, with percent-encoded values decoded automatically in your browser.

 How to Catch YAML Syntax Errors Before They Break Your Build

💻 Developer Tools

How to Catch YAML Syntax Errors Before They Break Your Build

Validate YAML syntax with a live JSON preview and exact line and column error locations, before a bad indent breaks your CI pipeline or config.

 How to Clean Up Minified or Messy CSS Fast

💻 Developer Tools

How to Clean Up Minified or Messy CSS Fast

Reformat minified or messy CSS into clean, consistently indented stylesheets that preserve comments, live as you type, without installing a build tool.

 How to Generate an HMAC Signature Online

💻 Developer Tools

How to Generate an HMAC Signature Online

Compute HMAC-SHA1, SHA256, SHA384, or SHA512 signatures from a message and secret key using the Web Crypto API, output in hex or Base64, in your browser.

 How to Generate SEO and Social Meta Tags Fast

💻 Developer Tools

How to Generate SEO and Social Meta Tags Fast

Generate title, description, robots, canonical, Open Graph, and Twitter Card meta tags ready to paste into your page head, without memorizing the syntax.