TOOL CATEGORY
Developer & Data
Formatters, validators, encoders and data transformers.
CATEGORY WORKSPACES
Ready in this category.
HMAC Generator
Create keyed SHA-2 message authentication codes locally with Web Crypto.
HTML Entity Decoder
Decode named and numeric HTML entities to readable text locally.
HTML Entity Encoder
Encode HTML-sensitive characters with optional non-ASCII entity conversion.
HTML Formatter
Format or whitespace-minify bounded HTML locally for review.
HTTP Header Inspector
Parse HTTP headers and highlight common security and delivery controls.
IP Address Calculator
Calculate IPv4 or IPv6 CIDR ranges with explicit address and host facts.
JavaScript Formatter
Parse and format JavaScript locally without executing the source.
JSON Diff
Compare two JSON values and list bounded, reviewable path-level changes.
JSON Formatter
Format and validate one JSON value locally with readable two-space indentation.
JSON to CSV
Convert a JSON record array to RFC 4180-style CSV entirely in the browser.
JSON Validator
Validate JSON syntax and report its root type, depth, and structural counts.
JWT Decoder
Inspect readable JWT header and payload claims without claiming signature verification.