HandyGrid collection
Developer Tools
Private formatters, validators, converters and generators that run locally in your browser.
Browse Developer Tools
JSON FormatterFormat and optionally sort JSON keys locally.→JSON ValidatorCheck JSON syntax and report its root type and structure.→JSON MinifierRemove unnecessary JSON whitespace without changing data.→JSON Tree ViewerExplore JSON as an expandable local tree.→JSON to YAMLConvert JSON objects and arrays to readable YAML locally.→YAML to JSONConvert safe, data-only YAML into formatted JSON.→YAML Formatter and ValidatorValidate and normalize common data-only YAML documents.→XML Formatter and ValidatorCheck well-formed XML and format its element structure locally.→SQL FormatterFormat SQL joins, subqueries, CASE expressions and comments without executing them.→Base64 Encoder and DecoderEncode UTF-8 text to Base64 or decode Base64 locally.→JWT DecoderDecode JWT header and payload without verifying or uploading the token.→UUID GeneratorGenerate cryptographically random UUID v4 values in the browser.→Unix Timestamp ConverterConvert Unix seconds or milliseconds to ISO date and local time.→Regex TesterTest a JavaScript regular expression against local text with bounded input.→HEX, RGB and CMYK Colour ConverterTranslate HEX and RGB colour codes with a live swatch and a mathematical CMYK estimate.→Image Palette ExtractorUpload a local PNG, JPEG or WebP image and extract its five dominant colours in the browser.→Text DiffCompare old and new text line by line entirely in the browser.→SQL CREATE TABLE and Dummy Data GeneratorDesign a table with up to 15 columns and generate SQL Server or Oracle CREATE TABLE scripts with up to 1,000 rows of customizable dummy data.→