Developer converters
Developer converters on ConvertPass run in the browser. They are built for people who need to transform a document without pasting secrets into a stranger’s logs. Each tool states size limits, encoding, and what it will not do.
- developerJSON formatterPretty-print JSON locally with clear parse errors and a one-click copy.
- developerJSON minifierCollapse JSON to a single compact line without sending it anywhere.
- developerJSON validatorCheck whether text is valid JSON, with a useful error location.
- developerJSON repair helperRebuild almost-JSON into strict JSON, then read the warning before you trust it.
- developerJSON to YAMLTurn JSON into readable YAML without leaving your machine.
- developerYAML to JSONParse YAML into JSON without custom tags or server-side processing.
- developerJSON to CSVTurn a JSON array into CSV without dropping nested values on the floor.
- developerCSV to JSONParse real CSV into JSON without breaking on commas inside quotes.
- developerXML to JSONMap XML into JSON while keeping attributes and text nodes visible.
- developerJSON to XMLBuild XML from JSON when you already know the root element name.
- developerTOML to JSONTurn TOML config into JSON without uploading your secrets file.
- developerJSON to TOMLSerialise JSON config as TOML when the root is an object.
- developer.env to JSONParse a .env file into JSON without sending secrets to a server.
- developerJSON to .envWrite a .env file from a JSON object without guessing nested key names.
- developerBase64 encoder and decoderEncode or decode Base64 without uploading the payload.
- developerURL encoder and decoderApply or reverse percent-encoding without a round trip to a server.
- developerHTML entity encoder and decoderEscape or unescape HTML entities without rendering the input.
- developerJWT decoderRead a JWT’s JSON claims locally. This is not signature validation.
- developerUUID generatorCreate random UUID v4 values without a network call.
- developerHash generatorCompute common hashes locally. MD5 and SHA-1 are labelled as legacy.
- developerUNIX timestamp converterTranslate UNIX time and ISO-8601 without a timezone guessing game.
- developerCron expression explainerRead a cron expression in plain language before you schedule it.
- developerRegex testerTry a JavaScript regex locally with safe highlighting.
- developerMarkdown to HTMLTurn Markdown into HTML source without previewing untrusted markup.
- developerHTML to MarkdownFlatten HTML into Markdown without rendering the original markup.
- developerSQL formatterPretty-print SQL without sending the query to a database or a server.