Developer Tools
Use quick browser-based developer tools that run client-side with no signup, including a JSON formatter and validator and a URL, Base64, and HTML coder.
Overview
The developer tools cover quick, repeatable transformations that you would otherwise reach for a one-off snippet or terminal command to handle: JSON formatting and validation, and URL, Base64, URL-safe Base64, and HTML-entity encoding.
When to use each developer tool
Use the JSON formatter to beautify or minify a payload, validate that an API response is syntactically valid JSON, or surface the exact line and column of a parse error so you can fix malformed input. Both beautify and minify modes use native JSON parsing, so the output is a round-trip of your input, not a regex-based transformation.
Use the encoder/decoder when you need to percent-encode a URL parameter, decode a URL-safe Base64 token, or convert text to and from numeric HTML entities. Each mode is explicit about whether it acts on a query value, a path segment, or full-text byte content, so you can pick the encoding that matches the surface you are working with.
Picking the right encoding
URL encoding is for values you embed inside a URL. That covers query parameters, path segments, and fragment identifiers. It percent-escapes characters that have special meaning to the URL grammar. It is not the right transformation for binary data or for hiding text content, where Base64 or URL-safe Base64 is the closer fit.
Base64 turns arbitrary bytes into an ASCII-safe representation. URL-safe Base64 swaps two characters so the output can travel inside a URL or filename without further escaping. HTML entity encoding is for embedding text inside HTML where characters like the less-than sign or ampersand would otherwise be parsed as markup. Mixing these up is a common cause of mysterious decoding failures. The format you encoded with has to match the format you decode with.
Local-only processing
Both developer tools run entirely in your browser. No JSON payload, encoded token, or pasted text is uploaded to a Cleartali server or shared with analytics or advertising providers. That said, Base64 and similar encodings are reversible. They are not encryption. Do not paste live credentials, customer data, or secrets into any tool to "obscure" them, because anyone with the encoded string can reverse it without a key. For real secret protection use a proper credential manager or transport-level encryption, and treat developer-tool output as a transformation of public input, not as a confidential channel.