JSON formatter and validator
Indent, minify or validate JSON syntax. Formatting reveals structure, but it cannot confirm whether field values or permissions are correct.
DEVELOPER TOOL COLLECTION
Inspect and convert small data values locally.
Use these tools for quick debugging, documentation examples and copied payloads. They are designed for lightweight tasks, not as a replacement for schema validation, source control or a secure development environment.
Base64 encoder and decoder
Represent UTF-8 text as Base64 or inspect an encoded value. Base64 is reversible representation, not encryption.
URL encoder and decoder
Encode query values and decode copied parameters. Usually the parameter value should be encoded rather than the complete URL.
Regular expression tester
Test a JavaScript pattern, flags and capture groups against sample text before adding it to code or an automation.
SHA-256 hash generator
Create a repeatable fingerprint for text. Hashing is one-way and differs from encoding; it does not prove who created a value.
UUID v4 generator
Generate identifiers for local prototypes, documentation, fixtures and test records.
Unix timestamp converter
Convert seconds, milliseconds and dates to ISO, UTC and device-local formats.
CSV column extractor
Keep selected fields from a copied export. For large or irregular files, use a dedicated CSV parser and validate the source encoding.
JWT decoder
Inspect a token header and payload locally. Decoding does not verify the signature or establish trust.
URL parser
Break a URL into its origin, host, path, query parameters and fragment using the browser URL standard.
Regex escape tool
Escape metacharacters before inserting literal text into a JavaScript-style regular expression.
Markdown to HTML and HTML to Markdown
Convert common headings, paragraphs, lists, links and emphasis for small content migrations.
HTML entity encoder and decoder
Encode markup-sensitive characters or inspect common named and numeric entity references.
Text to binary and binary to text
Inspect and decode strict eight-bit UTF-8 byte groups for learning and debugging.
Handle sample data carefully
Remove API keys, tokens, customer records and private identifiers before sharing a debugging example. The text redactor can help with common patterns, but manual review is still required.
Developer-tool questions
Can I use these tools with production secrets?
Avoid putting production secrets into any general-purpose web page. Use isolated, audited tooling and rotate a secret if it may have been exposed.
Why can dates differ by one day?
UTC and local time zones can place the same instant on different calendar dates.