ByteMode workbench

Fast, private developer tools.

A focused catalog for formatting, converting, inspecting, and generating developer data locally in your browser.

Browser-side processingNo payload uploadsKeyboard-first navigation

JSON FormatterFormat and beautify JSON with configurable indentation and syntax highlighting.JSON ValidatorCheck JSON syntax and inspect its root structure without reformatting it.JSON MinifierValidate and compact JSON while comparing before and after size.JSON → YAMLConvert valid JSON into deterministic, readable YAML.YAML → JSONConvert one YAML document into formatted JSON with explicit compatibility checks.YAML Formatter / ValidatorValidate and normalize YAML while retaining document comments where supported.XML Formatter / ValidatorValidate and pretty-print XML without damaging mixed-content whitespace.XML → JSONConvert XML into a conventional attribute-and-text JSON mapping.JSON → XMLConvert the established structural JSON mapping into valid XML.CSV → JSONConvert header-based CSV records into an array of JSON objects.JSON → CSVConvert an array of flat JSON objects into correctly quoted CSV.JSON DiffCompare parsed JSON semantically with paths for structural and value changes.JSONPath TesterEvaluate a safe JSONPath Plus selector subset against local JSON.

Base64 Encoder / DecoderEncode and decode Unicode-safe Base64 and unpadded Base64URL.URL Encoder / DecoderPercent-encode or decode URI components and full URI text with explicit semantics.Hash GeneratorGenerate SHA-256, SHA-384, SHA-512, or legacy SHA-1 digests with Web Crypto.JWT DecoderDecode JWT headers, payloads, registered claims, and time-window status locally.JWT Signature VerifierVerify supported HMAC, RSA, RSA-PSS, and ECDSA JWT signatures with a local key.Certificate Decoder / InspectorInspect PEM X.509 certificates and validate supplied chain links locally.

Regex TesterTest JavaScript regular expressions with matches, ranges, and capture groups.Text DiffCompare two text values with accessible line or word-level additions and removals.SQL FormatterFormat common SQL dialects locally with indentation and keyword-case options.

UUID GeneratorGenerate cryptographically secure UUID v4 and time-ordered UUID v7 batches.Unix Timestamp ConverterConvert Unix seconds, milliseconds, and ISO 8601 into explicit UTC and local values.Cron Expression ParserExplain Unix and Spring Framework cron expressions and calculate upcoming executions locally.

chmod CalculatorConvert classic Unix octal permissions and symbolic rwx modes interactively.

CIDR CalculatorInspect IPv4 and IPv6 CIDR ranges, exact counts, masks, and host boundaries.IP / Subnet CalculatorCalculate a host subnet from an IP and mask, then plan bounded subnet splits.