Developer & Data
Format, convert, encode and inspect data locally in your browser.
PWA Manifest Builder
build a valid web app manifest from names, start URL, display mode, theme colors and icon URLs.
Open tool →JSON Key Sorter
sort object keys recursively while preserving array order and JSON value types.
Open tool →JSON Lines Validator
validate one JSON value per line and report the exact line containing malformed data.
Open tool →Unicode Escape Converter
convert Unicode text to JavaScript-style escapes or decode safe escape sequences back to text.
Open tool →Content Security Policy Builder
build a restrictive Content-Security-Policy header from explicit trusted source lists.
Open tool →Security Headers Auditor
audit pasted HTTP response headers for practical browser security controls and risky omissions.
Open tool →JSON Pointer Resolver
resolve an RFC 6901 JSON Pointer against pasted JSON and return the exact selected value.
Open tool →JSON Flattener
flatten nested JSON objects and arrays into unambiguous escaped dot-path and value rows.
Open tool →OpenAPI Document Inspector
inspect a pasted OpenAPI JSON document for version, operations, tags and unresolved local references.
Open tool →HTML Table to CSV Converter
convert the first pasted HTML table into correctly escaped CSV while preserving cell text.
Open tool →Subresource Integrity Hash Generator
generate a browser-standard SHA integrity value for pasted stylesheet or script content.
Open tool →HMAC Generator
create a keyed SHA-256, SHA-384 or SHA-512 message authentication code with Web Crypto.
Open tool →Data URI Generator
encode text, SVG or JSON into a copyable percent-encoded or Base64 data URI.
Open tool →Cache-Control Header Builder
compose browser and shared-cache directives with explicit freshness and stale-response windows.
Open tool →HTTP Header Parser
parse a pasted HTTP status and header block into normalized names, duplicate values and JSON.
Open tool →MIME Type Lookup
look up common web and media content types from a filename extension or MIME value.
Open tool →URL Query Builder
merge encoded key-value rows into an absolute URL while preserving unrelated existing parameters.
Open tool →JSON to ENV Converter
flatten a JSON object into portable uppercase environment-variable assignments with safe quoting.
Open tool →ENV File Parser
validate dotenv-style assignments and convert their names and values into inspectable JSON locally.
Open tool →Cookie Header Parser
split a pasted Cookie request header into decoded names, values and duplicate warnings.
Open tool →Semantic Version Comparator
compare two SemVer versions including prerelease identifiers and ignored build metadata.
Open tool →JSON Merge Patch Tool
apply an RFC 7396-style merge patch to a JSON document and inspect the deterministic result.
Open tool →URL Path Normalizer
resolve dot segments and repeated slashes in an absolute URL or path without fetching the destination.
Open tool →JSON Array Deduplicator
remove exact duplicate JSON array values or retain the first object for each selected property.
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