Category · 9 tools
Data & formats
Work with structured data end to end: prettify and validate JSON, convert between JSON, YAML, and TOML, diff two documents structurally, query with JSONPath or XPath, and generate type definitions or a SQL schema from a sample. Every tool runs entirely in your browser.
Code Formatter
Format and beautify JSON, YAML, TOML, XML, HTML, and CSS — with JSON/CSS minify and JSON schema validation.
works well with JSON to Types
Data Diff
Compare two JSON, YAML, or TOML documents by structure, not text: added, removed, and changed values with their paths. Key order and formatting are ignored. Runs in your browser.
works well with Code Formatter
HAR Viewer
Open a .har network export and explore its requests, sizes, status codes, and a timing waterfall — entirely in your browser. Nothing is uploaded.
works well with URL Inspector
JSON ↔ YAML ↔ TOML
Convert structured data between JSON, YAML, and TOML, live in your browser.
works well with JSON to Types
JSON to SQL
Infer a SQL CREATE TABLE from a JSON sample or a JSON Schema — column types, nullability, and a primary-key guess — for PostgreSQL, MySQL, or SQLite. Runs in your browser.
works well with JSON to Types
JSON to Types
Turn a JSON sample or a JSON Schema into TypeScript, Zod, Go structs, Python dataclasses, Kotlin data classes, or Java records/Lombok. Infers optional and nullable fields. Runs in your browser.
works well with JSON to SQL
JSONPath Tester
Query JSON live with JSONPath — filter, slice, and recurse, and see each matched value with its path, all in your browser.
works well with Code Formatter
Log & Trace Analyzer
Open a huge log file — JSON/NDJSON, logfmt, syslog, or Java/app-server text — and get instant time-range narrowing, faceting, a timeline, request tracing, and full-text search, entirely in your browser with nothing uploaded.
XPath Tester
Test XPath expressions against XML or HTML live — see matched nodes, their location paths, and string/number/boolean results, all in your browser.
works well with Code Formatter