Data Formatters & Schema Validators
Format, validate, and minify complex data payloads including JSON, XML, SQL, and GraphQL directly in your browser. Engineered with Monaco Editor and local parsers for zero-latency, private data engineering.
Category Tools (6)
Click any tool to launchJSON Formatter & Validator
Format, validate, and minify JSON with interactive syntax highlighting.
- #1Paste your unformatted JSON data into the editor.
- #2Validation runs as you type; click 'Format' to pretty-print it with 2 or 4 spaces.
JSON Schema Validator
Validate JSON data against draft-07 schemas with real-time error reporting.
- #1Paste your JSON data in the left editor.
- #2Paste your JSON Schema in the right editor.
XML Formatter
Pretty print and format XML documents.
- #1Paste raw XML into the editor.
- #2Click 'Format' to indent it (2 or 4 spaces) or 'Minify' to compact it; syntax is validated as you type.
SQL Formatter
Format SQL queries (PostgreSQL, MySQL, SQLite, standard SQL) with proper indentation.
- #1Paste your unformatted SQL query.
- #2Select your target SQL dialect.
GraphQL Formatter
Format GraphQL queries, mutations, and schema definitions.
- #1Paste your GraphQL query or schema.
- #2Click 'Format' to check the syntax and pretty-print it with the graphql-js printer.
CSS / SVG Minifier
Minify and compress CSS stylesheets and SVG graphics.
- #1Select the mode (CSS Minifier or SVG Minifier).
- #2Paste your raw code.
How Data Formatters & Validators Runs in Browser Memory
Modern engineering involves exchanging high-volume structured payloads between APIs, microservices, databases, and client applications. DevScratchpad Data Formatters & Validators provide an air-gapped, zero-latency workbench for validating schema contracts, pretty-printing minified production logs, and catching syntax regressions before deployment.
Runtime Security & Isolation
Every formatter runs strictly inside your local browser runtime. JSON formatting and schema validation utilize AJV (Another JSON Schema Validator) compiled to execute client-side against Draft-07 and 2020-12 specifications. SQL formatting utilizes localized AST tokenizers supporting Postgres, MySQL, and SQLite dialects. Monaco Editor virtualization enables smooth rendering and line-level diffing even with large multi-megabyte payloads, without transmitting a single byte to an external server or analytics pipeline.
Recommended Usage Workflows
- 01.Paste raw or minified payloads directly into the Monaco editor with Ctrl/Cmd + V.
- 02.Inspect instantaneous syntax errors with line-number indicators and inline diagnostic callouts.
- 03.Format or minify with one click, or automatically alphabetize nested object keys.
- 04.Validate JSON payloads against strict JSON Schemas to detect missing required properties or type mismatches.
Key Engineering Advantages
- Zero-latency parsing powered by client-side Web Workers and Monaco Editor.
- 100% private data isolation — no payloads ever leave your browser memory.
- Runs entirely in your browser, suited to sensitive enterprise environments.
- Instant copy, clean minification, and deep syntax highlighting.
Frequently Asked Questions (Formatters & Validators)
Is my sensitive JSON or SQL query sent to any server?
No. DevScratchpad formatters execute completely client-side in your local browser sandbox. Neither your raw data, schema definitions, nor formatted outputs are sent over the network.
Can I format large multi-megabyte files without browser freezing?
Yes. The formatters use the Monaco Editor engine (the same code editor powering VS Code) with virtualized DOM rendering and background parsing to comfortably process multi-megabyte payloads.
Which JSON Schema drafts are supported in the validator?
The JSON Schema Validator supports Draft-07, Draft-2019-09, and Draft-2020-12 schemas powered by AJV with full format validation.
Does the SQL formatter support specific database dialects?
Yes, our SQL formatter handles standard ANSI SQL, PostgreSQL, MySQL, SQLite, and MariaDB formatting rules including uppercase keywords and indentation.