{"name":"Developer Tools Online","url":"https://validatethis.org","description":"Free online developer tools: JSON, HTML, CSV, XML, YAML validators, API response checker, robots.txt tester, Schema.org validator. API-ready.","llmsTxt":"https://validatethis.org/llms.txt","tools":[{"name":"Data Format Analyzer","url":"https://validatethis.org/data-format-analyzer","description":"Paste JSON to validate syntax, structure, size. Get validation score and fix recommendations."},{"name":"Data Quality Analyzer","url":"https://validatethis.org/data-quality-analyzer","description":"Paste JSON to check missing values, duplicate rows, and data quality. Get a quality score."},{"name":"JSON Validator","url":"https://validatethis.org/json-validator-online","description":"Validate JSON syntax with precise error locations. Check for trailing commas, missing quotes, and malformed structures."},{"name":"HTML Validator","url":"https://validatethis.org/html-validator-online","description":"Check HTML markup for syntax errors, unclosed tags, invalid nesting, and W3C compliance issues."},{"name":"CSV Validator","url":"https://validatethis.org/csv-validator","description":"Validate CSV structure, RFC 4180 quoting, and consistent column count per row."},{"name":"API Response Checker","url":"https://validatethis.org/api-response-checker","description":"Validate API response body as JSON. Paste raw HTTP response or JSON only; get line/column errors."},{"name":"SOAP Response Validator","url":"https://validatethis.org/soap-response-validator","description":"Validate SOAP response: well-formed XML and valid Envelope with Body or Fault. Paste raw HTTP or SOAP XML."},{"name":"robots.txt Tester","url":"https://validatethis.org/robots-txt-tester","description":"Test robots.txt rules against URLs to verify crawler access permissions and sitemap declarations."},{"name":"Schema.org Validator","url":"https://validatethis.org/schema-org-validator","description":"Validate JSON-LD, Microdata, and RDFa structured data for SEO and rich search results."},{"name":"XML Validator","url":"https://validatethis.org/xml-validator","description":"Validate well-formed XML. Check unclosed tags, invalid attributes, syntax. Line and column errors."},{"name":"YAML Validator","url":"https://validatethis.org/yaml-validator","description":"Validate YAML syntax. Check indentation, structure. Get line and column errors."},{"name":"XSD Schema Checker","url":"https://validatethis.org/xsd-schema-checker","description":"Validate XML against an XSD schema. Paste XSD and XML; get line and column errors when the document does not conform."},{"name":"Config Structure Checker","url":"https://validatethis.org/config-structure-checker","description":"Validate JSON or YAML config: syntax and optional required top-level keys. Paste config, list required keys."},{"name":"CI Config Linter","url":"https://validatethis.org/ci-config-linter","description":"Lint CI config YAML: GitHub Actions and GitLab CI. Validate syntax and structure (on, jobs, steps, runs-on, script)."},{"name":"Regex Tester","url":"https://validatethis.org/regex-tester","description":"Test regular expressions against text. See matches, capture groups, and flags (g, i, m, s)."},{"name":"Pattern Validator","url":"https://validatethis.org/pattern-validator","description":"Validate glob patterns and test paths. See which paths match (e.g. src/**/*.ts, *.json)."},{"name":"Match Debugger","url":"https://validatethis.org/match-debugger","description":"Debug regex matches: see start index, end index, length, and matched text for each match."},{"name":"Env File Validator","url":"https://validatethis.org/env-file-validator","description":"Validate .env file syntax: KEY=value, comments (#), duplicate keys, invalid key names."},{"name":".env Syntax Checker","url":"https://validatethis.org/env-syntax-checker","description":"Check .env file line syntax: KEY=value, comments (#), invalid key names. Same API as Env File Validator."},{"name":"Secrets Scanner","url":"https://validatethis.org/secrets-scanner","description":"Scan text for potential secrets: passwords, API keys, tokens. Get line numbers and pattern names."},{"name":"Log File Analyzer","url":"https://validatethis.org/log-file-analyzer","description":"Analyze log files: count lines by level (ERROR, WARN, INFO, DEBUG, TRACE) and see sample lines."},{"name":"Error Pattern Checker","url":"https://validatethis.org/error-pattern-checker","description":"Find log lines that match a pattern: plain text or regex. Get matching lines with line numbers."},{"name":"Log Format Validator","url":"https://validatethis.org/log-format-validator","description":"Validate that each log line matches an expected format (regex). Paste logs, enter pattern, get invalid lines."},{"name":"Base64 Encoder / Decoder","url":"https://validatethis.org/base64-encoder-decoder","description":"Encode text to Base64 and decode Base64 to text. Paste input, choose mode, get the result."},{"name":"Checksum Checker","url":"https://validatethis.org/checksum-checker","description":"Compute MD5, SHA-1, or SHA-256 checksum of text. Optionally verify against an expected hash."},{"name":"Hash Validator","url":"https://validatethis.org/hash-validator","description":"Validate that a string is a valid hash format (hex length for MD5, SHA-1, SHA-256, etc.). Auto-detect or specify algorithm."},{"name":"Date-Time Format Validator","url":"https://validatethis.org/datetime-format-validator","description":"Validate date-time strings (ISO 8601, RFC 2822). Get parsed result in ISO format."},{"name":"ISO Compliance Checker","url":"https://validatethis.org/iso-compliance-checker","description":"Check if a date-time string is strictly ISO 8601 compliant. Get violations and parsed result."},{"name":"Timestamp Converter","url":"https://validatethis.org/timestamp-converter","description":"Convert Unix timestamp (seconds or ms) to ISO date-time and vice versa."},{"name":"UUID Generator & Validator","url":"https://validatethis.org/uuid-generator-validator","description":"Generate UUID v4 and validate UUID format (version and variant)."},{"name":"ID Collision Checker","url":"https://validatethis.org/id-collision-checker","description":"Paste a list of IDs (one per line); find duplicates and line numbers."},{"name":"Format Checker","url":"https://validatethis.org/format-checker","description":"Validate a string against named formats: email, URL, IPv4, UUID, semver, etc."},{"name":"Webhook Payload Validator","url":"https://validatethis.org/webhook-payload-validator","description":"Validate webhook payload: valid JSON and optional required top-level keys."},{"name":"Signature Checker","url":"https://validatethis.org/signature-checker","description":"Verify HMAC signature (SHA-256 or SHA-1) of a payload against a secret."},{"name":"Replay Tester","url":"https://validatethis.org/replay-tester","description":"Check if a timestamp is within an allowed time window (replay protection)."}]}