Browser labs for developer data.

VH Data & API Contracts Avro / Protobuf Schema Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open CSV Data & API Contracts CSV Locale Repair & Normalizer Normalize locale-sensitive CSV payloads and expose row, delimiter, and decimal evidence. Open CSV Data & API Contracts CSV Profiler Normalize locale-sensitive CSV payloads and expose row, delimiter, and decimal evidence. Open CSV Data & API Contracts CSV Schema Inferencer Normalize locale-sensitive CSV payloads and expose row, delimiter, and decimal evidence. Open VH Data & API Contracts Diff / Patch Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts GraphQL Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts HTTP Request / Response Diff Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts Idempotency Collision Lab Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts Idempotency Key Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open {} Data & API Contracts JSON Formatter Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts JSON Merge Patch Builder Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts JSON Patch Builder Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts JSON Schema Workbench Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts JSON Validator Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts JSONPath / JMESPath Workbench Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open {} Data & API Contracts NDJSON / Log Parser Workbench Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open VH Data & API Contracts OpenAPI / Swagger Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts OpenAPI Breaking Change Diff Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open .* Data & API Contracts Regex Explainer & Generator Test regex patterns, named groups, replacement previews, and match diagnostics. Open .* Data & API Contracts Regex Tester Test regex patterns, named groups, replacement previews, and match diagnostics. Open VH Data & API Contracts REST Error Contract Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts SQL Formatter & Query Risk Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open {} Data & API Contracts Structured Data / JSON-LD Validator Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open VH Data & API Contracts Text Diff Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts WebSocket / SSE Message Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts XML / XPath Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts XML Sitemap Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Data & API Contracts YAML / TOML Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open

VH Security & Trust Cookie SameSite Lab Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust Cookie Security Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust CORS Policy Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust CSP Builder & Auditor Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust CSP Nonce / Hash Helper Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust DNS Record Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust Email Header / SPF-DKIM-DMARC Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust HTTP Headers & Security Headers Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust JWKS Rotation Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open JWT Security & Trust JWT / JWK / OAuth Token Inspector Decode JWT headers and claims locally, inspect registered claims, and highlight security boundaries. Open JWT Security & Trust JWT Decoder Decode JWT headers and claims locally, inspect registered claims, and highlight security boundaries. Open JWT Security & Trust JWT Risk Scanner Decode JWT headers and claims locally, inspect registered claims, and highlight security boundaries. Open VH Security & Trust OAuth / OIDC Flow Debugger Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust Rate Limit Header Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open PII Security & Trust Secret & PII Scanner Redactor Detect and redact common secrets, emails, IBANs, and log-sensitive payload fragments. Open PII Security & Trust Secret Scanner Workbench Detect and redact common secrets, emails, IBANs, and log-sensitive payload fragments. Open VH Security & Trust SPF / DMARC Builder Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust SRI Hash Generator & Asset Integrity Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Security & Trust TLS Certificate Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open SIG Security & Trust Webhook Replay Payload Builder Generate or verify webhook signature fixtures and compare payload, secret, and header evidence. Open SIG Security & Trust Webhook Signature Verifier & Generator Generate or verify webhook signature fixtures and compare payload, secret, and header evidence. Open

VAT Regulated Formats EU VAT Number Validator & Generator Check EU VAT prefix and local syntax while clearly separating VIES status from offline evidence. Open IBAN Regulated Formats IBAN Generator Generate structural IBAN fixtures with MOD-97 check digits and copy-ready grouping. Open IBAN Regulated Formats IBAN Validator Validate IBAN structure, country profile, length, and MOD-97 evidence in the browser. Open XML Regulated Formats ISO 20022 / SEPA XML Inspector Inspect ISO 20022 / SEPA XML structure before bank handoff or QA review. Open MRZ Regulated Formats MRZ Passport Parser & Generator Parse passport MRZ lines, replay structural checks, and generate safe travel-document fixtures. Open TEL Regulated Formats Phone E.164 Validator & Generator Normalize, generate, and inspect E.164 phone fixtures with country-prefix evidence. Open POST Regulated Formats Postal Code Validator & Generator Validate or generate postal-code samples while keeping deliverability lookup boundaries explicit. Open XML Regulated Formats SEPA pain.001 Fixture Helper Inspect ISO 20022 / SEPA XML structure before bank handoff or QA review. Open BIC Regulated Formats SWIFT / BIC Validator & Generator Inspect SWIFT/BIC structure, country evidence, branch shape, and directory lookup boundaries. Open

VH DevOps & Cloud QA Dockerfile Auditor Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH DevOps & Cloud QA GitHub Actions Workflow Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH DevOps & Cloud QA Kubernetes YAML Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH DevOps & Cloud QA NGINX / Apache Config Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH DevOps & Cloud QA Terraform Plan / HCL Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open

VH Frontend & Product QA Accessibility Snapshot Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Frontend & Product QA Color Contrast & Token Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Frontend & Product QA Design Token Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Frontend & Product QA HTML Meta / SEO Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Frontend & Product QA Source Map / Stack Trace Parser Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Frontend & Product QA User-Agent & Client Hints Parser Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open

VH AI & Data Ops Browser Storage Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH AI & Data Ops Eval Dataset Builder Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open {} AI & Data Ops JSONL Fine-Tune Dataset Inspector Format, repair, inspect schema hints, flatten paths, and scan sensitive payload keys. Open VH AI & Data Ops Prompt Injection Scanner Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH AI & Data Ops RAG Chunking Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH AI & Data Ops Vector Metadata Schema Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open

VH Text, Time & Utilities API Error Code Catalog Builder Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Base64 / Binary Payload Inspector Encode or decode Base64, detect data URIs, byte signatures, and URL-safe variants. Open VH Text, Time & Utilities Base64 Decoder Encode or decode Base64, detect data URIs, byte signatures, and URL-safe variants. Open VH Text, Time & Utilities Base64 Encoder Encode or decode Base64, detect data URIs, byte signatures, and URL-safe variants. Open VH Text, Time & Utilities BIN / IIN Shape Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Canonical / Hreflang Auditor Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Card Number Masker / Luhn Fixture Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Case Converter Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Cron Expression Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Currency Minor Units Checker Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Date / Timezone Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Duplicate Row Detector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Email Address & Domain Workbench Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities HTML Decoder Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities HTML Encoder Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Locale Date Parser Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Locale Number Parser Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Locale Test Data Generator Generate localized JSON or CSV fixtures for country-aware QA and form testing. Open VH Text, Time & Utilities Log Redaction Rule Tester Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Markdown / MDX Inspector Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities MD5 Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Password Policy Tester Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Payment Reference Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities REST Pagination Contract Tester Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities robots.txt Tester Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Search Snippet Preview Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities SHA-1 Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities SHA-256 Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Slug Generator Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open VH Text, Time & Utilities Unicode Normalizer / Confusable Scanner Open a browser-only developer workbench with premium debug evidence and copy-ready output. Open URL Text, Time & Utilities URL Decoder Encode, decode, parse query parameters, and inspect redirect or credential risk hints. Open URL Text, Time & Utilities URL Encoder Encode, decode, parse query parameters, and inspect redirect or credential risk hints. Open URL Text, Time & Utilities URL Redirect & UTM Workbench Encode, decode, parse query parameters, and inspect redirect or credential risk hints. Open ID Text, Time & Utilities UUID Generator Generate and validate UUID fixtures with version, variant, and batch support. Open