List Comparator
Compare line lists, IDs, codes, email lists, and duplicate values.
Tools Catalog
Search and open browser-based developer tools for common JSON, API, SQL, security, encoding, DevOps, and text workflows.
Tools run locally in your browser. No upload required for normal tool processing.
New: browse ready-made recipes in the Workflow Gallery or chain tools yourself in the Workflow Builder — browser-only automation that never sends your data anywhere.
Text Diff & Compare
Compare text, configs, code snippets, release notes, and copied file versions.
JSON Diff
Compare JSON responses and payloads with order-insensitive options.
CSV Join / Merge / Compare
Compare CSV exports by key, find changed rows, missing rows, and duplicate keys.
JSON ↔ CSV Converter
Convert JSON arrays to Excel-ready CSV, or convert CSV back to JSON.
JSON ↔ YAML Converter
Convert JSON and YAML for config, Kubernetes, and API workflows.
JSON Formatter & Validator
Format, validate, minify, sort, copy, and download JSON.
YAML Validator
Validate YAML syntax for config, CI/CD, Helm, and Kubernetes files.
JSON Patch & Pointer
Generate and apply RFC 6902 patches and test RFC 6901 pointer paths.
JSON Schema Validator
Validate JSON payloads against schemas and inspect precise error paths.
JSONPath Tester
Test JSONPath selectors, filters, wildcards, and recursive matches.
Schema Inspector
Infer structure, property types, optional fields, and candidate schemas from JSON.
CSV Viewer / Cleaner
View, inspect, clean, filter, and normalize CSV rows.
JSON Lines / Log Viewer
Parse JSONL, NDJSON, and structured log lines into readable events.
SQL Formatter
Format SQL queries and inspect CREATE TABLE schema structure.
CSV → SQL INSERT / UPSERT
Turn CSV rows into INSERT, UPSERT, or MERGE statements.
SQL IN Clause Builder
Generate quoted and chunked SQL IN or NOT IN clauses from lists.
SQL Join Builder
Build SQL JOIN boilerplate visually with aliases and ON conditions.
cURL Converter
Convert cURL commands to fetch, Axios, Python requests, Node, and more.
HAR Sanitizer & Replay Packager
Redact secrets from HAR files and export replay-ready packs.
HTTP Headers Parser & Builder
Parse, normalize, edit, and export HTTP request or response headers.
URL Parser & Query Builder
Parse URL components, query parameters, fragments, and rebuild URLs.
JSON → cURL / Postman Snippets
Generate request snippets from JSON payloads, headers, and auth metadata.
OpenAPI → Code Snippets
Generate cURL, fetch, and Axios snippets from OpenAPI specs.
OpenAPI → Postman Collection
Convert OpenAPI or Swagger specs into Postman collection JSON.
XML / XPath / SOAP Inspector
Format XML, inspect SOAP envelopes, and test XPath selectors.
XML to JSON Converter
Convert XML and SOAP-like payloads into readable JSON.
GraphQL Query + Variables Playground
Validate GraphQL query and variables JSON and generate request output.
HTTP Security Headers Analyzer
Review CSP, HSTS, frame, referrer, and related browser security headers.
PII Detector & Redactor
Detect and redact common personal data patterns locally.
Secrets Scanner
Scan text for common credentials, tokens, and API keys.
JWT Decoder
Decode JWT header and payload claims locally.
JWT & OAuth Security Toolkit
Sign, verify, and inspect JWTs and generate OAuth PKCE values.
Certificate & PEM Tools
Decode X.509 certificates, inspect CSRs, and split PEM bundles.
JWK / JWKS / PEM Converter
Convert PEM, JWK, and JWKS locally, generate RFC 7638 kid values, sanitize public JWKS, and match JWTs to keys.
Webhook Signature Verifier
Verify Stripe, GitHub, Slack, and custom HMAC webhook signatures.
Base64 Encoder & Decoder
Encode, decode, and troubleshoot Base64 and Base64URL values.
URL Encoder & Decoder
Percent-encode and decode URL components and query strings.
URL & Payload Encoding Suite
Work with Base64URL, hex, gzip, deflate, query strings, and payload encodings.
.env ↔ Properties ↔ JSON Converter
Convert between .env, Java properties, JSON, and shell export formats.
Kubernetes Manifest Helper
Generate or validate Kubernetes YAML for common resources.
Dockerfile Linter
Review Dockerfiles for common build and runtime issues.
Docker Compose Helper
Generate, inspect, validate, and improve Docker Compose files for local multi-container stacks.
Cron Builder
Build cron expressions visually and preview next run times.
Cron Expression Analyzer
Explain cron expressions and show upcoming runs.
Regex Generator & Tester
Build and test regular expressions with matches and groups.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512, and related hashes.
Password & Token Generator
Generate strong passwords and random tokens locally.
UUID Generator
Generate UUID/GUID values for test data and fixtures.
Timestamp Converter
Convert Unix timestamps, epoch values, UTC, local time, and ISO timestamps.
Timezone / Date Math Calculator
Convert times, add business days, inspect ranges, and parse ISO durations.
Line Tools
Clean, deduplicate, sort, wrap, quote, and transform line-based text.
Lorem Ipsum & Slug Tools
Generate placeholder text and slug or case variants.
No matching tools. Try a broader keyword such as JSON, API, SQL, JWT, cron, URL, CSV, or diff.