ALL TOOLS

Developer tools catalog

55 tools, 9 release checklists, and 12 skill challenges across 9 canonical categories. Your pasted tool data is processed locally in your browser and is not uploaded for tool processing.

Search tools

List Comparator

Diff two lists, find unique / common items, duplicates.

Compare & Diff

Text Diff

Side-by-side diff with word-level change detection.

Compare & Diff

JSON Diff

Compare two JSON payloads, ignoring key order.

Compare & Diff

CSV Join / Merge

Join, merge, and compare CSV files by key.

Compare & Diff

Compare Environments

Multi-mode env diff: .env, ConfigMap, YAML, JSON, headers.

Compare & Diff

Regex Tester

Pattern builder with presets and live match highlighting.

Utilities

JSON ↔ CSV

Bidirectional conversion with auto-format detection.

Data Formatters & Converters

JSON ↔ YAML

Convert API responses and configs locally between JSON and YAML.

Data Formatters & Converters

JSON Formatter

Validate, pretty-print, minify with tree view and secret detection.

Data Formatters & Converters

YAML Validator

Syntax errors with line/col, multi-doc support.

Data Formatters & Converters

JSON Patch & Pointer

Apply RFC 6902 patches; resolve JSON Pointers.

Data Formatters & Converters

JSON Schema Validator

Validate JSON documents against a Draft-7 / Draft-2020 schema.

Data Formatters & Converters

JSONPath Tester

Extract values using JSONPath expressions.

Data Formatters & Converters

Schema Inspector

Infer and inspect the shape of any JSON document.

Data Formatters & Converters

CSV Viewer

Preview, auto-detect delimiter, trim, export.

Data Formatters & Converters

JSONL Log Viewer

Inspect newline-delimited JSON logs with field filters.

Data Formatters & Converters

SQL Formatter

Format SQL with indentation and keyword casing.

Data Formatters & Converters

CSV → SQL

Generate INSERT / UPSERT statements from CSV.

Data Formatters & Converters

SQL IN Builder

Build and chunk large SQL IN(...) clauses safely.

Data Formatters & Converters

SQL Join Builder

Compose multi-table joins with previews.

Data Formatters & Converters

cURL Converter

Convert curl to Fetch, Axios, Python, Java, Node.

API & Web

API Debugging Studio

Multi-panel board: parse one cURL or HAR into headers, body, JWT, snippets.

API & Web

HAR Sanitizer

Redact secrets, export Postman / cURL / fetch packs.

API & Web

HTTP Headers

Parse / edit headers in a grid, detect duplicates.

API & Web

Security Headers

Audit Content-Security-Policy, HSTS, and other security headers.

Security & Auth

PII Detector

Find and redact personally identifiable information.

Security & Auth

Secrets Scanner

Detect API keys, tokens, and credentials in payloads.

Security & Auth

URL Parser

Parse URL parts, edit query params in a grid, rebuild.

API & Web

Request Snippet Builder

Build HTTP request snippets for any language.

API & Web

OpenAPI Client Snippets

Generate fetch / cURL / Axios calls from OpenAPI.

API & Web

OpenAPI → Postman

Export full Postman Collection v2.1 from OpenAPI.

API & Web

XML / XPath / SOAP

Format XML, run XPath, inspect SOAP envelopes.

API & Web

XML ↔ JSON

Lossless conversion with attribute handling.

API & Web

GraphQL Playground

Validate GraphQL, generate cURL and fetch snippets.

API & Web

JWT Decoder

Decode JWTs locally and verify HMAC signatures with a supplied secret.

Security & Auth

JWT & OAuth Toolkit

Sign / verify JWTs (HS/RS/ES), generate PKCE values.

Security & Auth

Certificate & PEM

Decode X.509 certs, inspect CSRs, split PEM bundles.

Security & Auth

JWK / JWKS / PEM

Convert between JWK, JWKS, and PEM key formats.

Security & Auth

Webhook Verifier

Verify Stripe / GitHub / Slack HMAC signatures.

Security & Auth

Base64 Encode / Decode

Encode or decode plain text to Base64.

Encode / Decode

URL Encoder

Encode / decode URL strings and query parameters.

Encode / Decode

Encoding Suite

Base64URL, Hex, Gzip / Deflate, Querystring conversions.

Encode / Decode

.env Converter

Convert between .env, .properties, JSON, bash export.

DevOps & Config

Kubernetes Helper

Generate / validate Deployment, Service, Ingress YAML.

DevOps & Config

Dockerfile Linter

Check for unpinned images, root containers, large COPYs.

DevOps & Config

Docker Compose Helper

Generate / validate compose.yaml with healthchecks.

DevOps & Config

Cron Builder

Build cron expressions with guided UI and previews.

DevOps & Config

Cron Analyzer

Explain any cron expression and show next runs.

DevOps & Config

Hash Generator

MD5, SHA-1, SHA-256, SHA-512 — hex or Base64.

Utilities

Password Generator

Passwords, tokens, test numbers with custom charsets.

Utilities

UUID Generator

v4, v7, v5 UUIDs with bulk generation and export.

Utilities

Timestamp Converter

Unix epoch ↔ local / UTC / ISO with shareable links.

Utilities

Timezone & Date Math

Convert times across timezones, add/subtract durations.

Utilities

Line Tools

Trim, dedupe, sort, wrap, add prefix / suffix, join.

Utilities

Lorem Ipsum

Generate placeholder paragraphs, sentences, words.

Utilities

API Release Checklist

Pre-release checklist: validate the OpenAPI spec, scan sample responses, and confirm versioning.

Workflows

CSV Reconciliation Checklist

Reconcile source vs. target CSVs during a migration — row counts, keys, and diffs.

Workflows

Dockerfile Review Checklist

Dockerfile review: lint locally, scan for secrets, and confirm image best practices.

Workflows

Env Variable Comparison Checklist

Compare environment variables across dev, staging, and production.

Workflows

HAR Sanitization Checklist

Strip cookies, auth headers, tokens, and PII from a HAR before sharing with support.

Workflows

JWT / OAuth Review Checklist

JWT / OAuth security review: decode locally and confirm alg, exp, audience, and scopes.

Workflows

Kubernetes Manifest Review

Parse YAML, scan for secrets, and confirm probes, limits, and security context.

Workflows

OpenAPI Compatibility Checklist

Walk every breaking-change category before bumping your OpenAPI version.

Workflows

Secrets & PII Pre-check

Pre-release scan for secrets and PII in diffs, logs, and sample payloads.

Workflows

Workflow Gallery

Run browser-only developer workflows to clean, convert, validate, and transform JSON, CSV, JWTs, logs, configs, and URLs. Nothing leaves your browser.

Workflows

Workflow Builder

Build, run, and save linear developer workflows in your browser. Chain tools like JSON formatter, Base64, and JWT decoder — nothing is sent to a server.

Workflows