84 tools

Dev Quick Tools

Precision utilities for developers and power users.

Dev Quick Tools is built for debugging, payload inspection, string transforms, and launch support work that should not require opening a new project.

What you can do in Dev Quick Tools

Dev Quick Tools is aimed at the moments when you need a dependable utility around your main workflow, not a whole new environment. Developers, QA engineers, technical marketers, and support teams regularly need to format JSON, decode a JWT, test a regex, inspect a cron schedule, or generate a sitemap while they are already in the middle of shipping something else. This category keeps those tasks fast and local so you can validate an input, inspect an output, and get back to the real work. The tools are intentionally narrow, but they are designed to be trustworthy for day-to-day debugging and launch support. They favor browser-native execution, readable outputs, and quick copy or export actions. That makes them useful for quick investigation, support triage, demo prep, and technical QA, especially when the alternative is writing a throwaway script or switching to a terminal for a one-off task. The category is optimized for practicality: open the page, run the transform, confirm the result, and move on. If a task is higher-stakes, the related guides add context on validation, privacy, and where to double-check results before using them in production.

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JWT Decoder

Inspect JWT headers and payloads locally with optional public-key verification.

  • Local
  • No upload
  • Fast
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Regex Tester

Test regex patterns with highlighted matches, presets, and persistent flags.

  • Local
  • No upload
  • Fast
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Cron Parser

Decode cron expressions, use presets, and preview upcoming schedules.

  • Local
  • No upload
  • Fast
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JSON ⇄ YAML Converter

Convert between JSON and YAML locally for config and API workflows.

  • Local
  • No upload
  • Fast
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URL Parser + UTM Builder

Inspect URL parts and add clean UTM parameters for campaign links.

  • Local
  • No upload
  • Fast
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Hash Generator

Generate SHA-256, MD5, and HMAC hashes locally with Web Crypto.

  • Local
  • No upload
  • Fast
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React Config JSON Formatter

Format, validate, and debug React Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Environment JSON Formatter

Format, validate, and debug React Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React API Response JSON Formatter

Format, validate, and debug React API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Webhook Payload JSON Formatter

Format, validate, and debug React Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React State JSON Formatter

Format, validate, and debug React State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Native Config JSON Formatter

Format, validate, and debug React Native Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Native Environment JSON Formatter

Format, validate, and debug React Native Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Native API Response JSON Formatter

Format, validate, and debug React Native API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Native Webhook Payload JSON Formatter

Format, validate, and debug React Native Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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React Native State JSON Formatter

Format, validate, and debug React Native State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Next.js Config JSON Formatter

Format, validate, and debug Next.js Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Next.js Environment JSON Formatter

Format, validate, and debug Next.js Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Next.js API Response JSON Formatter

Format, validate, and debug Next.js API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Next.js Webhook Payload JSON Formatter

Format, validate, and debug Next.js Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Next.js State JSON Formatter

Format, validate, and debug Next.js State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Node.js Config JSON Formatter

Format, validate, and debug Node.js Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Node.js Environment JSON Formatter

Format, validate, and debug Node.js Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Node.js API Response JSON Formatter

Format, validate, and debug Node.js API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Node.js Webhook Payload JSON Formatter

Format, validate, and debug Node.js Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Node.js State JSON Formatter

Format, validate, and debug Node.js State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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TypeScript Config JSON Formatter

Format, validate, and debug TypeScript Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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TypeScript Environment JSON Formatter

Format, validate, and debug TypeScript Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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TypeScript API Response JSON Formatter

Format, validate, and debug TypeScript API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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TypeScript Webhook Payload JSON Formatter

Format, validate, and debug TypeScript Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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TypeScript State JSON Formatter

Format, validate, and debug TypeScript State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Python Config JSON Formatter

Format, validate, and debug Python Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Python Environment JSON Formatter

Format, validate, and debug Python Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Python API Response JSON Formatter

Format, validate, and debug Python API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Python Webhook Payload JSON Formatter

Format, validate, and debug Python Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Python State JSON Formatter

Format, validate, and debug Python State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Go Config JSON Formatter

Format, validate, and debug Go Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Go Environment JSON Formatter

Format, validate, and debug Go Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Go API Response JSON Formatter

Format, validate, and debug Go API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Go Webhook Payload JSON Formatter

Format, validate, and debug Go Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Go State JSON Formatter

Format, validate, and debug Go State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Django Config JSON Formatter

Format, validate, and debug Django Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Django Environment JSON Formatter

Format, validate, and debug Django Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Django API Response JSON Formatter

Format, validate, and debug Django API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Django Webhook Payload JSON Formatter

Format, validate, and debug Django Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Django State JSON Formatter

Format, validate, and debug Django State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Express Config JSON Formatter

Format, validate, and debug Express Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Express Environment JSON Formatter

Format, validate, and debug Express Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Express API Response JSON Formatter

Format, validate, and debug Express API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Express Webhook Payload JSON Formatter

Format, validate, and debug Express Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Express State JSON Formatter

Format, validate, and debug Express State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Vue Config JSON Formatter

Format, validate, and debug Vue Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Vue Environment JSON Formatter

Format, validate, and debug Vue Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Vue API Response JSON Formatter

Format, validate, and debug Vue API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Vue Webhook Payload JSON Formatter

Format, validate, and debug Vue Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Vue State JSON Formatter

Format, validate, and debug Vue State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Svelte Config JSON Formatter

Format, validate, and debug Svelte Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Svelte Environment JSON Formatter

Format, validate, and debug Svelte Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Svelte API Response JSON Formatter

Format, validate, and debug Svelte API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Svelte Webhook Payload JSON Formatter

Format, validate, and debug Svelte Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Svelte State JSON Formatter

Format, validate, and debug Svelte State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Spring Boot Config JSON Formatter

Format, validate, and debug Spring Boot Config JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Spring Boot Environment JSON Formatter

Format, validate, and debug Spring Boot Environment JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Spring Boot API Response JSON Formatter

Format, validate, and debug Spring Boot API Response JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Spring Boot Webhook Payload JSON Formatter

Format, validate, and debug Spring Boot Webhook Payload JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Spring Boot State JSON Formatter

Format, validate, and debug Spring Boot State JSON with instant browser-based error highlighting.

  • Local
  • No upload
  • Fast
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Auth0 JWT Decoder

Decode and inspect Auth0 JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Firebase JWT Decoder

Decode and inspect Firebase JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Okta JWT Decoder

Decode and inspect Okta JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Cognito JWT Decoder

Decode and inspect Cognito JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Supabase JWT Decoder

Decode and inspect Supabase JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Clerk JWT Decoder

Decode and inspect Clerk JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Keycloak JWT Decoder

Decode and inspect Keycloak JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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FusionAuth JWT Decoder

Decode and inspect FusionAuth JWT tokens locally without sending secrets to a server.

  • Local
  • No upload
  • Fast
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Image Base64 Encode/Decode

Instantly encode or decode Image formats using Base64 directly in the browser.

  • Local
  • No upload
  • Fast
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PDF Base64 Encode/Decode

Instantly encode or decode PDF formats using Base64 directly in the browser.

  • Local
  • No upload
  • Fast
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SVG Base64 Encode/Decode

Instantly encode or decode SVG formats using Base64 directly in the browser.

  • Local
  • No upload
  • Fast
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JSON Payload Base64 Encode/Decode

Instantly encode or decode JSON Payload formats using Base64 directly in the browser.

  • Local
  • No upload
  • Fast
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Auth Header Base64 Encode/Decode

Instantly encode or decode Auth Header formats using Base64 directly in the browser.

  • Local
  • No upload
  • Fast