All extensions

Beautiful JSON formatting with themes and export options

JSON Formatter Pro 2026

Ultra-modern JSON formatter with blazing fast viewer, syntax highlighting, breadcrumb navigation, and toggle view modes.

JSON Inspector — JSON Viewer & Formatter

See any JSON page as a collapsible tree — syntax highlighting, copy path and copy value. No tracking, no data collected.

JSONKit — JSON Formatter & Validator

Auto-format JSON pages into a tree, diff two JSON docs, decode JWTs, and format API responses — all in your browser. 100% private.

JSON Lens

Shows JSON responses as a collapsible, searchable tree — without altering a single value.

JSON Master Pro

Professional JSON formatter and converter with auto-formatting, syntax highlighting, and code generation.

JSON Mate

Inspect JSON, JSONP, and JSONL payloads with a typed viewer and toolkit.

JSON-RPC Rewriter

Intercept and mock JSON-RPC responses for frontend development and QA testing.

JSON Tidy: API Response Viewer

See every JSON response a page loads. Search them, view as a tree or table, compare API calls, copy as cURL or export to Postman.

JSON Viewer

A modern UI for viewing and manipulating JSON

JSON Viewer & Formatter — Big Files, Tree & Search

Open, format & explore huge JSON fast. Collapsible tree, instant search, highlighting. 100% local & private.

Juju Dev Helper

Capture, filter, export, and audit DevTools network requests. Find leaked secrets, missing security headers, and more.

Just Console Errors

Capture console errors, explain them clearly, and copy useful error details.

JWT Inspector

Decode and inspect JWT tokens

karis hand

CDP browser control for Karis AI Agent

Kayn Scrum Poker

Real-time planning poker for agile teams — right in your browser.

KeepCode

Prep smarter for coding interviews! KeepCode tracks your LeetCode progress so you can focus on solving.

Keyboard Studio

Test web keyboard configurators with virtual WebHID devices from a local profile catalog.

Key Overlay

Shows the keys you press and where you click, in tabs you turn it on for.

KeyRail Media Bridge

Lets the KeyRail desktop app see and control media playing in individual browser tabs.

KeySurge

Keyboard hint mode: label targets on the page, type the hint to follow links and buttons.

KeywordAxe — Keyboard Shortcuts for Google Ads

Keyboard shortcuts, bulk negative keywords, API-backed spend alerts & custom performance rules for Google Ads.

Keyword Rank Checker — ASO Rank Tracker

Check and track where your app ranks for keywords in App Store and Google Play search, by country, with rank history.

Kiểm Tra Mật Độ Từ Khóa - Võ Việt Hoàng

Phân tích mật độ từ khóa chuẩn SEO cho trang web bất kỳ hoặc văn bản tự nhập. Công cụ hỗ trợ On-page đắc lực.