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11+ developer tools: JSON formatter, comparator, cron decoder/generator, JWT decoder, base64, color picker & more. QwickDev - Developer Tools Extension Replace 10-15 separate tool websites with QwickDev. An all-in-one developer toolkit with 11+ essential tools built directly into Chrome. No more tab switching. No ads. No signup. Just productivity. What's Inside: ✓ JSON Formatter & Validator — Format, minify, validate, and repair JSON ✓ Text & JSON Comparator — Visual side-by-side diffs with character highlighting ✓ Cron Expression Decoder & Generator — Decode cron expressions to human-readable format, generate new expressions, see next run time ✓ Color Picker — 10+ color formats, accessibility checker, color blindness simulator ✓ JWT Decoder — Decode and analyze authentication tokens instantly ✓ Base64 Encoder/Decoder — Encode and decode Base64 strings ✓ Timestamp Converter — Unix timestamps with timezone support ✓ Generators — Passwords, UUIDs, hashes (MD5, SHA1, SHA256) ✓ Tool Search — Find any tool instantly Why Developers Choose QwickDev: ✓ Lightning Fast — Instant processing, zero delays ✓ Completely Free — No premium tier, no paywalls ✓ Privacy First — 100% local processing, zero data collection ✓ Works Offline — No internet required ✓ Dark Mode — Full light and dark theme support ✓ Keyboard Shortcuts — Optimized for power users ✓ Professional Design — Clean, minimal, modern UI Real-World Use Cases: Debug JSON APIs, compare code changes, pick exact colors, decode JWT tokens, understand cron schedules, convert timestamps across timezones, generate secure passwords, validate API responses, check accessibility compliance. Your Data Stays Private: All processing happens in your browser. No data collection. No tracking. No telemetry. Your data never leaves your computer. Get started in seconds—click the QwickDev icon and start using tools instantly. No setup required.
Jul 17, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.