Captain JSON - Json Viewer & validator
Best extension for Json viewer, Json Vaidator with 20+ tools
This is 1 of 278 launches in developer utilities and programming libraries — see how it stacks up on momentum and crowding →
108 other launches read as similar to this one →
Details
- External ID
- 1257774
- Source
- PH
- Company
- —
- Product
- JSON Viewer
- Website domain
- producthunt.com
- Launched
- Oct. 1, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.32882190095355274
- Tags
- Chrome Extensions, API, Software Engineering
- Fetched at
- Oct. 2, 2026, 1:01 a.m.
- Updated at
- Oct. 2, 2026, 1:01 a.m.
Description
Captain JSON is a free JSON toolkit for developers and QA engineers — format, validate, compare, convert and generate JSON with 20+ tools, right in your browser. Captain JSON is a free JSON toolkit for developers and QA engineers — format, validate, compare, convert and generate JSON with 20+ tools, right in your browser. ✓ 100% Offline ✓ Privacy First ✓ Lightweight ✓ Blazing Fast
Enrichment
- Theme
- developer utilities and programming libraries
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- json viewer and validator extension for developers
- Manually corrected
- False
Could you build this?
Yes A browser extension for formatting, validating, diffing, and converting JSON is a classic client-side utility using standard JavaScript libraries.
Competitors
Other products that read as similar to this one — 108 launches clear the similarity bar, closest 8 shown.
Attention rank: #47 of 109 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 334 days after the earliest competitor.
- JSON Object Validator · ph · 2026-09-24 · 2 upvotes · similarity 0.62
- JSON Formatter - Browser Tools · ph · 2026-09-25 · 2 upvotes · similarity 0.61
- BestJSON · ph · 2026-10-03 · 1 upvotes · similarity 0.60
- Parsekit — Free JSON Tools for Developer · ph · 2026-09-29 · 1 upvotes · similarity 0.59
- JSON Formatter & Validator · ph · 2026-09-18 · 1 upvotes · similarity 0.59
- Instant JSON Formatter · ph · 2026-09-27 · 1 upvotes · similarity 0.57
- JSON Editor Online · ph · 2026-09-30 · 1 upvotes · similarity 0.57
- json-toolkit · github · 2026-09-29 · 37 upvotes · similarity 0.56
Other launches for this product
Same idea, different domain
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