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Format JSON Online vs Offrun

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Format JSON Online compared with Offrun
DetailFormat JSON Online logo Format JSON OnlineOffrun logo Offrun
What it doesFree online JSON formatter, validator, minifier and converter with 60+ tools for developers Run Claude Code, Codex, Antigravity, Grok Build and Muse Code in parallel on your Mac with git worktrees and peer review
StageStartup Not given
Founded2025 Not given
Based inUS US
Pricing modelFree Free
PricingNot given Free. Every feature, no seats to count, no card. Unlimited agents and projects, unlimited on-device dictation, up to 100 on-device schedules, unlimited connected coding agent accounts.
Key features
  • JSON formatter with syntax highlighting and customizable indentation
  • JSON validator with error location and fix suggestions
  • AI-powered error fixing for common JSON issues
  • JSON minifier reducing file size by 30-50%
  • JSON to 15+ format conversions including CSV, XML, YAML, SQL, C#, Python
  • Support for files up to 100MB
  • 100% client-side processing with no server data exposure
  • Peer review by a second agent before accepting changes
  • Multiple account support and automatic usage limit handling
  • Integrated preview browser and diff viewer
  • Support for Claude Code, Codex, Antigravity, Grok Build and Muse Code
What makes it different
  • AI-powered features for automatic error fixing and data generation
  • No signup, registration or installation required
  • Trusted by 20,000+ developers worldwide
  • All computation and data stays on your Mac; no server involvement in processing your code or handling your API keys
  • Completely free with no seat counting or subscription required
  • Use multiple accounts per agent to work around usage limits without losing context
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)22 +1 (up) since last check22 no change since last check
Trust Flow (Majestic)215
Citation Flow (Majestic)3132
Referring domains (Majestic)278222

5 details filled in for both companies.

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