Launched January 6, 2026
JSON Merge
Online JSON Merge Tools
Free190 impressions#1208 of its week
Best JSON merge, split, compare, edit and visualize tools. 100% free and no login required.
JSON Merge is a free online tool to merge, split, compare, edit, and visualize JSON files directly in the browser.
- for
- Developers, data analysts, and IT professionals who work with JSON data
- pricing
- freemium
Key features
6 features of JSON Merge
- Nested structure handling — Merges complex objects, arrays, and nested JSON while preserving data integrity
- Instant processing — Performs merges instantly in the browser without server delays
- Custom conflict resolution — Offers multiple algorithms to resolve merge conflicts according to user needs
- Visual side-by-side diff — Provides an intuitive visual diff tool for comparing and merging JSON files
- Client-side security — All processing occurs locally; data never leaves the browser
- Free unlimited use — No login, subscription, or hidden fees required
Use cases
- Combine API response schemas from multiple services
- Resolve configuration differences between environment JSON files
- Compare and merge versioned JSON data during code reviews
JSON Merge pricing
- Free$0Up to 3 projects · 1 GB storage · Basic analytics · Community support
- Pro$9.9/month/monthUnlimited projects · 10 GB storage · Advanced analytics · Priority support
- Lifetime$199All Pro features · 100 GB storage · Dedicated support · Enterprise-grade security
JSON Merge FAQ
What does JSON Merge do?+
It merges, compares, edits, and visualizes JSON files directly in the browser.
Do I need to create an account?+
No, the tool is completely free and requires no login.
Is my data stored on the server?+
All processing is client-side; your data never leaves your browser.
Can it handle large JSON files?+
Yes, the service is optimized to efficiently process large JSON files.
What conflict resolution options are available?+
Multiple algorithms are provided to resolve merge conflicts according to your preferences.
Summarized by DevHunt from jsonmerge.com · Oct 6, 2026. Details may change; check the official site.
