JSON entries to object
ClientReverse of object-to-entries—assemble maps from pair lists exported elsewhere.
Learn more: fromEntries
Each row must be a two-element array—duplicate keys follow Object.fromEntries last-wins semantics.
Local processing
Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.
Nearby workflows on Toolcore
- JSON object to entries — Convert a JSON object to an array of [key, value] pairs—Object. once JSON text parses on this page.
- JSON deep merge — Merge two objects recursively—right overlays left; dual JSON prefill. once JSON text parses on this page.
- JSON apply defaults — Fill missing keys from a defaults object—no overwrites; shallow or deep; local only. once JSON text parses on this page.
- JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
Common use cases
- Reverse of object-to-entries—assemble maps from pair lists exported elsewhere.
- Paste valid JSON, then read the transformed output below.
Common mistakes to avoid
Invalid JSON
Fix parse errors before expecting output.
FAQ
Is data uploaded?
No—all parsing and transforms run locally.
How is this different from jq?
This page focuses on one deterministic task without a filter language.
More tools
Related utilities you can open in another tab—mostly client-side.
JSON object to entries
ClientConvert a JSON object to an array of [key, value] pairs—Object.entries in the browser.
JSON deep merge
ClientMerge two objects recursively—right overlays left; dual JSON prefill.
JSON apply defaults
ClientFill missing keys from a defaults object—no overwrites; shallow or deep; local only.
JSON formatter
ClientJSON format online: pretty-print, minify, validate, escape, download .json.