List converter

Client

Lines, JSON arrays, and CSV-style rows—local only.

About List converter

Convert lines ↔ JSON array ↔ CSV row—paste lists for configs, APIs, or spreadsheets; local only. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

Nearby workflows on Toolcore

  • Sort lines alphabetically — Locale-aware A→Z / Z→A line sorts plus reverse—optional trim or case folding, browser-only. for the next text or markup step in your edit loop.
  • Remove duplicate lines — Collapse repeated lines in pasted text—trim or case-fold keys, optional sort—browser-only deduper. for the next text or markup step in your edit loop.
  • JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . for the next text or markup step in your edit loop.
  • CSV ↔ JSON — Paste a table or JSON array of objects—convert both ways, choose delimiter, client-side. for the next text or markup step in your edit loop.

Common use cases

  • Turn a column of hostnames into a JSON array for Terraform or Ansible vars.
  • Flatten a JSON string array export back into one value per line.
  • Build a single CSV row from line-based paste for quick spreadsheet import.

Common mistakes to avoid

  • Complex CSV with embedded commas

    Simple split/join only—quoted fields are partially handled on CSV → lines.

  • Non-string JSON arrays

    JSON → lines mode requires an array of strings only.

FAQ

Is data uploaded?

No. Conversions run in your browser tab.

Which direction should I use?

Pick a mode button first—each direction has its own rules.

More tools

Related utilities you can open in another tab—mostly client-side.