CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV locally — no upload, perfect for data imports and API work.
About this tool
CSV and JSON are the lingua franca of data imports — convert between formats for APIs, spreadsheets, and CMS bulk uploads.
All conversion runs locally — sensitive customer data never uploads.
How to use the CSV ↔ JSON Converter
- 1
Paste CSV or JSON data into the input area.
- 2
Select conversion direction: CSV to JSON or JSON to CSV.
- 3
Copy the converted output — all processing in your browser.
Conversion tips
CSV first row becomes JSON keys — use clear header names without spaces.
Escape quotes in CSV fields properly before converting complex text fields.
Pro tips
- Validate JSON output with json formatter after conversion.
- Keep UTF-8 encoding for international characters.
Social Media Specs & Character Limits
Optimal text formatting, length guidelines, and parameters for all major platforms:
| Platform | Max Length | Ideal Length | Hashtag Policy |
|---|---|---|---|
| Instagram Feed & Reels | 2,200 chars | 125 - 150 chars | 3 - 5 tags (Recomm.) |
| TikTok Posts | 4,000 chars | 100 - 200 chars | 3 - 5 tags (Ideal) |
| YouTube Description | 5,000 chars | 1,500 chars (SEO) | 3 - 10 tags |
| X / Twitter Post | 280 chars | 100 - 140 chars | 1 - 2 tags |
| LinkedIn Articles & Posts | 3,000 chars | 500 - 1,000 chars | 3 - 5 tags |
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Frequently Asked Questions
Is my data sent to a server?▼
No. Conversion runs entirely locally — sensitive data stays on your device.
Does it handle headers?▼
Yes. CSV first row is treated as column headers when converting to JSON.