JSON を YAML に変換

Free online JSON to YAML converter. Fast, secure, no signup required.

12.9K+ ファイル変換済み

ファイルをここにドロップ

またはクリックして選択

ファイルを選択

Accepted: JSON files · Max 100 MB per file

json yaml

変換完了！

Download in s

Get the download link sent to you:

Link will be sent to your email!

ダウンロード

WhatsApp Email

本日の無料変換残り /3

変換完了！

ダウンロード

WhatsApp Email

File converted!

One-time payment · Stripe & PayPal

Convert often? Save with a subscription:

Need to convert JSON to YAML? MegaConvert makes it easy. Upload your JavaScript Object Notation (JSON) file and get a YAML Ain't Markup Language (YAML) file in seconds — no software to install, no signup required. Whether you need this conversion for data analysis / web development, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.

How to Convert JSON to YAML Online

1
Upload your JSON file
Click the upload area or drag and drop your JSON file. Files up to 25MB are free. Larger files are supported with pay-per-use.
2
Choose YAML as output format
YAML is automatically selected on this page. You can adjust conversion settings if needed.
3
Click Convert
Hit the Convert button to start processing. Your file will be converted using our high-performance servers.
4
Download your YAML file
Once conversion is complete, click Download to save your new YAML file. Free files are available for 1 hour.

Why Convert JSON to YAML?

**Reduce file size** — Converting between formats can significantly reduce file size, making files easier to share via email or cloud storage.
**Software requirements** — Your software or platform may require YAML format specifically. Converting ensures full compatibility.

JSON vs YAML — Format Comparison

Feature	JSON	YAML
Full Name	JavaScript Object Notation	YAML Ain't Markup Language
Developer	Douglas Crockford	Clark Evans, Oren Ben-Kiki, Ingy dot Net
First Released	2001	2001
Category	Web	Web
Extension	.json	.yaml
MIME Type	application/json	text/yaml

Nested data structures may flatten when converting to CSV.

About JSON Format

Lightweight data interchange format that is easy for humans and machines to read and write.

Full name: JavaScript Object Notation

Developer: Douglas Crockford (2001)

About YAML Format

Human-friendly data serialization format used for configuration files and data exchange.

Full name: YAML Ain't Markup Language

Developer: Clark Evans, Oren Ben-Kiki, Ingy dot Net (2001)

よくある質問

Upload your JSON file to MegaConvert.io, select YAML as the output format, and click Convert. Your converted file will be ready to download in seconds. No software installation required.

Yes! Files up to 25MB can be converted for free, up to 3 times per day. For larger files, pay-per-use pricing starts at just $2 for files up to 100MB.

Absolutely. All uploaded files are encrypted in transit (HTTPS), scanned for viruses, and automatically deleted after conversion. We never share or access your files.

Free users can convert files up to 25MB. Pay-per-use supports files up to 2GB. Subscribers get up to 2GB with priority processing.

Lightweight data interchange format that is easy for humans and machines to read and write. Developer: Douglas Crockford (2001).

Human-friendly data serialization format used for configuration files and data exchange. Developer: Clark Evans, Oren Ben-Kiki, Ingy dot Net (2001).