Data Converters

Free Online Converters

Convert between JSON, XML, CSV, YAML, HTML, and more. All conversions run client-side — your data never leaves your browser.

58 converters available

code
JSON to XMLarrow_forward
table
JSON to CSVarrow_forward
code
JSON to YAMLarrow_forward
table
JSON to TSVarrow_forward
text_fields
JSON to Stringarrow_forward
table
JSON to Tablearrow_forward
code
JSON to TOMLarrow_forward
code
JSON to NDJSONarrow_forward
account_tree
JSON to GraphQLarrow_forward
article
JSON to Markdownarrow_forward
code
XML to JSONarrow_forward
table
XML to CSVarrow_forward
code
XML to YAMLarrow_forward
text_fields
XML to Stringarrow_forward
table
XML to Tablearrow_forward
code
YAML to JSONarrow_forward
code
YAML to XMLarrow_forward
table
YAML to CSVarrow_forward
code
CSV to JSONarrow_forward
code
CSV to XMLarrow_forward
code
CSV to YAMLarrow_forward
html
CSV to HTMLarrow_forward
table
CSV to Tablearrow_forward
table
TSV to Tablearrow_forward
table
HTML to Tablearrow_forward
article
HTML to Markdownarrow_forward
html
Markdown to HTMLarrow_forward
code
Markdown to JSONarrow_forward
table
Markdown Table Generatorarrow_forward
code
String to JSONarrow_forward
rss_feed
RSS to JSONarrow_forward
html
Excel to HTMLarrow_forward
code
TOML to JSONarrow_forward
code
NDJSON to JSONarrow_forward
account_tree
GraphQL to JSONarrow_forward
pin
Decimal to Binaryarrow_forward
pin
Decimal to Hexarrow_forward
pin
Decimal to Octalarrow_forward
pin
Binary to Decimalarrow_forward
pin
Hex to Decimalarrow_forward
pin
Octal to Decimalarrow_forward
pin
Hex to Binaryarrow_forward
pin
Binary to Hexarrow_forward
image
PNG to JPGarrow_forward
image
JPG to PNGarrow_forward
image
PNG to WebParrow_forward
image
WebP to PNGarrow_forward
image
Image to Base64arrow_forward
image
SVG Optimizerarrow_forward
sync_alt
JSX to TSXarrow_forward
api
OpenAPI to JSONarrow_forward
api
OpenAPI to YAMLarrow_forward
memory
MessagePack Encodearrow_forward
memory
MessagePack Decodearrow_forward
memory
CBOR Encodearrow_forward
memory
CBOR Decodearrow_forward
cloud
HCL to JSONarrow_forward
cloud
JSON to HCLarrow_forward

What Are Online Data Format Converters?

Online data format converters are browser-based tools that instantly transform structured data from one format to another — such as JSON to XML, CSV to YAML, or XML to JSON — without requiring any software installation or server uploads.

All conversions on OpenFormatter run entirely in your browser using client-side JavaScript. Your data is never sent to any server, making these tools safe for sensitive or proprietary data.

Common Use Cases

  • check_circleConvert API JSON responses to CSV for spreadsheet analysis
  • check_circleTransform XML config files to JSON for modern web apps
  • check_circleConvert YAML pipeline configs to JSON for debugging
  • check_circleMigrate CSV data exports to JSON for database imports
  • check_circleConvert RSS feeds to JSON for JavaScript consumption
  • check_circleTransform spreadsheet data to HTML tables for web pages

Frequently Asked Questions

Is my data safe when using these converters?

Yes. All conversions happen entirely in your browser. No data is uploaded to any server, so your information stays completely private.

Which format conversions are supported?

We support conversions between JSON, XML, CSV, YAML, TSV, HTML, and plain strings — covering the most common data interchange formats used in web development.

Do the converters handle nested or complex data structures?

Yes. Our converters handle deeply nested objects, arrays, and mixed types, preserving the full structure of your data during conversion.

Are there any file size limits?

Since processing is done in the browser, performance depends on your device. Most conversions work well up to several megabytes of data.

Developer Insights

From the Blog

View all articlesarrow_forward
Formats8 min read

YAML vs JSON in 2024: When to Use Each

A definitive guide on choosing the right data serialization format for modern infrastructure.

Read articlearrow_forward
Formats5 min read

XML Is Not Dead: Why Enterprises Still Rely on It

Despite the JSON revolution, XML remains entrenched in healthcare, finance, and government systems.

Read articlearrow_forward
Privacy4 min read

The Case for 100% Client-Side Data Processing

Why we built OpenFormatter to process all data locally, and what that means for your workflow security.

Read articlearrow_forward
Free Online Converters | OpenFormatter | OpenFormatter