Data formats
CSV to JSON
Turn tabular CSV into JSON arrays for APIs, scripts, and apps.
CSV is everywhere—exports from spreadsheets, logs, and data dumps. JSON is what most APIs and JavaScript tooling expect. Paste your CSV, choose whether the first row is headers, and copy structured JSON you can drop straight into code or Postman. Need the reverse? Use JSON to CSV on this hub.
Similar tools
Quick links to related utilities—same workflow, different input or output.
FAQs
Why convert CSV to JSON?›
JSON nests cleanly in JavaScript and most HTTP APIs. Moving from rows/columns to objects/arrays makes it easier to merge data in apps, transform it in code, and share it between services.
How are headers handled?›
When “first row is header” is enabled, column names become object keys. Values are taken per row; empty cells become empty strings.
Do you support commas inside fields?›
Yes—standard double-quoted fields can contain commas and escaped quotes, similar to typical RFC-style CSV.
How accurate is the conversion?›
Parsing runs entirely in your browser. For mission-critical pipelines, spot-check edge cases (odd line endings, mixed encodings) in your environment.
Is my file uploaded?›
No. Nothing is sent to Exemplar; the file contents stay in your tab.
What delimiter do you use?›
Comma-separated values. Tab-separated files are better handled with the TSV to JSON tool.
General
Do these tools send my data to Exemplar’s servers?›
By default, conversion and formatting run entirely in your browser. Nothing is uploaded to Exemplar for normal paste-and-transform workflows. Tools that deliberately open an external service (for example, a third-party speed test) are called out on the page.
Do I need an account or install anything?›
No account is required. Everything runs in the browser—there is nothing to install for these utilities. They complement the Exemplar platform but work standalone.
Are these utilities open-source or the same as other sites?›
These pages are built for Exemplar’s audience (developers working with APIs, config, and ops data). Behavior may differ slightly from other online tools; always verify critical output in your own environment.
Are there size or performance limits?›
Very large inputs can slow down or crash the tab—especially for images, huge JSON, or multi‑MB HAR files. For production-scale data, prefer local CLI tools, streaming parsers, or your own pipelines.
Can I use output in production?›
Yes, when you have validated it. Parsers and formatters here aim to be helpful for everyday tasks but are not a substitute for tests, schema validation, or security review where it matters.
Where can I read more about privacy?›
See our Privacy policy at /privacy for how exemplar.dev handles site analytics and general data practices.