About Us.

What is jsontofile.com?

jsontofile.com is a free online conversion tool that transforms JSON data into multiple file formats — CSV, Excel, XML, YAML, and more — and back again. Whether you're a developer working with API responses, a data analyst cleaning datasets, or anyone who needs to convert structured data between formats, we make it fast, easy, and private.

Why We Built This

Most online conversion tools require you to upload your files to their servers. This creates privacy risks, imposes file size limits, and often requires sign-ups or paid plans. We built jsontofile.com differently: everything runs in your browser. Your data never leaves your device. No server processing means no limits, no queues, and no privacy concerns.

How It Works

Paste your data into the input area or drag and drop a file. Click Convert. The conversion happens instantly using battle-tested open-source libraries (SheetJS for Excel, PapaParse for CSV, js-yaml for YAML, fast-xml-parser for XML) running directly in your browser's JavaScript engine. Copy the result or download it as a file.

Our Principles

• Privacy first — client-side processing means your data is yours alone.
• No limits — convert as much as you need, no file size caps, no daily quotas.
• No signup — start converting immediately, no account required.
• Free forever — no paywalls, no premium tiers, no surprise charges.
• Open source friendly — built with open-source libraries and transparent about our technology.

Supported Formats

We support 10 conversion tools covering bidirectional conversion between JSON, CSV, Excel (XLSX/XLS), XML, and YAML. Every converter handles nested data structures, preserves field names, and produces clean, standards-compliant output.