Yes, all conversion happens locally in your browser. No data is sent to servers — your files never leave your machine. This makes the tool safe for sensitive business data and personal information.

Which formats are supported?

The tool supports CSV, JSON, Markdown, HTML, plain text, YAML and XML. You can convert between all these formats in both directions — e.g. JSON to CSV and CSV to JSON.

Does the tool handle large files?

Yes, since conversion happens locally in the browser, performance depends on the machine capacity. Most machines handle files up to 10-50 MB without problems. For extremely large files we recommend splitting into smaller batches.

Does the tool preserve special characters and encoding?

Yes, the tool handles UTF-8 encoding correctly, including Norwegian characters (ae, oe, aa), emojis and other special characters. All characters are preserved correctly through the conversion.

Toolsscout

File Converter Basic

What it does

Simple file conversion between common formats — text, CSV, JSON, Markdown and more.

Files come in the wrong format — and you need a different tool for each conversion

In a typical workday you handle files in many formats — CSV from spreadsheets, JSON from APIs, Markdown from documentation, HTML from websites and plain text from emails. When you need to convert between these formats, you either need to find a specialized tool for each conversion, write a script or do it manually. The result is wasted time and risk of errors.

Each format requires its own tool — you use one tool for CSV-to-JSON, another for Markdown-to-HTML, and a third for text-to-CSV, which is inefficient and fragmented
Online conversion tools are full of ads and privacy issues — many free tools upload your files to unknown servers and show annoying advertisements
Manual conversion is error-prone — converting formats by hand introduces errors, especially with special characters, character encoding and structured data
Developers need to write one-off scripts for simple conversions — which takes 10-15 minutes for something that should take 10 seconds

One tool for all common file conversions — fast, private and ad-free

File Converter Basic converts between all common text-based file formats in your browser — without uploading files to any server. Supports conversion between CSV, JSON, Markdown, HTML, plain text, YAML and XML. Everything happens locally in the browser, so your data stays private and conversion is instant.

All formats in one tool: convert between CSV, JSON, Markdown, HTML, plain text, YAML and XML without switching between different tools
Local processing: all conversion happens in your browser — no files are uploaded to servers, so sensitive data stays private
Instant results: paste data or upload a file and get the result converted instantly — no waiting, no registration
Intelligent format detection: the tool recognizes the input format automatically so you only need to choose the output format

Features

Broad format support: convert between CSV, JSON, Markdown, HTML, plain text, YAML and XML — the most common text-based formats in daily use
Automatic format detection: the tool identifies the input format automatically based on the content — so you do not need to specify it manually
Preview: see the converted result formatted and color-coded before downloading — with error highlighting if something went wrong in the conversion
Private and secure: all conversion happens locally in the browser — no data is sent to servers, perfect for sensitive business data and personal information

How it works

Paste data or upload a file — the tool recognizes the format automatically and displays it in the input field with syntax highlighting
Choose the output format you need — CSV, JSON, Markdown, HTML, plain text, YAML or XML — and see the result converted instantly
Copy the result to your clipboard or download it as a file — ready to use in your application, database or document

Use cases

Developers who need quick conversion between JSON and YAML for configuration files, or between CSV and JSON for data processing
Content producers converting Markdown documentation to HTML for website publishing, or HTML back to Markdown for editing
Data analysts converting datasets between CSV, JSON and XML for use in different analysis tools and visualization libraries

Why use File Converter Basic?

File conversion is one of those tasks that seems trivial but takes surprisingly much time when done manually or with fragmented tools. Instead of Googling "CSV to JSON converter", finding a tool, uploading the file and hoping it works — you do everything in one tool in seconds.

Privacy is a big advantage. Most online conversion tools upload your files to unknown servers — which is problematic for sensitive data. File Converter Basic does everything locally in the browser, so your data never leaves your machine.

For developers and data analysts the tool is a daily time saver. Instead of writing a Python script to convert a JSON file to CSV, or opening a spreadsheet to export to another format, you do the conversion in seconds with one tool.

FAQ

Is my data safe?: Yes, all conversion happens locally in your browser. No data is sent to servers — your files never leave your machine. This makes the tool safe for sensitive business data and personal information.
Which formats are supported?: The tool supports CSV, JSON, Markdown, HTML, plain text, YAML and XML. You can convert between all these formats in both directions — e.g. JSON to CSV and CSV to JSON.
Does the tool handle large files?: Yes, since conversion happens locally in the browser, performance depends on the machine capacity. Most machines handle files up to 10-50 MB without problems. For extremely large files we recommend splitting into smaller batches.
Does the tool preserve special characters and encoding?: Yes, the tool handles UTF-8 encoding correctly, including Norwegian characters (ae, oe, aa), emojis and other special characters. All characters are preserved correctly through the conversion.

Try File Converter Basic free