Fast, browser-based converters for structured data, encodings, and content formats with a consistent UI.
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CSV to JSON
Turn rows and columns into structured JSON objects.
File & Data Tools
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JSON to CSV
Export object arrays into spreadsheet-ready CSV format.
File & Data Tools
Data JSON Formatter
Format raw JSON inside the data conversion workspace.
File & Data Tools
Base64 Encoder / Decoder
Free online Base64 Encoder and Decoder. Encode or decode text, JSON, and CSV to Base64 instantly — including Base64 to CSV and CSV to Base64 conversions. All processing happens in your browser.
File & Data Tools
URL Encoder / Decoder
Escape or decode URL strings without leaving the page.
File & Data Tools
HTML Entities
Convert text to HTML entities and decode them back.
File & Data Tools
Markdown to HTML
Preview quick markdown-style content as HTML output.
File & Data Tools
Free Online File & Data Converters
Convert between different file formats and data structures effortlessly. Whether you need to turn CSV into JSON for an API, or encode text into Base64, our file tools are designed for speed and privacy.
How to Use
Paste your data or upload a file into the input area. Choose your desired action (for example, 'CSV to JSON'). The converted data appears instantly, ready to copy or download.
Who Is This For?
1
Data Analysts
Convert large datasets from CSV to workable JSON formats.
2
Developers
Encode strings to Base64 or debug file contents quickly.
Key Features
CSV to JSON
Transform spreadsheet data into structured JSON objects instantly.
Base64 Utility
Encode images or text to Base64 strings and decode them instantly.
Privacy Focused
All processing happens in your browser. Your data is never sent to any server.
Frequently Asked Questions
Yes. All UseDaily file and data conversion tools are completely free to use with no account required.
No. All file processing happens locally in your browser. Your data never leaves your device.
UseDaily supports CSV to JSON, JSON to CSV, JSON formatting, Base64 encoding/decoding, URL encoding/decoding, HTML entities, and Markdown to HTML.
Yes. The CSV to JSON converter handles large files in the browser without size limits imposed by upload restrictions.