Free online data tools

Format, validate, convert, filter, encode, and generate structured data privately without uploads.

Data tool

JSON Formatter

Validate, inspect, recursively sort, and format JSON or JSON Lines.

Data tool

JSON Minifier

Validate and minify standard JSON or JSON Lines while reporting bytes saved.

Data tool

XML Formatter

Validate and format XML while preserving namespaces, comments, CDATA, and text content.

Data tool

YAML to JSON

Safely parse one or more YAML documents and convert them to predictable JSON.

Data tool

CSV to JSON

Parse CSV, TSV, or custom-delimited data and convert it to arrays or objects.

Data tool

JSON to CSV

Convert JSON objects or arrays to safe deterministic CSV with optional flattening.

Data tool

Select CSV Columns

Select, reorder, and rename CSV columns with an accessible preview and export.

Data tool

Remove CSV Duplicates

Remove duplicate CSV rows using entire rows or selected key columns.

Data tool

Filter CSV Rows

Filter CSV rows with typed text, number, date, boolean, and regex rules.

Data tool

Convert CSV Delimiter

Convert parsed CSV among comma, semicolon, tab, pipe, and custom delimiters.

Data tool

Base64

Encode or validate and decode UTF-8 text and local files using standard or URL-safe Base64.

Data tool

URL Encoder

Encode and decode URI components, full URIs, and form URL-encoded text.

Data tool

UUID Generator

Generate cryptographically secure RFC 4122 UUID v4 values in several output formats.

Data tool

Timestamp Converter

Convert seconds, milliseconds, and microseconds between Unix timestamps and dates.

Format JSON, convert CSV, and encode data

Format and validate JSON, minify JSON files, format XML, or convert YAML to predictable JSON. The CSV to JSON converter handles CSV, TSV, and custom delimiters, while the related JSON to CSV and column tools help prepare tabular exports.

Other utilities encode and decode Base64 or URLs, generate secure UUID v4 values, and convert Unix timestamps in seconds, milliseconds, or microseconds. Parsing and conversion stay on this device after the static page loads; no file or pasted value is sent to a processing API.