Free Online JSON & Data Conversion Tools

Generate compact deterministic JSON using UTF-16 key ordering and ECMAScript number serialization, with duplicate-key checks.

Select and reorder named CSV columns while preserving quoted commas, multiline cells, leading zeros and header spelling.

Inspect a CSV column for empty, distinct, numeric and nonnumeric values, with sum, mean, median and range for finite decimal numbers.

Compare CSV exports by record ID and report added, removed and changed rows regardless of row or column order.

Convert comma, semicolon or tab-separated data while preserving quoted cell contents and optional UTF-8 BOM output.

Remove duplicate CSV records by selected key columns or whole-row identity, keeping the first or last occurrence with explicit matching rules.

Join two CSV tables by exact key columns using inner, left or full joins, with duplicate-key checks.

Append two CSV tables vertically, matching reordered headers or combining different schemas with a union of columns.

Build a pivot table from CSV with row and column groups and count, sum or average aggregation.

Filter parsed CSV records by exact text, substring or numeric comparisons without breaking quoted and multiline cells.

Convert a rectangular CSV table into escaped semantic HTML with an optional caption and header row.

Convert CSV events with UTC start and end timestamps into an importable ICS calendar file.

Parse CSV, TSV, or semicolon-separated data into clean JSON with intelligent type inference.

Convert CSV or TSV rows directly to NDJSON records while preserving quoted fields, line breaks and numeric-looking text.

Convert CSV, TSV, or semicolon-separated data to GitHub-flavored Markdown tables with aligned columns.

Convert contact rows with givenName, familyName, email, phone and organization columns into a multi-contact VCF file.

Convert spreadsheet CSV rows into well-formed XML records with escaped values and column names.

Convert spreadsheet rows into YAML records for configuration files, fixtures and readable data handoffs.

Convert a wide CSV table into long-form records while preserving selected identifier columns and original cell text.

Parse .env files and convert between .env, JSON, and YAML for safe secret management.

Export GeoJSON features to CSV with properties, geometry type and coordinates for spreadsheet review.

Extract an HTML table into a JSON array of objects using the first row as column headings.

Convert sectioned INI configuration to JSON while preserving string values and catching duplicate keys.

Quick JS re-indenter with configurable indentation. Preserves literals and comments.

Strip comments and whitespace from JavaScript. Preserves strings, templates, and regex literals.

Run JMESPath projections, filters and built-in functions against a JSON document and download the selected result.

Turn JSON arrays into CSV spreadsheets and parse CSV back to JSON with type inference.

Convert JSON arrays to formatted HTML tables with proper thead/tbody structure.

Generate well-formed XML from JSON and parse XML tags back to JSON objects.

Convert JSON to clean YAML and back. Handles nested objects, arrays, and special strings.

Split a JSON array into fixed-size batches for API requests, migrations and test fixtures while preserving order.

Remove duplicate JSON records by a JSON Pointer key, keeping the first or last occurrence with exact typed matching.

Filter JSON array values with a JSON Pointer field, typed equality, substring, numeric or presence tests.

Group JSON records by a JSON Pointer field and keep typed group keys, counts and original records.

Stably sort JSON objects by a numeric or string property. Keep missing and null values last in either sort direction.

Convert a JSON array into one JSON object per line for log pipelines, bulk imports and streaming tools.

Index an array of JSON records by a string or safe integer field, with explicit duplicate-key handling.

Semantic structural JSON diff ignoring whitespace and key order with dotted path output.

Flatten nested JSON into JSON Pointer paths and restore the original structure, including arrays and empty containers.

Format or minify JSON files up to 100 MB right in your browser with drag-and-drop upload.

Recursively convert JSON property names to camelCase, snake_case, kebab-case or PascalCase with collision detection.

Rename JSON object keys using an explicit mapping, optionally across nested objects, while rejecting collisions and preserving values.

Sort JSON object keys alphabetically or reverse with recursive deep sorting for nested objects.

Convert newline-delimited JSON objects into a CSV spreadsheet while keeping one record per line.

Combine newline-delimited JSON records into a standard JSON array for APIs, editors and data imports.

Apply RFC 7396 merge patches to JSON: update nested objects, remove properties with null and replace arrays atomically.

Apply RFC 6902 add, remove, replace, move, copy and test operations to a JSON document, with pointer validation and atomic results.

Extract a precise value from JSON using RFC 6901 pointers, including escaped slash and tilde keys and array indexes.

Convert records with latitude and longitude columns into a GeoJSON Point FeatureCollection with preserved properties.

Validate JSON against Draft 7 or Draft 2020-12 schemas and inspect precise instance paths without modifying the document.

Create an Excel workbook from a JSON array of flat records with typed numbers, booleans and literal text cells.

Convert a JSON array of objects into a readable Markdown table for GitHub, documentation and project notes.

Encode JSON values as a downloadable MessagePack binary file with finite-number and depth checks.

Convert a JSON array to newline-delimited JSON or turn JSON Lines back into a formatted array.

Convert JSON configuration objects into TOML tables with typed tables and explicit checks for unsupported null values.

Validate JSON syntax with detailed error messages, line numbers, and structure statistics.

Convert JSON5 comments, trailing commas, unquoted keys and single-quoted strings into strict formatted JSON.

Create GitHub-flavored Markdown tables with a visual editor. Set alignment, add rows and columns.

Turn a Markdown table into spreadsheet-ready CSV while keeping cell text and column order.

Compress JSON to a single line or beautify it back with one click and instant size savings.

Convert between TOML and JSON for Cargo.toml, pyproject.toml, Hugo, and Zola configs.

Convert TOML configuration into YAML for Kubernetes, GitHub Actions and other YAML-based tools.

Swap CSV rows and columns with correct quoting for multiline cells, empty values and embedded delimiters.

Convert tab-separated spreadsheet data to JSON and export an array of objects as TSV.

Pretty-print minified XML — SOAP responses, RSS feeds, SVG, OpenXML, Android manifests.

Convert JSON to an XML plist or parse supported XML plist values into JSON without fetching its DTD.

Extract repeating XML records into CSV for spreadsheets and data imports.

Preview repeating XML records as a portable HTML table for reports, documents and web pages.

Convert XML to JSON using the browser's native DOMParser. SOAP, RSS, SVG, OpenXML.

Evaluate XPath 1.0 expressions against XML with an explicit namespace map and structured node or scalar results.

Pretty-print or minify YAML config files with configurable indentation for Kubernetes, Docker, Ansible.

Flatten a YAML list of records into CSV for Excel, Google Sheets and data imports.

Parse YAML config files (Kubernetes, Actions, docker-compose, Ansible) into clean JSON.

Convert common YAML configuration and record data into TOML for applications that use TOML settings.