# JSON All-in-One > Open, search, format, compare, query, chart, and export JSON, JSONC, NDJSON, and NDJSONC locally with JSONPath, JQ, schema extraction, and code generation. JSON All-in-One is a browser extension. JSON All-in-One is designed for large documents, subject to browser and device limits. ## Tools - [Free Online JSON Tools: Query, Compare, Convert](https://json-all-in-one.dev/en/tools/): Use free online JSON tools for JQ, JSONPath, diff, extraction, charts, code generation, and conversion. Pasted or opened JSON is processed locally in the browser. - [Free JSON Compare Online: Find Data Differences](https://json-all-in-one.dev/en/tools/json-diff/): Compare two JSON documents online for free. Added, removed, and changed values are found locally in the browser without uploading your JSON to our servers. - [JSON to Single Line: Free Online JSON One Liner](https://json-all-in-one.dev/en/tools/json-to-single-line/): Turn JSON into one line online for free. Make a compact JSON one liner without rewriting strings or numbers. JSONC comments are removed; your file stays in the browser. - [JSON Minify Online: Free JSON Minifier](https://json-all-in-one.dev/en/tools/json-minify/): Minify JSON online for free without uploading your file. Remove layout whitespace and JSONC comments with a privacy-first browser tool; no gzip or ZIP is implied. - [Free Online JSON Code Generators](https://json-all-in-one.dev/en/tools/codegen/): Choose a free browser-based JSON model generator for C\#, Go, Java, Kotlin, Python, Rust, or TypeScript. Pasted or opened JSON is processed locally. - [Free JSON to C\# record Generator Online](https://json-all-in-one.dev/en/tools/codegen/csharp/): Generate a C\# record from JSON online for free using a order receipt example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to Go struct Generator Online](https://json-all-in-one.dev/en/tools/codegen/go/): Generate a Go struct from JSON online for free using a sensor reading example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to Java record Generator Online](https://json-all-in-one.dev/en/tools/codegen/java/): Generate a Java record from JSON online for free using a shipment response example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to Kotlin data class Generator Online](https://json-all-in-one.dev/en/tools/codegen/kotlin/): Generate a Kotlin data class from JSON online for free using a profile card example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to Python dataclass Generator Online](https://json-all-in-one.dev/en/tools/codegen/python/): Generate a Python dataclass from JSON online for free using a service response example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to Rust struct Generator Online](https://json-all-in-one.dev/en/tools/codegen/rust/): Generate a Rust struct from JSON online for free using a feature manifest example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free JSON to TypeScript interface Generator Online](https://json-all-in-one.dev/en/tools/codegen/typescript/): Generate a TypeScript interface from JSON online for free using a paginated api response example. Paste or open JSON; output is inferred locally in the browser and your JSON is not uploaded to our servers. - [Free Online JSON Converters](https://json-all-in-one.dev/en/tools/export/): Convert JSON online to CSV, TSV, Markdown, NDJSON, Properties, TOML, XML, YAML, or HTML table output with local browser processing. - [Free JSON to CSV Converter Online](https://json-all-in-one.dev/en/tools/export/csv/): Free online JSON to CSV conversion for inventory spreadsheet. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to TSV Converter Online](https://json-all-in-one.dev/en/tools/export/tsv/): Free online JSON to TSV conversion for support queue. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to Markdown table Converter Online](https://json-all-in-one.dev/en/tools/export/markdown/): Free online JSON to Markdown table conversion for release checklist. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to NDJSON / JSONL Converter Online](https://json-all-in-one.dev/en/tools/export/ndjson/): Free online JSON to NDJSON / JSONL conversion for event stream. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to Properties Converter Online](https://json-all-in-one.dev/en/tools/export/properties/): Free online JSON to Properties conversion for application settings. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to TOML Converter Online](https://json-all-in-one.dev/en/tools/export/toml/): Free online JSON to TOML conversion for build configuration. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to XML Converter Online](https://json-all-in-one.dev/en/tools/export/xml/): Free online JSON to XML conversion for purchase order. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to YAML Converter Online](https://json-all-in-one.dev/en/tools/export/yaml/): Free online JSON to YAML conversion for deployment configuration. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to HTML table Converter Online](https://json-all-in-one.dev/en/tools/export/html-table/): Free online JSON to HTML table conversion for audit report. Paste or open JSON, preview the result, and download output created locally in the browser without uploading your JSON to our servers. - [Free JSON to Chart Online: Line, Bar and Pie](https://json-all-in-one.dev/en/tools/json-to-chart/): Build a chart from JSON online for free. Paste or open JSON, map fields to line, area, bar, pie, or doughnut charts, and download a PNG without uploading your JSON to our servers. - [Free JQ Online for JSON, JSONC and NDJSON](https://json-all-in-one.dev/en/tools/jq-online/): Run JQ online for free on JSON, JSONC, NDJSON, or NDJSONC. Pasted or opened input is processed in the browser worker and is not uploaded to our servers. - [Free JSONPath Online Evaluator](https://json-all-in-one.dev/en/tools/jsonpath-online/): Evaluate RFC 9535 JSONPath online for free, then copy matched values or canonical paths. Your pasted or opened JSON stays in the browser and is not uploaded to our servers. - [Free Email Extractor from JSON Online](https://json-all-in-one.dev/en/tools/extract-emails-from-json/): Extract email addresses from JSON online for free. Paste, open, or drop JSON; keys and values are scanned locally in the browser and not uploaded to our servers. - [Free Link Extractor from JSON Online](https://json-all-in-one.dev/en/tools/extract-links-from-json/): Extract HTTP and HTTPS links from JSON online for free. The browser scans pasted or opened JSON locally, opens the deduplicated result as JSON, and can export it to CSV. - [Free Website Extractor from JSON Online](https://json-all-in-one.dev/en/tools/extract-websites-from-json/): Extract websites, hostnames, and domain-like values from JSON online for free without fetching them. Pasted or opened JSON stays in the browser and is not uploaded to our servers. - [Extract Images from JSON: Online JSON Image Downloader](https://json-all-in-one.dev/en/tools/extract-images-from-json/): Extract images from JSON online: find nested HTTP(S) image URLs and download accessible image files in a ZIP. Local JSON processing; remote image hosts may require CORS. ### Agent workflows - [JSON Task Workflows: Inputs, Operations, Expected Output](https://json-all-in-one.dev/en/agents/): Choose a JSON task workflow with downloadable synthetic inputs, exact operations, and expected outputs for JQ, JSONPath, diff, code generation, and extraction. - [Filter a JSON API Response with JQ](https://json-all-in-one.dev/en/agents/jq-filter-api-response/): Download a synthetic orders JSON fixture, run the documented JQ filter, and compare the expected JSON output before using the online JQ tool. - [Extract JSON Values with JSONPath](https://json-all-in-one.dev/en/agents/jsonpath-extract-values/): Download an incident JSON fixture, run the documented RFC 9535 JSONPath operation, and compare the expected matched values. - [Compare Two JSON API Snapshots](https://json-all-in-one.dev/en/agents/compare-api-snapshots/): Download two synthetic API snapshots and a compact expected difference summary for a JSON comparison workflow. - [Generate a TypeScript Contract from JSON](https://json-all-in-one.dev/en/agents/json-to-typescript-contract/): Use a synthetic paginated API JSON input, documented TypeScript codegen settings, and the actual expected multi-file output. - [Extract HTTP Links from JSON](https://json-all-in-one.dev/en/agents/extract-links-from-json/): Download a synthetic JSON fixture with nested URLs, run the link extraction workflow, and compare the expected normalized link list. - [Browser-agent workflow control](https://json-all-in-one.dev/en/agents/#browser-agent-workflow): Open the matching tool page and feature-detect its native WebMCP specialist. Attach the user file through input[data-agent-file-input=""] without copying JSON into model context. Call the page's json_aio__execute once with only operation settings (punctuation becomes underscores); it waits for processing and requests the result download. Examples: jq {expression}, codegen_typescript {enumMode:"disabled"}, export_csv {nullValue:"empty"}, chart {chartType,xExpression,yExpression,formats:["html","pdf"]}. Codegen infers its complete input schema inside the website, without a separate inspection call. For queries/charts only, inspect the bounded source shape if field names are unknown. No sourceId, taskId, polling, output-path configuration or content preview is required on the normal path. Verify actual browser download completion; download_requested alone is not a saved-file receipt. Source files stay local to the browser; any data explicitly exposed to a cloud agent enters that provider's context. Use normal UI if native site WebMCP is unavailable. ## Guides [All JSON guides](https://json-all-in-one.dev/en/guides/index.md) ### Open and inspect Read files, compare changes, and keep track of the values that matter. - [Open large JSON files in Chrome](https://json-all-in-one.dev/en/guides/open-large-json-files/index.md): A practical local workflow for inspecting large JSON files in Chrome while choosing operations that fit the data shape. - [How to open JSONL and NDJSON files](https://json-all-in-one.dev/en/guides/open-jsonl-ndjson-files/index.md): Understand JSON Lines and NDJSON, open record streams safely, and query them as an array in JSON All-in-One. - [Compare JSON files and understand the changes](https://json-all-in-one.dev/en/guides/compare-json-files/index.md): Compare two JSON files, find added, removed, and changed paths, and understand how array order affects the diff. - [JSON with comments: working with JSONC files](https://json-all-in-one.dev/en/guides/json-with-comments/index.md): Understand why strict JSON rejects comments, how JSONC differs, and how to inspect commented configuration safely. - [How to open a JSON file](https://json-all-in-one.dev/en/guides/how-to-open-json-file/index.md): Open a JSON file in a text editor, Chrome, or a structured viewer. If Chrome shows raw text, check the extension's local file URL permission. - [Why large JSON numbers change in JavaScript](https://json-all-in-one.dev/en/guides/json-number-precision/index.md): Reproduce JavaScript number rounding, distinguish JSON number tokens from runtime numbers, and choose safer handoff representations. - [How to benchmark a large JSON viewer in Chrome](https://json-all-in-one.dev/en/guides/large-json-viewer-benchmark/index.md): Benchmark a large JSON viewer in Chrome with repeatable fixtures, clearly separated phases, and a documented environment so results can be reproduced and compared. - [Find invisible characters in JSON](https://json-all-in-one.dev/en/guides/detect-invisible-characters-in-json/index.md): Detect zero-width, bidirectional, and control characters in JSON, inspect their code points, and confirm the security findings before the data moves downstream. - [Open GitHub raw JSONC in Chrome](https://json-all-in-one.dev/en/guides/open-github-raw-jsonc/index.md): Open a commented JSON file from GitHub raw in Chrome. See what JSONC, text/plain, and a sandbox CSP mean, with a measured browser-viewer example. ### Query and shape Select the right records, transform them, and build a starting schema. - [How to use JQ: practical JSON filter examples](https://json-all-in-one.dev/en/guides/jq-filter-examples/index.md): Learn how to use JQ with copyable JSON filter examples for nested fields, select, null handling, array transforms, and grouped summaries. - [JSONPath examples for nested objects and arrays](https://json-all-in-one.dev/en/guides/jsonpath-examples/index.md): Learn supported RFC 9535 JSONPath patterns for selecting fields, array items, recursive matches, and filtered records. - [JQ recipes: sort keys and extract nested values](https://json-all-in-one.dev/en/guides/jq-recipes/index.md): Copy ready-to-run jq recipes to sort object keys recursively and extract nested email or HTTP(S) URL values, with complete JSON inputs, outputs, and limitations. - [How to use jq with JSONC](https://json-all-in-one.dev/en/guides/jq-jsonc/index.md): Standard jq cannot read JSONC directly. Learn which JSONC queries work in JSON All-in-One, when the array fast path applies, and how to convert JSONC for jq in a shell. - [Why write another script for an everyday JSON task?](https://json-all-in-one.dev/en/guides/webmcp-json-tools-token-benchmark/index.md): We tested AI-written scripts against browser WebMCP tools for JSON queries, CSV export, TypeScript generation, and charts. See the token counts and try the tools. ### Visualize data Turn paired values and grouped categories into charts you can check against the source. - [How to create a chart from JSON](https://json-all-in-one.dev/en/guides/json-to-chart/index.md): Turn JSON into line, area, bar, pie, or doughnut charts in Chrome. Prepare values with JQ and choose a chart that fits the question your data can answer. - [Build a time series chart from JSON](https://json-all-in-one.dev/en/guides/json-time-series-chart/index.md): Plot S&P 500 dates and index values from JSON. Check ordering, missing observations, units, and source-to-chart pairing before creating a line or area chart. - [Create bar and pie charts from JSON categories](https://json-all-in-one.dev/en/guides/json-bar-pie-charts/index.md): Group JSON records with JQ, compare category totals in a bar chart, and show a checked whole as a pie or doughnut chart using one consistent shipment dataset. ### Code for your stack Turn sample data into models, then review the details for your language. - [Generate code from JSON](https://json-all-in-one.dev/en/guides/json-code-generation/index.md): Choose a JSON-to-code target, understand what sample-derived models can prove, and move from one JSON shape into TypeScript, Python, Java, Kotlin, C\#, Go, or Rust. - [Generate JSON Schema from sample JSON](https://json-all-in-one.dev/en/guides/generate-json-schema/index.md): Turn observed JSON samples into a starting JSON Schema, then review the inferred types, required fields, nulls, and limits. - [Generate TypeScript types from JSON](https://json-all-in-one.dev/en/guides/json-to-typescript/index.md): Generate TypeScript interfaces or classes from JSON, then review nulls, dates, large IDs, and the runtime-validation boundary before using the types. - [Generate Python dataclasses from JSON](https://json-all-in-one.dev/en/guides/json-to-python/index.md): Create Python 3 dataclass models from a JSON sample, then add the explicit loading and coercion code your application actually needs. - [Generate Java classes and records from JSON](https://json-all-in-one.dev/en/guides/json-to-java/index.md): Generate Java POJOs, classes, or records from JSON, review Jackson annotations and numeric/date choices, and keep handwritten application glue separate. - [Generate Kotlin data classes from JSON](https://json-all-in-one.dev/en/guides/json-to-kotlin/index.md): Generate Kotlin data classes or classes from a JSON sample, then review nullability, naming, package layout, and serializer work that remains manual. - [Generate C\# models from JSON](https://json-all-in-one.dev/en/guides/json-to-csharp/index.md): Generate C\# classes or records from JSON. Review nullable fields, snake\_case mapping, decimals, large integers, and System.Text.Json deserialization. - [Generate Go structs from JSON](https://json-all-in-one.dev/en/guides/json-to-go/index.md): Generate Go structs with JSON tags from a sample, then review exported names, pointers, numeric policy, package layout, and decoding behavior. - [Generate Rust structs from JSON](https://json-all-in-one.dev/en/guides/json-to-rust/index.md): Generate Rust structs from JSON, compare plain and Serde output, and verify Cargo dependencies, Option semantics, and deserialization separately. ### Export your way Choose a format and prepare data for spreadsheets, configuration, or documentation. - [Choose a JSON export format](https://json-all-in-one.dev/en/guides/json-export-formats/index.md): Compare CSV, TSV, YAML, TOML, XML, .properties, Markdown, HTML table, and NDJSON exports from JSON before choosing the right guide. - [Convert nested JSON to CSV without uploading it](https://json-all-in-one.dev/en/guides/nested-json-to-csv/index.md): Export nested JSON to CSV locally, shape nested fields into deliberate columns, and avoid spreadsheet surprises with IDs, nulls, and formula-like values. - [Convert JSON to XML with a clear mapping](https://json-all-in-one.dev/en/guides/json-to-xml/index.md): Convert JSON to XML locally and see what happens to the root, arrays, escaped text, invalid element names, nulls, and schema-specific expectations. - [Convert JSON to TSV for spreadsheet handoffs](https://json-all-in-one.dev/en/guides/json-to-tsv/index.md): Need a local JSON to TSV workflow? This guide covers nested columns, tabs and newlines inside cells, plus the import settings worth checking in a spreadsheet. - [Convert JSON to YAML for readable configuration](https://json-all-in-one.dev/en/guides/json-to-yaml/index.md): Convert JSON to YAML locally, then check nested configuration, quoted strings, booleans, nulls, and parser behavior before handoff. - [Convert JSON to TOML for configuration files](https://json-all-in-one.dev/en/guides/json-to-toml/index.md): Turn JSON configuration into TOML tables, arrays, and arrays of tables while understanding null, root, and parser limitations. - [Convert nested JSON to .properties](https://json-all-in-one.dev/en/guides/json-to-properties/index.md): Convert nested JSON to a .properties file, then check the flattened keys, array indexes, escaped values, and the rules of the receiving application. - [Convert JSON to a Markdown table](https://json-all-in-one.dev/en/guides/json-to-markdown-table/index.md): Create Markdown tables from JSON arrays for READMEs, issues, and documentation while handling nested fields, pipes, and multiline cells. - [Convert JSON to an HTML table](https://json-all-in-one.dev/en/guides/json-to-html-table/index.md): Export a JSON array as a readable HTML table report and review saved-artifact behavior, escaping, sorting, and mapping limits. - [Convert a JSON array to NDJSON or JSONL](https://json-all-in-one.dev/en/guides/json-to-ndjson/index.md): Convert a JSON array to NDJSON or JSONL, with one complete record per line and practical checks for escaped newlines and record counts. ## Other resources - [Home](https://json-all-in-one.dev/en/) - [Support & refunds](https://json-all-in-one.dev/en/support/) - [Privacy Policy](https://json-all-in-one.dev/en/privacy/) - [Terms of sale](https://json-all-in-one.dev/en/terms/) - [JSON Test Files: JSONC, NDJSON and Precision Cases](https://json-all-in-one.dev/en/resources/json-test-files/): Download 11 small synthetic JSON, JSONC, NDJSON, and NDJSONC test files with exact byte sizes, SHA-256 hashes, and operation-specific expected results. - [JQ Chrome Extension for JSON Workflows](https://json-all-in-one.dev/en/jq-chrome-extension/): Run JQ where you inspect JSON in Chrome. See a small source-to-result example, format limits, local-file permissions, and when a CLI is a better fit. ### Extension comparisons - [Compare JSON Extensions by Workflow](https://json-all-in-one.dev/en/compare/): Choose a JSON extension by the work you need to do: read an API response, edit, query, compare, chart, or export. Read two sourced product comparisons. - [JSON All-in-One vs JSON Formatter (Callum Locke)](https://json-all-in-one.dev/en/compare/json-all-in-one-vs-json-formatter/): Compare Callum Locke's JSON Formatter with JSON All-in-One for reading API responses and moving on to editing, JQ, comparison, and export. - [JSON All-in-One vs JSON Viewer Pro (Addonise)](https://json-all-in-one.dev/en/compare/json-all-in-one-vs-json-viewer-pro/): A sourced, task-based comparison of two full-featured JSON extensions: formats, queries, editing, charts, export, and code generation.