Data & Code

Parse user agent strings locally in your browser to identify browser, OS, device, engine, and CPU details.

Parse URLs into components and build URLs from individual components. Bidirectional URL analysis and construction tool.

Validate, format and highlight JSON data.

本地 json-schema-generator 思路，在浏览器本地通过现有的 JSON 数据快速生成对应的 JSON Schema，支持多种 Draft 规范及高级配置。

本地 json-schema-validator 思路，在浏览器本地通过 JSON Schema 严格验证 JSON 数据，支持多种 Draft 规范及全面格式校验。

Format JavaScript, TypeScript, JSON, HTML, CSS, Markdown, YAML, and more locally in your browser with Prettier.

Generate TypeScript types from OpenAPI 3.0 / 3.1 YAML or JSON documents locally in your browser with common codegen options.

Generate syntax-highlighted code screenshots locally in your browser and export them as SVG, PNG, JPG, or HTML.

Format SQL locally in your browser and check for common issues like SELECT *, unsafe updates or deletes, and missing semicolons.

Convert cURL commands locally in your browser into JavaScript, Node.js, Python, Go, PHP, HTTP, JSON, and more.

Convert docker run commands locally in your browser into docker-compose config and flag unsupported options.

Test JSONPath queries locally in your browser and inspect matched values and paths.

Test JMESPath queries locally in your browser and inspect the returned results.

Convert JSON to YAML locally in your browser with copy and download support.

Convert JSON to TOML locally in your browser with nested tables and array-of-table output.

Convert TOML to JSON locally in your browser with support for key-value pairs, tables, and arrays of tables.

Convert YAML to TOML locally in your browser with nested tables and array-of-table output.

Convert TOML to YAML locally in your browser with support for key-value pairs, tables, and arrays of tables.

Convert JSON to XML locally in your browser with support for common attribute and text-node mappings.

Convert JSON object arrays to CSV locally in your browser with delimiter, header, and formula-escaping options.

Convert CSV to JSON locally in your browser with header parsing, type detection, and empty-line handling.

Convert XML to JSON locally in your browser with control over attributes, text nodes, and array output.

Convert YAML to JSON locally in your browser with copy and download support.

Quickly generate .gitignore templates for different languages and frameworks.

Build robots.txt visually with multiple user-agent groups, Allow / Disallow rules, sitemap lines, and advanced options.

Generate sitemap.xml or sitemapindex files with optional image, video, and news extensions.

Convert Unix file permissions between numeric and symbolic notation locally in your browser, with a linked checkbox matrix and ready-to-copy chmod command.

Generate single or batch UUID v4 values locally in your browser with multiple output formats.

Decode UUID details locally in your browser, including version, variant, Base64, integer form, and v1 timestamp data.

Generate NanoID values locally in your browser by length, charset, and batch size.

Generate lexicographically sortable ULIDs locally in your browser and inspect the embedded timestamp.