大小写、重复行、换行和计数。
JSON Tools
Format, edit, stringify, unstringify, escape, and convert JSON in your browser—no upload required. Pick the tool that matches your task: pretty-printing, parsing quoted strings, or turning CSV into JSON.
Format and inspect JSON
Use the JSON Formatter to pretty-print or minify a document. Open the JSON Editor when you need tree and table views, repair, compare, or schema validation. Both tools keep work in this tab.
Strings inside JSON
JSON Stringify wraps plain text as a quoted JSON string. JSON Unstringify parses the output of JSON.stringify back to readable text. JSON Escape edits characters inside a string without parsing the whole value.
Convert between formats
CSV to JSON turns spreadsheet rows into arrays of objects. JSON to YAML helps when a config file needs to move between formats. Each page explains what it does and what it does not attempt.
Tools in this category
JSON Formatter
Pretty-print messy JSON, catch syntax issues, or minify for production—all in one free online tool.
JSON Editor
Edit JSON in dual tree, text, and table panes: repair, transform, compare, validate with a schema, and import CSV—fully local.
JSON Stringify
Paste plain text, get a quoted JSON string with escapes.
JSON Unstringifier
Turn a JSON.stringify() result back into readable text, or stringify text for embedding in JSON.
JSON Escape / Unescape
Turn raw text into safe JSON strings or reverse escaped JSON.
CSV to JSON Converter
Turn spreadsheet-style CSV into JSON instantly.
JSON to CSV Converter
Turn an array of JSON objects into spreadsheet CSV, or CSV rows back into JSON, in the browser.
JSON to YAML Converter
Convert JSON to YAML in your browser.
Frequently asked questions
JSON Formatter or JSON Editor—which should I use?
The formatter is fastest for one-box beautify or minify. The editor adds tree/table modes, repair, transforms, compare, and schema validation.
JSON Stringify vs JSON Unstringify?
Stringify wraps text as a JSON string value. Unstringify parses an already-quoted JSON.stringify result back to text. Unstringify also includes a stringify mode for the reverse.
Is my JSON uploaded to a server?
These tools run in your browser after the page loads. Copy or download when you need to share output elsewhere.
浏览 Case Modify
Case Modify 提供免费的浏览器工具：大小写转换、代码格式化、随机生成器和单位换算。页面加载后，转换在这台设备上完成。
机器可读摘要: llms.txt, llms-full.txt, agents.txt.