JSON Converter

JSON Converter

Convert JSON to various formats instantly

Input JSON 0 chars
Converted Output 0 chars

Conversion Formats

XSLT Transformation

0 B
Input Size
0 B
Output Size
0ms
Conversion Time
JAVA
Current Format
JAVA Format: Converts JSON to Java classes with getters and setters. Perfect for Java developers who need to create POJOs from JSON data.
Converted content copied to clipboard!
`; return html; } // Beautify JSON function beautifyJson() { try { const jsonData = JSON.parse(inputJson.value); inputJson.value = JSON.stringify(jsonData, null, 2); showToast("JSON beautified successfully!"); updateCounts(); hideError(); } catch (error) { showError("Invalid JSON: " + error.message); } } // Download file function function downloadFile(content, filename, mimeType) { const blob = new Blob([content], { type: mimeType }); const link = document.createElement('a'); link.href = URL.createObjectURL(blob); link.download = filename; document.body.appendChild(link); link.click(); document.body.removeChild(link); setTimeout(() => { URL.revokeObjectURL(link.href); }, 100); } // Generate filename based on format and timestamp function generateFilename() { const timestamp = new Date().toISOString().replace(/[:.]/g, '-').split('T')[0]; const extension = formatExtensions[currentFormat] || '.txt'; return `json-converted-${timestamp}-${Date.now()}${extension}`; } // Download converted result function downloadConvertedResult() { const content = outputContent.value.trim(); if (!content) { showToast("No content to download"); return; } const filename = generateFilename(); const mimeType = formatMimeTypes[currentFormat] || 'text/plain'; downloadFile(content, filename, mimeType); showToast("File downloaded successfully!"); } // Main conversion function function convertJson() { const startTime = performance.now(); const jsonString = inputJson.value.trim(); if (!jsonString) { showError("Please enter JSON to convert"); return; } try { const jsonData = parseJson(jsonString); let result; switch (currentFormat) { case 'java': result = jsonToJava(jsonData); break; case 'xml': result = jsonToXml(jsonData); break; case 'yaml': result = jsonToYaml(jsonData); break; case 'csv': result = jsonToCsv(jsonData); break; case 'tsv': result = jsonToTsv(jsonData); break; case 'text': result = jsonToText(jsonData); break; case 'excel': result = jsonToExcel(jsonData); break; case 'html': result = jsonToHtml(jsonData); break; default: result = jsonToJava(jsonData); } outputContent.value = result; // Update conversion time const endTime = performance.now(); conversionTime.textContent = Math.round(endTime - startTime) + 'ms'; } catch (error) { showError(error.message); } updateCounts(); } // Show error message function showError(message) { inputError.textContent = message; inputError.style.display = 'block'; setTimeout(() => { inputError.style.display = 'none'; }, 5000); } function hideError() { inputError.style.display = 'none'; } // Show toast notification function showToast(message) { toast.innerHTML = ` ${message}`; toast.style.display = 'flex'; setTimeout(() => { toast.style.display = 'none'; }, 3000); } // Copy to clipboard function copyToClipboard() { if (!outputContent.value.trim()) { showToast("No content to copy"); return; } outputContent.select(); outputContent.setSelectionRange(0, 99999); try { navigator.clipboard.writeText(outputContent.value); showToast("Converted content copied to clipboard!"); } catch (err) { // Fallback for older browsers document.execCommand('copy'); showToast("Content copied to clipboard!"); } } // Copy output to clipboard (from output button) function copyOutputToClipboard() { if (!outputContent.value.trim()) { showToast("No output to copy"); return; } outputContent.select(); outputContent.setSelectionRange(0, 99999); try { navigator.clipboard.writeText(outputContent.value); showToast("Output copied to clipboard!"); } catch (err) { document.execCommand('copy'); showToast("Output copied to clipboard!"); } } // Validate JSON function validateJson() { const jsonString = inputJson.value.trim(); if (!jsonString) { showToast("Please enter JSON to validate"); return; } try { JSON.parse(jsonString); showToast("JSON is valid!"); hideError(); } catch (error) { showError("Invalid JSON: " + error.message); } } // Clear all fields function clearAll() { inputJson.value = ''; outputContent.value = ''; xsltContent.value = ''; conversionTime.textContent = '0ms'; updateCounts(); showToast("All fields cleared"); hideError(); } // Event Listeners inputJson.addEventListener('input', updateCounts); outputContent.addEventListener('input', updateCounts); convertBtn.addEventListener('click', convertJson); copyBtn.addEventListener('click', copyToClipboard); downloadBtn.addEventListener('click', downloadConvertedResult); clearBtn.addEventListener('click', clearAll); validateBtn.addEventListener('click', validateJson); beautifyBtn.addEventListener('click', beautifyJson); // Output action buttons outputCopyBtn.addEventListener('click', copyOutputToClipboard); outputDownloadBtn.addEventListener('click', downloadConvertedResult); // Auto-convert on format change if there's content formatBtns.forEach(btn => { btn.addEventListener('click', function() { if (inputJson.value.trim()) { setTimeout(convertJson, 100); } }); }); // Initial conversion convertJson(); });

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About

JSON Converter was created to solve a common challenge faced by developers and data professionals: the need to work with JSON data across different systems and formats. JSON has become the universal language of web APIs and data interchange, but often needs to be converted to other formats for specific use cases.

We built a tool that makes these conversions effortless, accurate, and completely secure. Unlike many online converters, our tool processes all data locally in your browser, ensuring your sensitive information never leaves your computer.

How to Use

Access the Tool

Open the JSON Converter in any modern browser

No installation or registration required

 

Input Your JSON

Paste your JSON data into the left textarea

Use the sample JSON provided as a starting point

Or type your JSON directly

 

Select Conversion Format

Choose from 8 available formats:

  • Java: For Java class generation
  • XML: For XML-based systems
  • YAML: For configuration files
  • CSV: For spreadsheets
  • TSV: For tab-separated data
  • Text: For human-readable output
  • Excel: For Microsoft Excel
  • HTML: For web display

 

Click “Convert JSON” or press Ctrl+Enter

View converted results in the right panel

Use action buttons to copy or download

Features

JSON to Java Classes: Generate complete Java POJOs with getters/setters

JSON to XML: Convert to well-formed XML with proper escaping

JSON to YAML: Transform to human-readable YAML configuration

JSON to CSV/TSV: Export to spreadsheet-compatible formats

JSON to Text: Create readable text representations

JSON to Excel: Generate Excel-compatible CSV with UTF-8 BOM

JSON to HTML: Build styled HTML tables for web display

Faqs

Is my JSON data secure?

Absolutely! Our converter runs 100% in your browser. Your JSON data never leaves your computer, isn’t uploaded to any server, and isn’t stored anywhere. We use client-side JavaScript processing exclusively.

We support:

  • Standard JSON (RFC 8259)

  • JSON with nested objects and arrays

  • JSON with various data types (strings, numbers, booleans, null)

  • Large JSON files (limited by browser memory)

  • UTF-8 encoded JSON

Yes! Full support for:

  • UTF-8 characters and emojis

  • International characters

  • Special symbols

  • Escaped characters

  • Unicode characters

Extremely accurate. Our conversion algorithms:

  • Maintain data integrity

  • Handle edge cases properly

  • Preserve data types

  • Escape special characters correctly

  • Generate valid output formats

Yes! The CSV conversion:

  • Extracts headers from array objects

  • Creates proper CSV rows

  • Handles missing fields

  • Escapes commas and quotes

  • Produces valid CSV format

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