Data Conversion Tools for JSON, CSV, XML and YAML
Move data between formats for APIs, spreadsheets, imports and debugging. Start with the source and target format that match your workflow.
Choose a tool
39 browser-based tools are available in this collection. Open a tool to see its input, output and current size limit.
Free Online JSON to CSV Converter
JSON to CSV Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online JSON to Excel Converter
JSON to Excel Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to SQL Converter
JSON to SQL Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
JSON to YAML Converter
JSON to YAML Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to XML Converter
JSON to XML Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
JSON to C Converter
JSON to C Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online JSON to String Converter
JSON to String Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to Table Converter
JSON to Table Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to TypeScript Converter
JSON to TypeScript Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to Dart Converter
JSON to Dart Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to HTML Converter
JSON to HTML Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to PDF Converter
JSON to PDF Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
CSV to JSON Converter
CSV to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online XML to JSON Converter
XML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
YAML to JSON Converter
YAML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online String to JSON Converter
String to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online Excel to JSON Converter
Excel to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online HTML to JSON Converter
HTML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Base64 Encoder and Decoder
Base64 encode/decode
URL Encoder and Decoder
URL encode/decode
Free Online Epoch Timestamp Converter
Unix timestamp tool
Browser-only tools
SRT to VTT Converter
Convert SubRip subtitle files to WebVTT subtitles in your browser.
VTT to SRT Converter
Convert WebVTT subtitles to SubRip subtitles without uploading the file.
CSV to Markdown Converter
Turn CSV data into a clean Markdown table in your browser.
Markdown Table to CSV
Convert a Markdown table into CSV text locally in your browser.
Query String to JSON
Parse URL query parameters into readable JSON without sending the URL anywhere.
JSON to Query String
Convert a flat JSON object into an encoded URL query string in your browser.
JSONPath Extractor
Extract values from JSON with common JSONPath expressions in your browser.
JSONL to CSV Converter
Convert object-based JSON Lines into CSV locally in your browser.
CSV Normalizer
Detect CSV delimiters, normalize line endings and remove a UTF-8 BOM in your browser.
XML to CSV Converter
Convert repeated XML child elements into CSV rows in your browser.
Subtitle to Text Converter
Remove subtitle numbering and timestamps from SRT or VTT files in your browser.
Subtitle Timing Shifter
Shift SRT or VTT subtitle timestamps forward or backward in your browser.
Remove Image Metadata
Re-encode an image in your browser to remove common EXIF and GPS metadata.
Favicon Generator
Create common PNG favicon and web app icon sizes from an image in your browser.
robots.txt Generator
Build a simple robots.txt file and sitemap URL list in your browser.
Cron Expression Builder
Build and explain common five-field cron expressions in your browser.
JSON Flatten and Unflatten
Flatten nested JSON into paths or rebuild a nested object in your browser.
Duplicate Lines Remover
Remove duplicate lines, trim whitespace and sort text locally in your browser.
Privacy-first developer workflows
Supported input is processed in the browser, so source data does not need to be uploaded to a server. Limits vary by tool and browser; the tool page shows the relevant behavior before you start.
How to choose the right tool
Use formatters and beautifiers when code is difficult to read, validators when you need to find syntax problems, and converters when another system expects a different data structure. For production bundles, use a minifier only after reviewing the readable source and testing the result.
Bookmark this collection for repeat debugging, API inspection, configuration review and data-cleanup tasks. Every tool links to adjacent workflows so you can move from validation to formatting or conversion without returning to the home page.