Converter Tools
Debug APIs, clean content, format data, and run release checks directly in your browser.
Converters for everyday format swaps: encoding, structured data, color and design units, document and media formats.
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Base64
Encode text or file bytes; decode Base64 text
Encoding
URL Encode / Decode
Compare percent encodings and control decoding layers
Encoding
Color Converter
Convert opaque CSS colors to HEX, RGB, HSL, HSV and CMYK
Color & Design
YAML ↔ JSON
Convert between YAML and JSON
Data Format
JSON ↔ CSV
Convert between JSON arrays and CSV
Data Format
JSON to Excel
Convert JSON objects and arrays to XLSX
Data Format
Markdown → HTML
Convert Markdown to HTML with live preview
Document & Media
Image to Base64
Convert images to Base64 data URLs
Encoding
Text to Binary
Convert text to binary, hex, octal & decimal
Encoding
CSS Unit Converter
Convert px, rem, em, vw, vh and more
Units, Time & Number
Number to Words
Read decimals in English and format Chinese financial amounts
Units, Time & Number
Roman Numeral Converter
Convert standard Roman numerals and integers from 1 to 3999
Units, Time & Number
XML to JSON
Convert XML into structured JSON
Data Format
Delimiter Converter
Convert CSV, TSV, Pipe, and Semicolon formats
Data Format
Color Palette Generator
Generate five RGB shade variants from a hex color
Color & Design
JSONL Converter
Convert JSON array and JSON Lines
Data Format
HTML to Text
Strip markup and retain selected text breaks
Document & Media
Unicode Escape Converter
Convert text and unicode escapes
Encoding
Color Contrast Checker
Check WCAG contrast ratio
Color & Design
HTML Table to CSV
Convert HTML tables into CSV
Document & Media
Base32 Encode / Decode
Convert UTF-8 text with RFC 4648 Base32
Encoding
Timezone Converter
Convert local times with explicit handling of repeated clock times
Units, Time & Number
Base58 Encode / Decode
Encode UTF-8; decode Base58 bytes and hex
Encoding
Byte Size Converter
Compare decimal and binary byte units with total-bit output
Units, Time & Number
Duration Converter
Convert non-negative time units and complete duration strings
Units, Time & Number
Base62 Encoder Decoder
Convert text bytes with the 0–9 A–Z a–z alphabet
Units, Time & Number
Date Difference Calculator
Compare elapsed time, civil dates and Monday–Friday counts
Units, Time & Number
INI to JSON
Convert a declared INI subset to JSON while preserving strings and rejecting duplicate keys
Data Format
QR Code Decoder from Image
Read QR content from an uploaded, dropped, or pasted image
Document & Media
Excel to JSON Converter
Read XLSX worksheets with unique keys and timezone-free dates
Data Format
CSV Viewer
Inspect ordered CSV or TSV rows, preserve text, filter and export the current view
Data Format
XLSX Viewer
Inspect Excel coordinates, raw numbers, formatted values and formula caches locally
Data Format
TOML to JSON Converter
Convert TOML 1.1 and JSON with explicit numeric, date and null handling
Data Format
.env to JSON Converter
Preserve dotenv strings, reject duplicate names and review optional JSON key flattening
Data Format
XML to CSV Converter
Extract named flat XML records into CSV with exact leaf text and distinct columns
Data Format
CSV to XML Converter
Generate XML from strict CSV or TSV while preserving field text and Unicode names
Data Format
JSON to XML Converter
Map strict JSON to XML with explicit arrays, root attributes and text rules
Data Format
CSV to Excel
Convert CSV or TSV to XLSX while keeping text intact
Data Format
Markdown to PDF
Render Markdown headings, lists, tables, and code into a PDF
Document & Media
HTML to Markdown
Convert HTML documents and fragments into clean Markdown with GFM tables
Document & Media
Merge CSV Files
Append CSV rows by column name or join multiple files on a shared key
Data Format