Converters
Add or remove data URI prefixes, convert CSV files to Excel workbooks and back, convert between XML and JSON, and turn HTML into Markdown. 5 tools, each running privately in your browser — nothing is ever uploaded.
Converters 5
Remove Data URI Prefix
ConvertersStrip the data: prefix from a data URI to get the raw Base64 payload.
Launch toolAdd Data URI Prefix
ConvertersWrap raw Base64 in a valid data: URI with an auto-detected MIME type.
Launch toolCSV ↔ Excel Converter
ConvertersConvert CSV to Excel .xlsx and Excel worksheets to CSV with delimiter detection and a table preview.
Launch toolXML ↔ JSON Converter
ConvertersConvert XML to JSON and JSON to XML with a documented mapping, safe parsing and line-and-column errors.
Launch toolHTML to Markdown Converter
ConvertersConvert pasted HTML to clean Markdown — headings, links, lists, code and tables — with unsafe content stripped.
Launch toolEvery tool is local-first
There is no upload step and no server processing. Each tool uses native browser APIs, so your files and text never leave your device.