Bidirectional converter between CSV data and HTML table markup with live preview. Files are converted locally in your browser — nothing is uploaded.
Content reviewed October 2026 · About Toolzum
Renders pasted HTML and CSS markup (no file upload, no URL screenshots) into downloadable PNG, JPEG (fixed quality 0.95), or SVG via the html-to-image library. Preview is DOMPurify-sanitized — free to start with no signup.
Convert CSV data into GitHub-flavored Markdown tables for docs and README files. Files are converted locally in your browser — nothing is uploaded.
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Generate Markdown tables without hand-aligning pipes — define columns and rows, preview live, and copy GitHub-ready markup.
Write HTML and see a live preview rendered in a sandboxed iframe. Perfect for prototyping and testing. Code never leaves your device — formatting and validation run locally in your browser.
Both directions — CSV rows become HTML tables and back again.
First row becomes th scope headers automatically every time.
Clean unstyled tables — add your own CSS classes after export.
No — conversion runs locally in your browser, free with no signup.
XLSX ↔ CSV Converter
Convert between XLSX workbooks and CSV files preserving sheets and encoding. Move data across Excel and pipelines — local SheetJS work, unlimited saves.
CSV to JSON
Converts CSV files to JSON format — spreadsheets, database exports, and data imports to APIs, configuration files, and data exchange between web services. All conversion happens locally in your browser with no file size limits.
CSV Output Tools
Format and validate CSV files — consistent delimiters, quoting, and line endings. Fix files Excel mangles on export — local processing, free, no signup.