Data tools

7 free online tools in Data: View, clean and convert CSV and JSON. Runs in your browser, no sign-up.

• CSV Viewer: View, sort and filter a CSV file as a table.
• CSV Cleaner: Remove duplicate rows, trim whitespace, drop empty rows.
• CSV ⇄ Excel: Convert between CSV and Excel (.xlsx).
• JSON Tree Viewer: Browse JSON as a collapsible tree.
• Markdown to EPUB: Turn Markdown or plain text into a real, valid EPUB3 ebook.
• EPUB to PDF: Convert an EPUB's real chapters, in order, into a paginated PDF (text only).
• PDF to EPUB: Extract a PDF's text layer into a single-chapter EPUB3 ebook.