Client-side tool
PDF • DOCX • JSON • CSV • JPG • XLSX
Convert & preview files directly in the browser.
Upload one or many files and ConvertX will transform them instantly on your device — JSON ⇆ CSV, images, Excel, DOCX and PDF to text or PDF. Nothing is uploaded to a server.
JSON ⇄ CSV
XLSX → CSV
DOCX → TXT / PDF
PDF → TXT / DOCX
JPG ⇄ PNG
Image → PDF
Multi-file batch mode
Batch convert
Drop 10 DOCX files and turn them into PDFs with one click.
Privacy first
Files never leave your browser — safe for notes and sample data.
Instant preview
Preview the first converted file before downloading.
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Smart client-side converter
Batch mode
Select one or multiple files, choose what you want, preview & download.
Works offline after first load