📝 Document Tools
Quick answer: Convert documents free in your browser — PDF to Word, Word to PDF, XLSX to CSV, and 40 more formats. Open the Convertlo document converter: drop your file, select output format, download. No account needed.

Free Online Document Converter

Convert between PDF, Word DOCX, Excel XLSX, CSV, TXT, JSON, and HTML — all 43 converters run 100% in your browser. No upload, no signup, no watermark. Your documents never leave your device.

✓ 43 document converters ✓ No upload — files stay on your device ✓ Free forever
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Which Document Format Is Right for You?

PDF
Sharing, printing, archiving
Preserves layout across all devices. Not easily editable. Convert to DOCX when you need to make changes.
DOCX
Word processing, editing
Microsoft Word format. Editable with Word, Google Docs, and LibreOffice. Best for collaborative documents.
XLSX
Spreadsheets, data analysis
Microsoft Excel format. Supports formulas, charts, multiple sheets. Convert CSV to XLSX to add calculations.
CSV
Data export, databases, APIs
Plain-text tabular data. Compatible with every database and data tool. Best for importing/exporting data.
HTML
Web pages, email templates
Markup language for web content. Convert to PDF to save web pages or email templates permanently.
JSON
APIs, config files, data
Structured data format. Convert to CSV or XLSX to open API responses and config data in spreadsheets.

Most Popular Document Conversions

All 43 Document Converters

PDF — See all PDF tools →

DOCX (Word)

XLSX (Excel)

CSV

TXT / HTML / JSON

Learn More — Document Format Guides

Other Converter Categories

Frequently asked questions

Use the PDF to DOCX converter — upload your PDF and download an editable Word document. The conversion runs entirely in your browser, so your document is never uploaded to any server.
Yes — the XLSX to CSV converter extracts the data from your spreadsheet into a comma-separated values file. Each worksheet becomes a separate CSV. The conversion runs in your browser using the SheetJS library.
Use the DOCX to PDF converter — drag and drop your Word document and download a PDF. No Word installation required. Formatting is preserved including fonts, tables, and images.
Yes. The JSON to XLSX and JSON to CSV converters flatten JSON arrays into spreadsheet rows. Nested objects are handled automatically — useful for exporting API responses or database records.
No. All document conversions run locally in your browser using PDF.js, SheetJS, and other browser-based libraries. Nothing is sent to any server — your sensitive documents stay completely private.
Yes — the HTML to PDF converter renders your HTML file and exports a PDF. Inline CSS styles are preserved. Useful for saving web pages, email templates, or HTML reports as shareable PDFs.