Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
ConvertX.am converts XLSB files to PDF online, for free and without signing up. Upload a file of up to 500 MB and download the PDF result; uploaded and converted files are deleted automatically within about an hour.
Convert binary Excel spreadsheets (XLSB) into universally viewable PDF documents instantly. This conversion is essential for sharing financial models and large datasets without requiring spreadsheet software.
XLSB is Microsoft Excel’s binary workbook format, optimized for opening and saving huge datasets quickly using a compressed structure. PDF, developed by Adobe, is a fixed-layout document format that locks in formatting, fonts, and table dimensions. When you convert an XLSB document to PDF, your complex rows, columns, and conditional formatting are rendered into a static page layout, ensuring the spreadsheet looks identical on any device.
This conversion happens without any data loss, preserving the complete visual structure of your sheets. The final file size of the PDF changes only insignificantly compared to the original binary workbook.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
