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Text: PDF, DOC, DOCX, ODT, RTF, TXT, HTML
Spreadsheet: XLS, XLSX, ODS, CSV
Presentation: PPT, PPTX, ODP · Maks 200 MB
Preserving an old workbook in a form that will still open in twenty years without Excel.
XLS is the binary Excel format used until Office 2007. Its hard ceiling of 65 536 rows is the reason most people eventually convert away from it.
PDF grew out of Adobe Camelot project and became an open ISO standard in 2008. Its whole purpose is that a document looks the same on every screen and every printer, which it achieves by freezing the layout and embedding the fonts. That strength is also its limitation: a PDF describes where marks sit on a page, not what a paragraph is, so editing one means rebuilding it.
| XLS | ||
|---|---|---|
| Released | 1987 | 1993 |
| Developed by | Microsoft | Adobe, ISO standard since 2008 |
| Type | Legacy spreadsheet | Fixed layout |
| Editable | Yes | Not really |
| Layout behaviour | Grid, 65 536 row limit | Pixel-exact everywhere |
| Best suited to | Old Excel files | Sending and printing final documents |
| Support | Wide but deprecated | Universal |
Nothing is lost, but the result becomes fixed. Fonts and layout are embedded, so the document prints identically anywhere - and editing it afterwards means converting it back first. Text stays selectable and searchable unless the source was already a picture.
Most documents finish in a few seconds. Conversion runs on our server rather than in your browser, so the slow part is usually the upload. Long reports and image-heavy files take proportionally longer.
Your file is uploaded to our server because the conversion runs there. A cleanup task runs every hour and deletes anything older than an hour, so nothing you upload survives more than about two hours. We do not open your files, we do not keep copies, and no account is needed to use the converter.