Technology FAQ

ONLYOFFICE Online Editor is a brand new level in online document processing. It is the first editor built in HTML5 taking advantage of the Canvas abilities while all other existing online editors use HTML4.

Formatting and content loss are common problems for other online editors when it comes to conversion, viewing, and editing files in different formats and browsers. We use Canvas - a part of HTML5 - to gain 100% equality. This element allows for free access to pixels and independent text drawing. This is why the document looks the same in any browser and any format.

All the existing online editors fail to upload, view and zoom large files and images. We've created an absolutely new architecture code that makes ONLYOFFICE Online Editor as powerful as a desktop editor when working with large documents, paging a,nd zooming.

Most online document editors provide a very limited toolset. ONLYOFFICE Online Editor offers an enhanced feature-rich toolset, so you may get the advantage of various fonts, styles, and multiple line spacing as you are used to with your favourite desktop editor.

You can edit documents, spreadsheets and presentations of the most popular formats: DOC, DOCX, ODT, RTF, TXT, XLS, XLSX, ODS, CSV, PPTX, PPT, ODP. While uploading or opening the file for editing, it will be converted to the Office Open XML format. It's done to speed up the file processing and increase the interoperability.