About WorkFlo

WorkFlo exists for the moment when you just need to open a file, change it and send it on, without installing anything or creating an account. The same idea powers WorkFlo's free PDF tools: merge, split, compress, edit, sign and protect PDFs entirely in your browser.

How it works

Everything runs in your browser. Documents are edited with the open-source Tiptap and ProseMirror editor; spreadsheets use the open-source Univer engine; and file formats are read and written with open-source libraries. Your files are not sent to our servers.

How we pay for it

Advertising on pages outside the editors. The editing workspaces are always ad-free.

Open-source software we use

• Next.js, React (MIT)
• Tiptap and ProseMirror (MIT)
• Univer (Apache-2.0)
• ExcelJS (MIT)
• docx (MIT)
• PptxGenJS (MIT)
• JSZip (MIT or GPL-3.0, used under MIT)
• jsPDF (MIT)
• PDF.js (Apache-2.0)
• pdf-lib and pdf-lib-plus-encrypt (MIT)