Excel for the Web: How to Upload and Convert an Excel Workbook for Collaboration With OneDrive Security

To upload and convert an Excel workbook for collaboration in Excel for the web, store it on OneDrive, share it with people, and send a PDF copy to anyone who only needs to read. Adobe Acrobat’s Excel to PDF converts XLS and XLSX files online in any browser and deletes them from Adobe servers unless you sign in to save.

This article is for professionals who want a secure, fast way to turn spreadsheets into files that others can share and work on together.

OneDrive Security: How Encryption Protects Your Data

OneDrive encrypts your workbook in transit and at rest, but Microsoft holds the keys unless you add Customer Key. Microsoft’s documentation says connections use TLS, and files at rest get BitLocker disk encryption plus per-file encryption with a unique key for each file. Every update to a file is encrypted with its own key, each file is split into chunks with their own keys, and the process uses AES with 256-bit keys that Microsoft describes as FIPS 140-2 compliant. These are Microsoft’s own descriptions.

Who manages the keys: Microsoft’s service assurance page says SharePoint creates and manages the per-file keys, or you create and manage them when you use Customer Key.
What Customer Key adds: Microsoft says it complements BitLocker and lets you control the root encryption keys, and it encrypts only data at rest in the cloud.
Not end to end: the same page says that when you download a file, SharePoint retrieves the encrypted data and decrypts it before sending it to you, so the protection is service side rather than end to end.
Connection detail: Microsoft’s encryption risks page lists TLS 1.2 with AES 256 for SharePoint and OneDrive connections.
Extra gate: Microsoft describes OneDrive Personal Vault as adding a second identity verification step for sensitive files.
Compared with Adobe: Adobe’s page says its converter handles files on Adobe servers and deletes them unless you sign in to save, which is a retention statement, not an encryption claim.

Sharing and Collaboration Permissions for a Spreadsheet in OneDrive

Share the workbook with specific people and the lowest permission they need, and keep Anyone links for non sensitive files. Microsoft’s OneDrive help describes link types for anyone, people in your organization, people with existing access, or people you choose, and settings to block download and set an expiration date. Microsoft says Allow editing is checked by default when you share an Excel workbook, so clear it for readers. Live co-authoring in Excel for the web needs XLSX, XLSM, or XLSB.

Passwords: Microsoft’s Q&A says the password option applies to Anyone links and not to links for specific people.
Block download: it requires editing to be turned off, and people who already have edit access can still download.
Comments: Microsoft says threaded comments let people mention colleagues in Excel for the web, and people with write access can resolve and reopen threads.
Notes versus comments: Microsoft describes notes as separate from comments, so use comments when you need replies.
Co-authoring limits: Microsoft says Strict Open XML is not supported for co-authoring, so save a standard XLSX first.
Version history: it works for files in OneDrive or SharePoint, and a Microsoft community answer advises everyone to stop co-authoring before you restore a version.

Sheet Import for Excel Files: Platforms Compared for Collaboration and Security

Platforms that import Excel files for collaboration with security controls include Google Sheets, Zoho Sheet, Smartsheet, ONLYOFFICE, Rows, and Adobe Acrobat’s Excel to PDF, and the right one depends on whether people edit the data or only review it. Editors keep formulas and let people work together, while a PDF fixes the layout for readers. Test an import with a copy of your workbook, because every platform drops or changes something. Each platform below describes its own import formats and permission levels in its help pages.

Platform	Best For	Key Details
Google Sheets	Shared editing with comments and roles	A guide says an imported Excel file converts to Google’s format; Viewer, Commenter, and Editor roles; owners can stop viewers and commenters from downloading
Zoho Sheet	Importing XLSX with formulas and formats intact	Says it opens .xls, .xlsx, and .csv with charts, pivot tables, and formulas intact; view, comment, edit, and share levels; external links can be password protected
Smartsheet	Row based tracking with five permission levels	Its API reference says it imports CSV or XLSX, not XLS; recipients without a member seat may be limited to view only
ONLYOFFICE	XLSX editing on your own server or desktop	Lists XLSX as native; permissions for view, edit, comment, review, and fill out; Fast and Strict co-editing modes
Rows	A sheet shared as a small web app	Imports CSV, XLSX, and XLS; shares by invite, private link, or its Community; View mode presents a sheet like a small web app
Adobe Acrobat (Excel to PDF)	A fixed PDF copy for reading and comments	Takes a few seconds; keeps tables, rows, and columns; deletes files unless you sign in to save; signed in users can share the PDF so everyone comments in the same file

Speed: Adobe’s page says conversion takes a few seconds, and the other pages I read do not publish conversion times, so time each tool with a sample file.
Import fidelity: Zoho says a protected sheet stays protected but its password is not carried forward, and Smartsheet’s API says hierarchical relationships between rows will not import.
Who can comment: Smartsheet’s help says people outside your plan on a Pro plan only have Viewer access.
Self hosting: ONLYOFFICE’s GitHub page says the free Community Edition installs with Docker, which keeps files on your own server.

Frequently Asked Questions

Do sensitivity labels stop people from collaborating in Excel for the web?

Not for editing. Microsoft’s Purview documentation says you can use Office for the web to open and edit Office files that have sensitivity labels applying encryption, and it lists Excel .xlsx, .xlsm, and .xlsb files as supported. It adds that desktop apps do not support co-authoring for encrypted labeled files by default, so an admin must enable it. Ask your administrator before you promise live co-editing.

What should I remove before uploading a workbook?

Hidden data and personal details. Microsoft’s Document Inspector finds hidden data and personal information, including document properties such as author, subject, and title, and it does not support automatic removal for protected documents, so run it before you add a password. Delete hidden sheets and sensitive columns from the upload copy, and keep the original workbook as your master.

When should I send a PDF instead of sharing the workbook?

Send a PDF when people only need to read and comment. Adobe’s page says its converter keeps your original tables, rows, and columns, and that signed in users can share the PDF so everyone comments in the same file, replies, and mentions people. The PDF has no live formulas, so keep the workbook on OneDrive for editors and send the PDF to reviewers.

Does a PDF carry the workbook’s hidden details?

It can. LibreOffice’s guides say properties and other information can be kept when a file is saved to PDF unless they are removed, and Adobe’s page does not say its converter strips them. Remove personal information from a copy of the workbook before you convert, then open the finished PDF to confirm that nothing sensitive came through.

For collaboration with OneDrive security, upload the workbook, share it with specific people at the lowest permission, and convert a PDF copy for anyone who only reviews.