---
title: "Security | How OfficeLint handles your Office files"
url: "https://officelint.com/security"
lang: "en"
updated: "2026-10-05"
---

1. [Home](https://officelint.com/)
2. Security

# Security: how OfficeLint handles your files

For anyone deciding whether to upload a file, or asking IT and compliance to approve a tool. In plain language, every step a file goes through, from upload to deletion.

You can forward this page to IT or compliance as is Updated 2026-10-05

## Key points

- Files are deleted automatically after 15 days. You can delete them any time, or have them deleted right after export.
- Files are never used to train models — only for the checks, edits, restyling and exports you start.
- The original is never overwritten; the revised file is a new file and every change can be undone.
- A shared check result contains only the health score and an issue summary, never the file’s content.

## What happens to a file in OfficeLint

1. ### Before upload: how it will be handled

   On your first upload, a card explains where files are stored, for how long and who can see them. Before a check starts, you see how many credits it will use.

2. ### Check: read only, nothing changed

   The file is read to produce the report. Encrypted or protected files must be unprotected in the original Office application first; OfficeLint never asks for or stores your password.

3. ### Fixes and edits: the original stays put

   All changes are made on a copy. Each one can be undone and is logged in the change history. Anything uncertain is only suggested; you decide.

4. ### Export: saved as a revised file

   Before export, file integrity is checked to make sure the revised file opens. You can attach a change report and write unfixed issues as comments.

5. ### Deletion: automatic after 15 days

   The file page always shows “Deleted in N days” and a “Delete now” button, and the file list reminds you the day before. Files are kept 15 days so you can recheck and re-export within one delivery cycle without paying again.

## What we don’t do

- **Overwrite your original** The revised file is always a new file.
- **Train models on your files** Files are used only for the actions you start.
- **Include file content in shared results** A shared result contains only the score and an issue summary.
- **Store file passwords** Remove protection before uploading.
- **Change what you haven’t confirmed** Issues that need judgment only get suggestions.

## What does redaction check?

OfficeLint uses rules to find phone numbers, email addresses, ID numbers and bank card numbers. Preview and edit each replacement before applying it. Afterwards, OfficeLint checks again for remaining information matched by the selected rules. This is free. Coverage is limited to supported formats; client names, amounts and addresses are outside the default rules, so review the file before sharing.

## Quick reference for IT and compliance

OfficeLint brings together the file-handling details your team needs to review.

| Item            | Details                                                                                              |
| --------------- | ---------------------------------------------------------------------------------------------------- |
| Product type    | Web application used in the browser; available after sign-up                                         |
| Retention       | Deleted automatically after 15 days; users can delete any time or choose deletion right after export |
| Model training  | User files are never used to train models                                                            |
| Original file   | Never overwritten; revised file saved as a new file; integrity checked before export                 |
| Sharing         | Only the health score and an issue summary; no file content                                          |
| Protected files | Protection must be removed first; passwords are never stored                                         |

## Security FAQ

### Does OfficeLint use my files to train AI?

No. Your files are used only for the checks, fixes and exports you start, never to train any model.

### How long are uploaded files kept?

They are deleted automatically after 15 days. You can click “Delete now” on the file page at any time, or change your settings to delete files right after export. The file list reminds you the day before a file expires.

### Can anyone else see my files?

Only you can. When you share a check result, the other person sees only the health score and an issue summary, not the file’s content.

### Can OfficeLint handle encrypted or protected decks?

Remove the protection in PowerPoint first, then upload. OfficeLint never asks for or stores your file password.

### Will OfficeLint change my original file?

No. All changes are made on a copy, and the revised copy is exported as a new file. Every change can be undone individually, and anything uncertain is only suggested, never changed automatically.

## See how the report works before uploading.

The report preview on the home page shows how issues are grouped and which can be fixed in one click.

[Preview the report](https://officelint.com/#report) [Sign up and get started](https://officelint.com/sign-up?lang=en)