# How to Share Large Files with Clients Securely Client files are often large and confidential at the same time: unreleased edits, contracts, designs, financial records. Here is a practical checklist for sending them so only the right people get them. _Source: https://sharelargefilesfree.com/how-to-share-large-files-with-clients-securely ยท Updated 2026-10-01_ **Quick answer:** To share large files with clients securely, send them as a password-protected, expiring download link, give the password through a separate channel, and limit who can download and how often. For highly sensitive files, encrypt them yourself before uploading, since a link alone is only as safe as the place it is shared. ## What can go wrong Most problems with client files are not dramatic hacks. They are everyday slips: a link forwarded to the wrong person, a shared folder that stays open for years, a password sent in the same email as the link, or a draft downloaded by someone who was never meant to see it. Good habits and the right link settings prevent most of them. It also helps to be clear about the level of protection a file needs. A finished wedding film and an unreleased product design call for different settings. Check your contract too. Some clients set rules for how their files are stored, where they may be downloaded and how long they are kept. If a contract names a specific platform or requires end-to-end encryption, follow it, even if another method would be more convenient. When in doubt, ask the client which method they prefer before you send anything. ## Match the protection to the risk | Risk | What helps | Free here | | --- | --- | --- | | Link forwarded to others | Password, allowed emails or domains, personal links | Yes | | Files left online too long | Expiry, delete after first download | Yes | | Too many copies downloaded | Download limits, in total and per person | Yes | | Client should only review, not keep | View-only previews with a watermark | Yes | | Confidential material | An NDA signed before download | Yes | | Not knowing if it arrived | Download alerts and activity log | Yes | | Highly sensitive data | Encrypt files yourself before upload | Use your own tool | Transfers here use HTTPS in transit and are deleted when they expire, but end-to-end encryption is not offered. Our [security overview](https://sharelargefilesfree.com/security) explains exactly what is and is not provided. ## How to send client files securely, step by step 1. **Prepare the files.** Remove anything the client does not need, such as old versions, and strip hidden data from photos and PDFs with the free [image metadata remover](https://sharelargefilesfree.com/tools/remove-image-metadata) and [PDF metadata remover](https://sharelargefilesfree.com/tools/remove-pdf-metadata). 2. **Encrypt if it is highly sensitive.** Put the files in a [password-protected ZIP](https://sharelargefilesfree.com/tools/password-protect-zip) or use your own encryption tool. 3. **Upload at [Share Large Files Free](https://sharelargefilesfree.com/)**, up to 20 GB per transfer, and set a password. 4. **Open More options** and choose the controls you need: a download limit, allowed emails or domains, an NDA, or view only. 5. **Send the link by email** so you get a record of who it went to, and tick the option to be emailed when it is downloaded. 6. **Share the password separately**, for example by phone or text message. 7. **Clean up.** Once the client confirms they have the files, delete the transfer or let it expire after 1 day. ## Controls that make a real difference - **Personal links.** Give each person on the client side [their own link](https://sharelargefilesfree.com/personal-download-link-per-recipient), so you can see who downloaded and switch off one person without affecting the rest. - **NDA before download.** [Require a signature](https://sharelargefilesfree.com/send-files-with-nda) before anything can be opened, with a PDF certificate for both sides. - **View only.** For drafts and proofs, [view-only links](https://sharelargefilesfree.com/view-only-file-sharing) hide the download button and watermark every preview with the viewer's email. - **Limits and rules.** Cap downloads, set opening and closing times, and [allow only certain countries](https://sharelargefilesfree.com/country-restricted-download-link) if that matches your contract. - **Proof of integrity.** Each file shows a SHA-256 checksum, so the client can [confirm their copy is identical](https://sharelargefilesfree.com/verify-file-checksum-sha256). ## Good habits for working with clients - **Agree on the channel.** Tell clients how files will arrive, so they can spot a fake link in their inbox. - **Use clear file names** with the project, version and date, so nobody downloads the wrong draft. - **Keep your own account safe.** If you use a free account here, switch on two-step verification, because it holds your transfer list. - **Do not reuse passwords** across clients or projects. - **Use the right tool for long projects.** For months of back-and-forth, a shared folder in Google Drive, OneDrive or Dropbox with access limited to named accounts, or a dedicated client portal, may suit you better than a series of transfers. ## Delivering video and creative work For video and photo deliveries, files arrive in original quality with no compression, which matters when clients will edit or print them. If you need approvals, [client review](https://sharelargefilesfree.com/client-proofing) lets clients pick favourites, comment at an exact second of a video, and approve or request changes. For more on delivery routines, see [sending video to a client](https://sharelargefilesfree.com/send-video-to-client). ## A checklist before you press send - Is this the final, approved version, and is anything confidential to another client included by mistake? - Is a password set, and do you know how you will share it? - Is the expiry long enough for the client, but not longer than needed? - Should the link work only for the client's email addresses or company domain? - Do you want to know when it is downloaded? Answering these takes a minute and prevents most of the mistakes that cause trouble later. ## A simple message to send with your link Clients are rightly cautious about unexpected links. A short, clear note helps them trust the delivery and know what to do: _Hi, here are the final files for the project. The link below works until the date shown on the download page. You will receive the password separately by text. If anything does not open, reply to this email and I will resend it._ Sending by email from the site includes your message with the link, and you can resend the email from the Transfers page if it goes missing. You can also [send to a saved group](https://sharelargefilesfree.com/send-files-to-a-group) of client contacts in one step. ## Questions clients often ask - **Do I need to install anything?** No. The files download in any modern browser. - **Why do I have to confirm my email?** If you limited the link to certain emails or asked for an NDA, the client confirms their address with a short code so you know who downloaded. - **Can I download later?** Until the link expires. If they need more time, you can extend it. - **Is the file complete?** They can compare its SHA-256 checksum with the one shown on the download page. ## Frequently asked questions ### What is the most secure way to send large files to a client? Encrypt sensitive files yourself, upload them as a password-protected, expiring link limited to the client's email or domain, and share the password through a separate channel. ### Is a password-protected link enough? For most client work, a password plus an expiry and download limits is a sensible level of protection. For highly sensitive data, also encrypt the files before uploading. ### Can I see whether my client downloaded the files? Yes. Tick the option to be emailed when it is downloaded, and check the activity and download counts on your Transfers page. ### Does my client need an account? No. Clients open the link in a browser. If you require an NDA or allowed emails, they confirm their email address first.