Terms of Service

Who provides the service

Markedfile is provided by Graysphere LLC, a limited liability company organized in Wyoming, United States. The company site is https://graysphere.com. These terms are an agreement between you and Graysphere LLC for use of Markedfile.

The service

Markedfile embeds an invisible forensic watermark in files you share privately and can detect a surviving mark so you can trace which identifier was embedded. You upload a file, assign a private identifier, and download a marked copy. You can later upload a copy or a screenshot to see which identifier can be recovered.

Supported inputs today are PNG, JPEG, and WebP images; PDFs, including detection from the rendered page rather than metadata alone; text files and ZIP-based packages, including Office files; and other binary files, which are returned inside a marked ZIP. Uploads are limited to 20 MB. Images are limited to 16 megapixels. PDFs are limited to 200 pages, 4 million rendered pixels per page, and 32 million per file.

Accounts

You need an account to mark files and to see your records. You register with an email address and a password of 8 to 128 characters. You are responsible for activity on your account and for keeping the password confidential. You can change your name, email, and password from profile settings.

When email delivery is configured, registration sends a message to confirm the address, and the login screen can send a password reset link. You cannot use Markedfile until you open that verification message. An account that is still unverified is deleted 7 days after registration. Changing the email address sends a confirmation to the new address, and the address stays the same until that link is opened. You can turn on an authenticator app from profile settings. While it is on, signing in asks for a current code from that app. Backup codes are shown once when you create them. A backup code can be used once to sign in, and a used code is rejected. If you cannot sign in, contact Graysphere LLC through the company site.

Acceptable use

You may mark files you have the right to process. You may not use Markedfile to break the law, to infringe someone else's rights, to distribute malware, or to probe or disrupt the service. You may not attempt to extract the watermark key, other customers' identifiers, or files from a workspace you do not belong to. Graysphere LLC may suspend an account that abuses the service.

Files and metadata

File contents are processed in memory and are not stored. Markedfile stores metadata: the identifier you assigned, the file name and type, the status, timestamps, and a detection token while the file is active. Stopping detection removes the token and keeps a history entry. Deleting the record removes it. You are responsible for the identifiers you assign and for the copies you distribute.

Plans

Free is $0 per month on the Personal Workspace, with 5 active files, each detectable for 6 months. Pro is $9.99 per month on the Personal Workspace, with 50 active files, detectable until you stop or delete them. Unlimited is $19.99 per month on the Personal Workspace, with no active-file cap, detectable until you stop or delete them. Enterprise is $49.99 per month for one shared workspace, with no active-file cap, detectable until you stop or delete them.

Free, Pro, and Unlimited apply only to the Personal Workspace. That workspace cannot be deleted, shared, or invited into. Enterprise applies to one shared workspace and cannot be attached to the Personal Workspace. A personal plan does not grant files or invitations on a shared workspace. You may create up to 20 shared workspaces without paying, so there is a workspace to subscribe. Invitations and new marks on a shared workspace require an active Enterprise subscription on that workspace. Enterprise is per workspace.

When paid billing is enabled, paid plans are processed by Stripe. When it is not enabled, you can register and use Free, and Markedfile does not charge you. A paid plan is not granted without a verified payment or an administrator override.

Cancellation, downgrades, and lapses

You may stop using Free at any time. When paid billing is enabled, you can cancel a paid plan in the billing portal. Cancellation stops renewal at the end of the current period. Changing plans does not delete file history.

On a move to a lower cap, the newest active files that fit stay active. Older active files over the cap are paused: the record and the token stay, and detection does not resolve until you resume that file into a free slot or upgrade. On a move to Free, a file older than 6 months from its mark time expires: the token is removed and the status becomes expired.

If an Enterprise subscription stops being active, new marks and new invitations stop immediately, pending invitations are cancelled, and current members stay. Files that were active stay detectable for 30 days and then expire.

Detection is best effort

Markedfile does not warrant that a screenshot, a crop, or a heavily edited copy will resolve, or that a particular person will be identified. Confidence is a heuristic. Text and ZIP-based marks are fragile. You decide how to use a detection result.

Limits of liability

The service is provided as is. To the extent the law allows, Graysphere LLC is not liable for indirect, incidental, special, or consequential damages, or for a leak that detection did not identify. Liability for a claim about Markedfile is limited to the amount you paid Graysphere LLC for Markedfile in the 12 months before the claim. If you paid nothing, liability is limited to the extent the law allows. Where the law does not allow these limits, they apply as far as it does.

Changes to these terms

We may update these terms by posting a new version on this page and changing the date above. If you keep using the service after the update, you accept the new terms.

Governing law

These terms are governed by the laws of the State of Wyoming, United States, without its conflict-of-law rules. Graysphere LLC does not name a court city or an arbitration forum on this page.

Contact

Questions about these terms go to Graysphere LLC, through https://graysphere.com. This page does not publish a street address or a dedicated legal inbox.