Cookies and storage
Last updated
Cookies we set
None. DiagramDesk sets no cookies of its own, for any purpose, including analytics. The site works with cookies blocked.
What is stored on your device
The editor uses your browser's local storage to keep your diagrams and preferences, and session storage for one note that lasts only as long as the tab. This is space on your own computer. Nothing here is sent to us, and none of it identifies you. All of it is kept for app.diagramdesk.com, the address the editor and the start page are served from. Only if you ask for it, the browser also keeps an offline copy of the editor's own files, so that it opens without a connection: the last two rows below. Nothing of it exists until you switch on Keep an offline copy (in the editor's Diagrams list, in the guide under the editor, or on the start page) or install DiagramDesk as an app in a browser that tells the page it was installed.
| Name | What it holds | How long it lasts |
|---|---|---|
fs.docs | A list of the diagrams saved in this browser: an id, the title, when it changed and how many shapes it has. | Until you delete the diagram or clear site data. |
fs.doc.<id> | One saved diagram: the shapes, connectors, text and colours you drew, and any image you placed on the canvas, which is embedded in the diagram on your device. | Until you delete that diagram, empty the trash, or clear site data. |
fs.trash | The list of diagrams you have deleted. Deleting moves a diagram here rather than destroying it, so you can put it back. | Until you empty the trash on the start page, or clear site data. |
fs.current | Which diagram to reopen when you come back to the editor. | Until you clear site data. |
fs.prefs | Your editor preferences: light or dark theme, whether shapes snap to each other, whether the side panels are open, and when you last saved a backup file, so the start page can say whether your diagrams are in one. | Until you clear site data. |
fs.entry | That this tab reached the editor from the start page, which is the editor's one way in. It is kept in session storage, which the browser keeps for one tab only. | Until you close the tab. |
fs.probe | A one-character value written and immediately removed, to test whether storage works at all in this browser. | Removed within the same instant it is written. |
sw.js (service worker) | A small script registered only if you ask for an offline copy of the editor, with the Keep an offline copy switch or by installing DiagramDesk as an app, so the browser can open the editor without a connection. It answers only requests for the editor's own files and passes every other request, including any to another site, to the network untouched. | Until you choose Remove the offline copy, clear site data, or remove it in the browser's settings. A new version of the site replaces it. |
fs-app-… (cache) | The offline copy the service worker keeps: the editor's three pages and its scripts, styles, font and icons. It holds no diagram and nothing about you. | Replaced when the editor's files change; deleted by Remove the offline copy, or when you clear site data. |
Backups, and asking the browser to keep your diagrams
Back up everything, on the start page and in the editor, saves one file holding all your diagrams to your own downloads. It is made in the page and never passes through us. Restore a backup reads such a file back into this browser, adding what is missing and never overwriting a diagram already here.
Browsers can clear a site's storage on their own, for example when they run short of space.Ask it to keep them asks your browser to keep this site's storage until you clear it yourself. The browser decides, and some ask you first. It stores nothing new and sends nothing anywhere; it changes only how your browser treats what is already here.
How to remove it
Deleting a diagram moves it to the trash on the start page, where it stays until you remove it for good. Nothing in the trash is deleted automatically. To destroy a diagram, use Delete forever there, or Empty trash to remove them all at once.
The offline copy has its own button, Remove the offline copy, beside the switch that made it. It unregisters the service worker and deletes the copy.
To remove everything at once, clear this site's data in your browser's settings, usually under Privacy, then Cookies and site data, then See all site data. Either way the deletion is final: we hold no copy to restore from.
The editor also works with storage switched off entirely. You will simply be told that nothing is being saved, and you can export your work to a file instead.
Third parties
Cloudflare Web Analytics counts page views without cookies and without storing any identifier on your device. It is not loaded on the editor, the start page or the page that opens shared links.
The editor, the start page and the page that opens shared links load no third-party script at all, and nothing on them is requested from anyone but this site.
See the privacy page for the full picture.