Your images
When you drop a photo into a tool, your browser reads the file directly from your disk using the File API and decodes it into memory. All arranging, cropping, slicing, and exporting is drawn on an HTML <canvas>in the same tab. The finished file is created as a local blob and handed to your browser's download manager.
At no point is image data, a file name, or anything you type into a tool (captions, labels, notes) sent over the network. collage.tools has no upload endpoint, no image storage, and no user accounts.
Check it yourself
- Open any tool and your browser's developer tools (F12, or ⌥⌘I on a Mac).
- Switch to the Network tab and clear it.
- Drop in a photo, change settings, and export.
- You'll see no request carrying your image. You can even turn on airplane mode after the page loads — every tool keeps working.
What is collected
The site uses Google Analytics to count page views and see which tools are used, which helps decide what to build next. Google Analytics sets cookies and receives standard request data such as the page URL, referrer, approximate location, and device type. It never receives your images or tool inputs. Browser privacy settings and content blockers that block Google Analytics won't affect any tool.
What is stored on your device
Only your light/dark theme preference, in local storage. Your work is held in memory and disappears when you close or refresh the tab — export before you leave.
Photo metadata (EXIF)
Exports are freshly drawn canvases, so they don't carry over the original files' EXIF data — no GPS location, camera serial, or capture time ends up in what you share.