Free image tools
Small, exact tools for everyday image tasks. They run on the device itself, so nothing is uploaded and nothing costs credits.
Split, join or watermark
Split image cuts one picture into a grid of up to 64 tiles. The cut lines can be dragged, a strip between tiles can be removed, and only the selected tiles are downloaded, one by one or as a ZIP. It can be used to make an Instagram grid, slice a sprite sheet or tile a large print.
Join images does the opposite: up to 16 pictures are placed side by side or stacked, with seams that can be dragged and a choice, per picture, between filling its cell and fitting inside it. It can be used for a before/after, a comic strip or a long screenshot.
Add watermark puts a text or logo watermark on up to 20 photos at once, in a corner or tiled across the picture, and downloads them together.
Private processing
These tools are ordinary code running in the browser tab, not an AI model on a server. Files never leave the device, there is no queue, and the result is exact and repeatable: the same input and settings always give the same output.
No account, no credits
Open a tool and use it. Starring a tool pins it under Image Tools in the sidebar; when signed in, pins are available on other devices.
Frequently asked questions
Need more information? Email us at support@arumi.ai.
Is there a limit or a watermark?
No watermark and no daily limit. Each tool states the file sizes it can handle, which depend on the memory of the browser.
Which formats are supported?
PNG, JPEG, WebP and AVIF in all three tools; the splitter and the watermark tool also open GIF, BMP and SVG.
Select a tool
Every tool above opens in the studio.