You're here for the SHEETS! Today we've got some Swapnote, a gazillion Atari games, Sonic, Cookies, Battle City, Switch Home Menu icons, Xenogears, and some SNES goodies! There's more where that came from though so take your time and have a looksee, and try to stay safe! It's important to keep sprites from the same animation together so it makes sense to anyone viewing the sprite sheet. By the same token, each animation should be placed separately enough from each other that the viewer can tell where one ends and the next begins. When compiling animations into a sprite sheet, it's best to do so in a logical order.
Shift and click to swap selected palette index to a new location
Find a colour:
Edit and reorder palette index values below. Values can be in 9bit hex as $1FF or in decimal as values from 0 to 511.
Supported upload formats: Native Next 9bit .pal, JASC .pal and GIMP .gpl file formats
Click on a palette index (left) then click on a new colour (right) to change the palette. Changes immediately update the sprite and tile previews. Watch demo video
To use an existing palette, drag the 512 byte palette file into this panel.If you change the palette ensure you download and load it using the PALETTE keyword.
Legend:
Keys:
Please note: the palette editor is new (as of 9-July), so if you spot anything untoward please raise an issue.

8px: shift+cursor keys
1px: ctrl+shift+cursor keys
Sprite 64 (index 63) is used to initially fill the tile map.
Drag and drop into the tab panel to restore previous .map files
For permanent links you can use: https://ezgif.com/sprite-cutter?url=https://example.com/source-image.gif
Free online tool for cutting image sprites to individual images.
Enter tile size or the number of columns and rows, and this tool will slice the image for you, outputting images in PNG, GIF or JPG format.
You can download all images at once as a ZIP archive.
You can also use this tool as a sprite sheet to GIF converter, to make an animated GIF out of sprite sheet, by first slicing the sprite, and then selecting 'Create GIF animation' option.