توضیحات:

With Toonk, you can quickly and easily create your animated GIFs for free. Simply upload any combination of PNG, JPG, BMP or GIF files. The files will be loaded in the timeline as frames for your new animated GIF. You can re-arrange frames by using drag and drop, duplicate them or uncheck them to drop them from the timeline.
How do I load files for my GIF?
Use the "Choose Files" button to open files. You can select multiple images and types. All files will be added to the timeline as a frame.

Image files such as JPG, BMP and PNG will be loaded as a single frame with a default delay of 80ms (12fps). For animated GIF files with multiple frames, a frame will be added to the timeline for each image frame in the GIF. The delay for each frame in the animated GIF will also be loaded in the timeline as well.
Editing the GIF Timeline
Edit the GIF timeline by moving frames. Drag and drop frames to rearrange the order of frames in the timeline. You can duplicate frames and you can edit the delay for each frame. Increasing the delay causes the frame to pause longer and consequently increases the duration of the GIF animation.

You can disable a frame from showing up in the final GIF animation by clicking the checkbox in the frame. To enable or disable a range of frames you can use the drop dropdown menu in the timeline header controls.