Combine PNG frames into one sprite sheet
Drop run_01 … run_12 and get one strip, sorted in the right order, with every cell the same size.
Combining frames is free on every plan. The unmarked download is Basic ($4.99 once).
Animation tools export frames, not sheets. You end up with a folder of run_01.png through run_12.png, each on its own canvas, each with the character at a slightly different offset. Packing them by hand in an image editor is slow and it is very easy to get the order wrong once you pass frame 9. SpriteFix takes the whole folder at once, sorts the files the way a human would, and packs them into a single strip with even cells and a shared baseline.
Sound familiar?
- File name sorting that puts frame10 before frame2 and scrambles the animation.
- Frames exported on different canvas sizes, so the character jumps between cells.
- Transparent padding that differs per frame and shifts the feet up and down.
- Hand-packing in Photoshop or Aseprite and having to redo it every time the art changes.
How to do it in SpriteFix
Drop the whole folder
Select every frame file at once. SpriteFix looks at the names and shapes and recognises a pose pack rather than separate sheets.
Confirm the job
The workspace tells you what it decided — combine frames into one strip. If the set is ambiguous it asks you first instead of guessing silently.
Reorder or drop frames
Each file is a card in the Ready queue. Untick a frame to leave it out, remove a file with the ×, or add more without starting over.
Play it before you export
Press play to loop the packed strip at your chosen frame rate. If a frame is out of order you will see it immediately.
Download the strip
Export as a PNG strip at 32, 64, 128, or 256 px per cell. Basic ($4.99 once) removes the watermark and keeps your original file names.
What you get back
- One strip, frames in true numeric order, equal cells, shared baseline.
- A looping preview so you can confirm timing before download.
- GIF export of the same animation for a devlog or a store page.
- Frames you removed stay out of the export — no re-uploading.
What it will not do
- Frames are packed into a single row strip. Packing several sheets into one grid is a separate Pro job.
- We sort by the numbers in your file names, then by upload order. Frames with no numbers keep the order you dropped them in.
- SpriteFix does not add in-between frames or interpolate motion.
We would rather tell you the limits here than have you find them after paying. Full list in the limitations chapter.
Free to try. $4.99 once to keep it clean.
Clean, preview, and play as much as you like for free — free PNG downloads carry a watermark. Basic removes the mark for life for $4.99 paid once. Pro ($14.99 once) adds grid cutting, per-frame ZIP export, and bigger batches. There is no subscription.
Questions people ask
- How many frames can I combine at once?
- Free and Basic take up to 10 files per batch; Pro raises the file count and total size limits. Every plan previews the packed strip before you download.
- Will file10.png come after file2.png?
- Yes. SpriteFix sorts names the way a human reads them, so frame2 comes before frame10 rather than after it. You can still see the order in the Ready queue and fix it before exporting.
- My frames are different sizes — is that a problem?
- No. Each frame is measured, padded to the cell size you pick, and bottom-aligned, so mixed canvas sizes end up consistent in the strip.
- Can I combine JPEG or WebP frames?
- Yes, you can upload PNG, JPEG, or WebP. The export is always PNG so transparency survives.