Download the candidates first
Choose 2–9 JPG, PNG or WebP files from your device, up to 25 MB each. Keep a baseline output together with the attempts you want to compare; the stitcher does not retrieve generator history for you.
Review your visual experiments
Stitch Images to Compare Prompt Results
Find the change worth keeping
Stitch images from your downloaded prompt results into a single comparison board. Try Nano Banana's browser stitcher lets you arrange 2–9 files manually, adjust their crops and export PNG or JPG. Comparing existing pictures here is free, with no registration, credits or added watermark.
Free, no watermarkNo sign-up to stitchStitch locally in your browser
Your photo workspace Files stay on your device
Live preview · No uploads, no watermarks
Your photos (0/9)
Your selected photos will appear here. Drag to reorder them.
How to stitch images from a prompt experiment
Start with a small set of results whose differences you can explain.
Put the differences in view
Choose Side by side for a pair or Photo grid for a set. Arrange photos lets you place the baseline first. Adjust crop makes the framing comparable without changing the source files.
Keep a comparison image
Select the ratio, panel gap and background, then download PNG or JPG at a 1200, 2048 or 4096 px long edge. Keep your prompt notes separately so you can connect each result with its request.
Compare one creative decision at a time
A focused experiment makes the board more informative than a collection of unrelated outputs.
Composition refinements
Place an initial result beside attempts with a different framing instruction. Compare subject position and empty space before deciding which direction to try next.
Lighting experiments
Combine outputs that explore a small change in light or atmosphere. Keep similar crops so the mood change is easier to assess without the layout becoming a distraction.
Detail review
View product shapes, lettering or character features across candidates. Include the reference when useful, and check the original files before deciding that a small cropped detail is correct.
Make the comparison teach you something
Compare a baseline with a few deliberate changes and keep notes outside the board. Use similar crops when evaluating the same subject; show more of the frame when the experiment concerns composition.
This tool does not run a model, rank results, identify the prompt that made a picture or blend outputs with AI. It places your supplied files in separate panels. Enlarging the export cannot repair an incorrect generated detail.
Need a new source image? Explore the AI image generator and return with your downloaded photos.
Comparing prompt outputs
Can I stitch images from separate generation attempts?
Yes. Download the outputs to your device first, then add them to this page. The stitcher works with supplied image files rather than importing your task history.
Will the board tell me which prompt worked best?
No. It provides layout and crop controls so you can compare the pictures yourself. Keep prompt and settings notes separately, and assess the result against your intended task.
Does stitching these outputs use generation credits?
No. The board and PNG or JPG download are free, without an account or a watermark. Creating new AI images or videos follows the separate sign-in and credit process.
What file limits apply to my candidates?
Add 2–9 JPG, PNG or WebP files, each up to 25 MB. If decoding a very large source exceeds browser memory, resize it before loading. Exports use a 1200, 2048 or 4096 px long edge.
Can I stitch the results into a seamless scene?
No. The tool makes a panel comparison, not a panorama or AI composite. The gap can separate candidates, but overlapping scenes are not aligned or blended.
Are my candidate images uploaded during comparison?
No. Arranging, cropping and downloading happen in your browser. Choosing the completed-image video button saves the finished board locally for up to 24 hours; continuing and signing in uploads that final reference, not the individual candidate files.
Can I carry a chosen comparison board into video?
After downloading, use the completed-image button. The board must be 10 MB or smaller, so choose JPG or reduce the export when needed. Sign in and review the available model, prompt and credit quote. Video receives one composite image; it does not treat each panel as an independent candidate or shot.
Explore motion after reviewing the stills
Once you have compared the visual directions, use the completed-image button to carry your current board into the video workspace. Describe the intended motion and review the model options and cost before generating.