A clip can look vertical without being 9:16
Small crop differences are difficult to notice by eye, but they can move the subject into unsafe edge areas or fail a technical handoff.
Free Music Motion tool
Spotify Canvas Size Checker
Catch the technical rejection before it interrupts your release workflow.
Runs locally in your browser. No upload, account, render slot or server processing.
Drop in the final Canvas file.
We read only the properties needed for a technical preflight.
Processed locally in your browser. Nothing is uploaded.
Your results will appear here.
Why this exists
Solve the small production problem before it becomes an expensive one.
Artists, labels and managers preparing a Spotify Canvas from a music video, cover animation or visualizer.
Duration is easy to miss
A visually complete loop may still fall outside Spotify’s 3–8 second Canvas window after export or trimming.
The wrong source file creates another export
Checking format, dimensions and duration before upload is faster than returning to an editor after Spotify for Artists rejects the asset.
Three-step workflow
1
Choose the final MP4 or JPG
Select the exact file you plan to upload. It is inspected inside your browser and is never uploaded to Music Motion.
2
Review every technical result
The checker reads width, height, aspect ratio, file type and—when the file is video—its real duration.
3
Fix the creative crop, not only the numbers
A passing file can still place a face, logo or focal point too close to a phone edge. Reframe the composition before publishing.
Practical answers
Frequently asked questions
Does this tool upload my Canvas to Music Motion?
No. The file is read locally by your browser. It is not sent to Music Motion, Cloudflare, Supabase or a render queue.
What does Spotify currently require for Canvas?
Spotify’s published guidance specifies 3–8 seconds, a vertical 9:16 ratio, 720–1080 pixels tall and an MP4 or JPG file.
Can a JPG be used as a Canvas?
Spotify lists JPG as an accepted format. A static image passes the format and dimension checks, while duration applies only to an MP4.
Does passing guarantee Spotify approval?
No. This tool checks the measurable file properties. Spotify’s content policy and creative guidelines still apply.
Another free tool
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Calculate a music video’s aspect ratio, matching dimensions and platform format for YouTube, Shorts, Reels, square posts and Spotify Canvas.
Open tool Another free toolAudio Duration to Render Cost Calculator
Calculate the exact Music Motion Render Point cost for an audio-reactive video at 720p, 1080p or 1440p before starting the render.
Open tool Another free toolYouTube Visualizer Thumbnail Generator
Create a branded 16:9 YouTube thumbnail from cover artwork, artist name and release title. Preview and download it locally.
Open toolFrom answer to finished release
Now build the version people will watch.
Bring your track, artwork and result into Music Motion Studio. Layer the scene, connect premium effects to real audio and export the release-ready video.