Bring a still photo to life with a slow, smooth pan and zoom. Drag a start frame and an end frame on your picture, pick the duration, easing and aspect ratio, watch the live preview and export an MP4 clip for slideshows, documentaries, Reels or YouTube. The video is made on your own device; the photo never leaves your browser.
Last updated:
1. Set the start and end frames
Start
End
2. Preview
0.0 / 6.0 s
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How to use the Ken Burns Effect Maker
Choose a photo or drop one on the box. A sample photo is loaded so you can try the tool straight away.
Set the start frame (green): drag it to move, drag a corner to zoom. Then select End and place the orange end frame the same way, or press a preset such as Zoom in.
Pick the timing: duration, easing and zoom motion. The preview on the right loops the movement.
Choose the output: aspect ratio, resolution, frame rate, quality and an optional fade.
Press Create MP4, check the result in the player and press Download.
How the pan and zoom is calculated
Each frame of the video is a crop of your photo scaled to the output size. The start and end frames are two crop rectangles with the same aspect ratio as the video. For a frame at progress t (0 at the start, 1 at the end) the tool first applies the easing curve, e = ease(t), and then interpolates the crop:
Natural (steady zoom): crop width w = wstart × (wend / wstart)e. Because the width changes by the same percentage every frame, the zoom speed looks constant. The crop position moves in proportion to the size change, so a single point of the photo stays fixed, just like an optical zoom.
Linear crop size: w = wstart + (wend − wstart) × e and the centre moves in a straight line at the same rate. Zooms in this mode appear to accelerate toward the tight end.
The zoom percentage shown under the photo is the widest possible crop divided by the frame's crop width, so 100% shows as much of the photo as the chosen aspect ratio allows and 200% shows half the width.
Easing curves
Easing
Formula (t from 0 to 1)
Feel
Smooth (ease in-out)
0.5 − 0.5·cos(πt)
Starts and ends gently; the classic documentary look
Strong ease in-out
4t³, then 1 − (−2t + 2)³ / 2
Noticeable acceleration, fast middle
Linear
t
Constant speed; best when clips are joined back to back
Ease in
t³
Slow start that speeds up; good for a dramatic ending
Ease out
1 − (1 − t)³
Quick start that settles on the end frame
Tips for a good Ken Burns clip
Keep the move subtle: a zoom between 100% and 130-160% over 6-10 seconds feels calm, while big zooms over short durations feel rushed.
Move toward the story: end on a face, a sign or a detail you want viewers to notice.
For 1080p video with a 150% zoom, the photo should be at least about 2,900 pixels wide (1920 × 1.5) to stay sharp.
Vary the direction between photos in a slideshow (in, out, left, right) so the sequence doesn't feel repetitive.
Use 60 fps for slow pans across detailed photos; it reduces visible judder on high-contrast edges.
Combine the exported clips with music in the Slideshow Maker or any video editor.
Frequently asked questions
What is the Ken Burns effect?
It is a slow pan and zoom across a still photograph that makes the picture feel like moving film. The technique is much older than its name, but it became widely known through documentary filmmaker Ken Burns, who used it constantly on archival photos. Video editors such as iMovie later named their pan-and-zoom feature after him.
How do I make a photo zoom in slowly?
Leave the start frame covering the whole photo, select End and make that frame smaller around the subject you want to finish on (or press Zoom in). A duration of 5-10 seconds with Smooth easing gives the classic gentle documentary look.
What does the Natural zoom motion setting do?
When the crop size changes linearly, the zoom seems to speed up towards the end because each step is a larger percentage of the shrinking frame. Natural mode changes the crop size geometrically, so the zoom feels steady, and moves the frame so that one point of the image stays fixed, like a real camera zooming. Choose Linear crop size if you prefer the simpler movement.
Why does my video look blurry when zoomed in?
The tightest crop is enlarged to the full video size. If a 900-pixel-wide part of the photo becomes a 1920-pixel-wide video frame, it is upscaled more than 2×. The tool warns you when this happens; use a higher resolution photo, zoom in less or choose 720p.
Which aspect ratio should I use?
Use 16:9 for YouTube, TVs and most slideshows, 9:16 for Instagram Reels, TikTok and YouTube Shorts, 1:1 or 4:5 for Instagram feed posts, and 21:9 for a cinematic widescreen look. Same as photo keeps your picture's own shape.
Will the MP4 play everywhere?
In Chrome, Edge and Safari the clip is encoded as H.264 MP4, which plays on practically every phone, computer, TV and editing app. If a browser has no H.264 encoder the tool uses VP9 inside MP4 or records a WebM file in real time, and tells you before you export.
Is my photo uploaded?
No. The photo is decoded, animated and encoded entirely by your browser on your own device. Nothing is sent to a server, so it also works with private family pictures.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.