Image Sequence Previewer

What Is an Image Sequence Previewer?

An image sequence previewer lets you load a series of numbered image frames and play them back as an animation directly in your browser. It is the fastest way to check a render sequence, a sprite sheet export, or a frame-by-frame animation without opening a video editor.

If you have ever rendered a 3D animation as individual PNG frames and needed to quickly check if the motion looks right, this is the tool for that.

Who Uses Image Sequence Previewers?

• 3D artists and animators checking render outputs from Blender, Cinema 4D, Maya, or 3ds Max before compositing
• VFX artists reviewing frame sequences from Nuke or After Effects exports
• Game developers previewing sprite animations exported as individual frames
• Motion designers doing a quick sanity check on a frame sequence before importing into Premiere or DaVinci Resolve
• Stop-motion animators reviewing frame captures before final edit

The alternative is importing the sequence into a video editor just to preview it, which takes several minutes. This tool does it in seconds.

Key Features

• Drag and drop batch loading - select all your frames at once and drop them in
• Automatic frame ordering - frames are sorted by filename so frame_001.png through frame_300.png play in the correct order
• Adjustable playback speed - set the FPS from 1 to 60 to match your target frame rate
• Frame scrubber - drag the timeline to jump to any specific frame
• Frame counter - see the current frame number and total frame count at a glance
• Supports PNG, JPG, and WebP - works with the most common render output formats
• Fully private - your render files never leave your device

How to Preview an Image Sequence

1. Select all your frame files (for example, render_001.png through render_240.png)
2. Drag them onto the tool or use the file picker to upload them all at once
3. The tool sorts them by filename and loads the sequence
4. Set your target FPS and press Play

You can also drag the scrubber to step through frames manually and check specific moments in the sequence.

Naming Your Frames for Best Results

The tool sorts frames alphabetically by filename. For correct ordering, use zero-padded numbers in your filenames.

Correct: frame_001.png, frame_002.png, ..., frame_100.png

Incorrect: frame_1.png, frame_2.png, ..., frame_10.png (this would sort as 1, 10, 100, 2, 20...)

Most 3D software and render engines use zero-padded numbering by default, so this is usually not an issue.

Frequently Asked Questions

How many frames can I load at once? There is no hard limit. The tool loads frames into your browser's memory, so the practical limit depends on your device's RAM. Most modern computers handle 500 to 1000 frames at standard render resolutions without issues.

What frame rates are supported? You can set any FPS from 1 to 60. Common values are 24 (film), 25 (PAL video), 30 (NTSC video), and 60 (games and high frame rate content).

Can I export the sequence as a video or GIF? This tool is focused on preview playback. To export as a GIF, use the Image to GIF tool. For video export, import the sequence into your video editor.

Does this work with alpha channel (transparent) PNG frames? Yes. PNG frames with transparency are displayed correctly with the transparent areas shown against a neutral background.

Are my render files uploaded anywhere? No. Everything runs locally in your browser. Your files are never sent to any server.