Trim GIF Online — Free Loop Finder

A free browser-based GIF trimmer with frame-level precision and automatic perfect loop detection. Select frames with visual thumbnails, trim losslessly, reverse or bounce, adjust speed — runs via WebAssembly in your browser. No watermark, no registration.

How to Trim a GIF

1
Upload your GIF

Drop an animated GIF file or click to browse. Files up to 100 MB are supported. The tool instantly analyzes frames and builds a visual timeline.

2
Select frame range

Drag the trim handles on the thumbnail strip to select start and end frames. Use arrow keys for frame-by-frame precision. Preview plays only the selected range.

3
Find perfect loops

Click "Find perfect loops" to scan for seamless loop points. The tool compares frames pixel by pixel and shows candidates with match percentages. One click to snap to the best loop.

4
Trim and download

Choose mode (normal, reverse, bounce), adjust speed and loop count, then click "Trim GIF". The trimmed GIF downloads instantly.

Cut, reverse, and find perfect loops in animated GIFs

Drop GIF file here
GIF ·
Analyzing GIF...
Upload a file to start
Frames: FPS: Colors:
Frame 0 / 0
0.0s / 0.0s
🔄 Loop Detection
Compares the first frame with potential end frames to find seamless loop points
1×
Mode
Loop
Optimization
0
256
✅
Trim Complete
Trimmed GIF

Features

Frame-accurate trimming with visual thumbnail timeline and drag handles Automatic perfect loop detection — finds where the animation loops seamlessly with similarity percentage Three playback modes: normal, reverse, and bounce (ping-pong) Speed adjustment from 0.25x to 4x with per-frame delay control

Frequently Asked Questions

How does the loop detection work?

The tool extracts frames and compares each candidate end frame with the first frame pixel by pixel. Frames with high visual similarity (90%+) are highlighted as perfect loop points on the timeline.

Is the trimming lossless?

Yes, by default. The tool uses gifsicle which modifies the GIF container to remove frames without re-encoding the remaining ones. You can optionally enable lossy compression for smaller file sizes.

What does Bounce mode do?

Bounce (ping-pong) mode plays the GIF forward then backward, creating a smooth back-and-forth animation. This is great for creating seamless loops from non-looping animations.

Can I trim GIFs on my phone?

Yes, the tool works on any device with a modern browser. All processing happens locally — no app installation required.

What is the maximum file size?

GIF files up to 100 MB are supported. Since processing happens in your browser, very large files may take longer on devices with limited RAM.

💡 Want us to improve this tool just for you?

We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.

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Who is this tool for?
🎬 Video Creators ✨ Content Creators
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