Free Video to GIF Converter
100% Private · No Uploads · No Account · Browser-Based
Trim any MP4, WebM, or MOV clip to an animated GIF right in your browser. Mark your start and end points, choose resolution and frame rate, and download. Powered by FFmpeg WebAssembly — your video never leaves your device.
Who Uses This Tool?
Social Media Creators
Loop a reaction, highlight reel, or product demo from a screen recording. GIFs autoplay silently on most platforms without requiring a video player.
Developers & Technical Writers
Capture a short UI interaction or terminal session and embed it in a README or documentation site. GIFs work everywhere without video hosting.
Marketers & Community Managers
Pull a key moment from a product video or event recording and share it in Slack, Discord, or email where video embeds are cumbersome.
Educators & Presenters
Create looping animations from lecture recordings or tutorial clips to illustrate concepts in slides, blog posts, or course materials.
How SimpleTool Compares
| Feature | SimpleTool | Desktop App | Online Service |
|---|---|---|---|
| Video stays on your device | ✅ | ✅ | ❌ |
| Free with no watermark | ✅ | ❌ (paid) | ⚠️ Limited free tier |
| No account required | ✅ | ✅ | ❌ |
| Works in the browser | ✅ | ❌ | ✅ |
| High-quality palette GIF | ✅ | ✅ | ⚠️ Varies |
| Trim to exact moment | ✅ | ✅ | ⚠️ Sometimes |
| Safari iOS support | ✅ | N/A | ✅ |
Tips for Smaller, Sharper GIFs
Keep clips short
GIF file size grows linearly with duration. Clips under 5 seconds stay small enough to share anywhere. Use the Mark Start / Mark End buttons to cut precisely.
Choose 10 fps for most content
10 fps produces fluid-enough motion for most content at roughly half the file size of 24 fps. Use 5 fps for mostly-static clips or meme-style text overlays.
Use 480 px width as a starting point
480 px balances sharpness and file size. Scale down to 320 px for messaging apps with tight size limits, or up to 640 px for documentation embeds where quality matters more.
Prefer clips with limited color variety
GIF supports only 256 colors per frame. Screen recordings, simple animations, and line-art style clips compress far better than high-motion, full-color video.
Limitations
- GIF supports only 256 colors per frame — photographic video will appear posterized.
- On Safari for iOS, conversion uses a canvas fallback (no FFmpeg) which may be slower for long clips.
- The FFmpeg WebAssembly core (~20 MB) is downloaded from a CDN on first use and then cached locally.
- Very long clips (>30 s at high resolution) may produce GIFs too large to share on most platforms.
- Audio is not preserved in GIF output — animated GIFs are always silent.
Frequently Asked Questions
Does my video get uploaded to a server?
No. The entire conversion happens in your browser. FFmpeg runs as a WebAssembly module locally — your video bytes never leave your device. There are no server uploads at any point.
What video formats are supported?
MP4 (H.264/H.265), WebM (VP8/VP9), MOV (QuickTime), AVI, and MKV. If your browser can play the file, the converter can process it.
Why does the first conversion take so long to start?
The first time you use the tool, it downloads the FFmpeg WebAssembly core (~20 MB) from a CDN. This is cached by your browser, so all subsequent conversions start instantly.
I see a "canvas fallback" notice — what does that mean?
On Safari for iOS and some older browsers, SharedArrayBuffer is unavailable, which is required to run FFmpeg WebAssembly. In that case the tool automatically falls back to a canvas-based frame extraction method. The output quality is slightly lower but the tool still works — no action needed.
How do I trim the video?
Click Play to start playback, then click "Mark Start" at the moment you want the GIF to begin and "Mark End" where you want it to stop. The green and red markers on the timeline show your selection. You can also click anywhere on the timeline to seek to that position.
How large a GIF will I get?
GIF size depends on resolution, frame rate, duration, and how much motion is in the clip. The live size estimate below the settings panel gives a rough pre-conversion figure. To keep GIFs under 5 MB — a common sharing limit — try 480 px width, 10 fps, and clips under 5 seconds.
Is there a clip length limit?
There is no hard limit, but very long clips produce enormous GIFs. For best results keep clips under 15 seconds. Long conversions may slow down low-memory devices.
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