How to Convert MP4 to GIF Online (Free, In Browser)

To convert an MP4 to a GIF, drop your video onto the ByteTools MP4 to GIF Converter, choose a frame rate and output width, click Convert to GIF, then download the looping animation — the whole process runs in your browser and nothing is uploaded. A GIF is a silent, auto-looping image that plays anywhere a static picture can, which is why it is the easiest way to share a short highlight from a video in chat apps, forums, docs and social feeds.

This walkthrough covers the exact steps, what each setting does, and how the in-browser engine keeps your clip private from start to finish.

Step-by-step: MP4 to GIF in four moves

1. Add your video. Drag an MP4 onto the drop zone or click to browse. The tool also reads other common video containers, so you are not limited to MP4.
2. Pick your FPS. The frame rate (5–24 FPS) controls how smooth the motion looks. A lower number means fewer frames and a smaller file; a higher number means smoother movement and a larger file.
3. Set the output width. Choose a width from 240 to 640 pixels. The height scales automatically to keep your original aspect ratio, and a high-quality Lanczos scaler keeps the result crisp.
4. Convert and download. Click Convert to GIF, let the in-browser engine sample and encode the frames, preview the looping result, then download it.

That is the whole flow. There is no account, no queue and no watermark — just a GIF file saved to your device.

What the FPS and width settings actually do

The two sliders are the heart of the tool because a GIF trades quality for compatibility. Unlike video, GIF stores every frame as its own image, so both settings directly shape file size.

Setting	Lower value	Higher value
Frame rate (FPS)	Choppier motion, smaller file	Smoother motion, bigger file
Output width	Small, lightweight GIF	Sharper detail, heavier file

For a reaction clip or a quick UI demo, 10–12 FPS at 320–480 px usually looks great while staying small enough to paste into a message. Reserve 20–24 FPS and 640 px for footage where fluid motion really matters.

Why everything stays on your device

The converter runs a WebAssembly build of ffmpeg entirely inside your browser tab. Your video is decoded, its frames are sampled at your chosen FPS, and a looping GIF is assembled locally — none of it is ever sent to a server. That means private screen recordings, unreleased footage and personal clips never leave your machine. Once the page has loaded, the tool even keeps working offline, so you can make GIFs on a plane or behind a firewall.

Try the converter

Try the MP4 to GIF Converter — free and 100% in your browser.

Frequently asked questions

What frame rate should I choose for a smooth GIF?

For most sharing, 10–15 FPS is a good balance. Go to 20–24 FPS only when the motion is fast and you need it to look fluid, because every extra frame increases the file size.

Can I make a GIF from just part of a video?

The converter turns your loaded clip into a GIF, so trim the video first for the exact moment you want. Use a trimming tool to cut the segment, then drop that shorter clip into the GIF converter for a tight, lightweight result.

Does the GIF loop automatically?

Yes. GIFs loop continuously by default, which is exactly why they work so well for reactions and short demos — the animation restarts on its own wherever it is embedded.

What is the largest video I can convert?

There is no hard limit, but because encoding happens on your own hardware, long or high-resolution clips are slow and produce very large GIFs. A few seconds of footage on a modern desktop browser is the sweet spot.

Related free tools

• GIF to MP4 Converter — go the other way and shrink a GIF into an efficient video.
• Trim Video — cut the exact clip before making your GIF.
• Compress Video — reduce a video's size while keeping quality.
• Resize Video — change dimensions for the platform you are posting to.

Built by ByteVancer

ByteTools is a free product of ByteVancer, a software and web development studio that builds web apps, SaaS platforms and custom software. If you like fast, privacy-first tools like this one, explore what ByteVancer can build for your team or product.