How to use the MP4 to GIF converter
Step 1 — Add your video
Drop a file onto the panel or click to browse. MP4, WebM, MOV, AVI, MKV and M4V all work. The file is read straight into the page — there is no upload, no queue and no waiting for a server. A preview player appears immediately with the duration and dimensions.
Step 2 — Trim to the part you want
This is the step that matters most. Scrub the preview to the moment you want, then press Use playhead beside Start or End — or type the seconds directly, or click along the range bar to move the nearer edge. Play selection plays back exactly what will be converted, so you can check it before spending the encode.
Step 3 — Choose frame rate and width
12 frames a second and 480 pixels wide suit most uses and are the defaults. Both settings multiply the file size, so lower them for anything going into an email or a chat message. The panel shows how many frames will be encoded as you change them.
Step 4 — Pick the colour handling
Leave this on Optimised palette unless you have a reason not to. It runs the clip twice: once to work out the best 256 colours for the motion in your specific footage, then again to encode using them. The difference against a single-pass encode is obvious on gradients, skin tones and anything with a soft background.
Fine-tuning: dithering, looping, direction
Dithering decides how the encoder fakes colours that are not in the 256-colour palette. Sierra is a good default; Floyd–Steinberg is smoothest on gradients; Bayer produces the smallest files; None gives flat colour and the sharpest edges, which suits screen recordings and line art. You can also set the loop count or reverse the clip.
Step 5 — Convert and download
The progress bar names the stage it is on, including the one-off engine download on first use. When it finishes you get the GIF on a chequerboard so transparency is visible, along with its size, dimensions, length and frame count. Download it, or adjust a setting and convert again — the engine stays loaded, so the second attempt is much faster.
About the MP4 to GIF converter
This tool turns a section of a video into an animated GIF, entirely inside your browser. It uses ffmpeg compiled to WebAssembly — the same conversion engine behind most professional video tooling — running as code on this page rather than on a server.
That architecture has a consequence worth stating plainly: your video is never uploaded. Nothing is transmitted, nothing is queued on someone else’s machine, and nothing is deleted later because nothing was stored in the first place. For screen recordings of internal software, unreleased product footage or anything with a person in it, that difference is the whole point.
Why the output looks better than most converters
A GIF can only hold 256 colours per frame, while your video holds millions. How those 256 are chosen is the single biggest factor in how the result looks. Most online converters encode in one pass, letting the encoder pick colours blindly as it goes — which is what produces the banded skies, blotchy skin tones and muddy gradients that make GIFs look dated.
This tool uses the two-pass palette method. The first pass analyses your actual clip and builds a palette suited to the colours and motion in it; the second encodes against that palette. It takes slightly longer and produces a noticeably cleaner, often smaller GIF. You can switch to a single global palette or a fast no-palette encode if you prefer speed.
Who this is for
- Anyone making a product demo — a short looping GIF still works everywhere a video does not, including README files and many chat apps.
- Support and documentation, where a five-second clip explains a bug faster than a paragraph.
- Social posts and reaction clips that need a specific few seconds out of a longer video.
- Anyone handling sensitive footage who cannot upload it to a third-party service.
The settings explained
Trim — start and end
Defines which part of the video becomes the GIF. Everything else about file size follows from this: a GIF stores complete frames, so doubling the length roughly doubles the file. The tool defaults to the first five seconds rather than the whole video for exactly that reason.
Frame rate
How many frames per second the GIF holds. 12 is smooth enough for most motion and half the size of 24. Drop to 8 for slideshow-like content or where size is critical; go to 20 or 24 only for fast motion where stutter would be obvious. Note that a GIF’s frame timing is stored in hundredths of a second, so very high frame rates are approximated anyway.
Width
The output is scaled to this width and the height follows automatically to preserve the aspect ratio. Scaling uses the Lanczos filter, which keeps detail far better than the default. 480 px suits most embeds; 320 px is right for chat; “Keep original” is rarely a good idea for a GIF.
Dithering
How the encoder handles colours that are not in the palette. Sierra is a balanced default. Floyd–Steinberg gives the smoothest gradients but adds noise that costs file size. Bayer produces a regular pattern that compresses very well — the smallest files, at the cost of a visible texture. None gives flat blocks of colour and the crispest edges, which is usually best for screen recordings, text and line art.
Looping
GIFs loop forever by default, which is what almost everyone wants. You can also set two or three plays, or a single play that stops on the last frame.
Colour handling
Optimised palette builds a palette from the motion in your clip — best quality, two passes. Single global palette analyses the whole clip as one image, which is better for footage with a static background. Fast skips the analysis entirely for a quick preview.
Keeping GIF file sizes down
GIFs are large because the format stores full frames with no motion compression, using technology from 1987. A ten-second clip at 24 fps and 800 px is 240 full images. In rough order of impact:
- Trim harder. Length has the biggest effect of anything. Three seconds instead of ten cuts the file by roughly two thirds.
- Lower the frame rate. 12 fps instead of 24 roughly halves the size, and most viewers will not notice.
- Reduce the width. Halving the width quarters the pixel count.
- Try Bayer dithering, or none. Dither noise defeats the compression GIF relies on; flat colour compresses far better.
- Prefer simple backgrounds. Camera grain and busy scenes are expensive; screen recordings with flat panels are cheap.
If the result is still too big, the honest answer is that GIF may be the wrong format. An MP4 or WebM of the same clip is typically five to ten times smaller at better quality — use GIF only where the destination genuinely cannot take a video.
Frequently asked questions
How do I convert an MP4 to a GIF?
Drop the video in, trim to the seconds you want, leave the frame rate and width at their defaults, and press Convert. The whole thing happens in your browser and the GIF downloads straight to your device.
Can I convert only part of a video?
Yes — that is what the trim controls are for, and it is usually what you want. Scrub the preview, press Use playhead for the start and end, and check it with Play selection before converting.
Is my video uploaded to a server?
No. The conversion runs in your browser through ffmpeg compiled to WebAssembly. The only network request is the one-off download of the conversion engine itself; your video stays in the page’s memory and is discarded when you close the tab.
Why is my GIF so large?
Because GIF stores every frame in full with no motion compression. Shorten the clip, lower the frame rate to 12 or 8, reduce the width, and try Bayer or no dithering. Those four changes together commonly cut a file by 80 per cent.
What frame rate should I use for a GIF?
12 frames a second is the sweet spot for most content. Use 8 for slow or slideshow-like footage, and 20 to 24 only where fast motion would visibly stutter. Higher rates add size quickly for diminishing returns.
Why does my GIF look grainy or banded compared with the video?
Because GIF allows only 256 colours per frame. Use the optimised palette setting, which picks those 256 based on your actual footage, and try Floyd–Steinberg dithering for gradients. Banding is worst on skies, shadows and slow fades.
What is the maximum video size I can convert?
About 300 MB, limited by browser memory rather than by any rule. Files above 60 MB trigger a warning because conversion becomes slow. Trimming to a few seconds is far more important than the source file’s size.
Which video formats can I convert?
MP4, WebM, MOV, AVI, MKV, M4V and most other common containers, since ffmpeg handles the decoding. Very unusual codecs occasionally fail, and the tool says so rather than producing a broken file.
Why does the first conversion take longer?
The conversion engine is about 30 MB and downloads once, on your first conversion. Your browser caches it, so every conversion after that starts immediately — which is why adjusting a setting and converting again is much quicker than the first run.
Can I make the GIF loop only once, or play in reverse?
Both. Set the loop count to a single play, and switch Direction to Reversed to play the clip backwards.
Does it work offline?
Once the engine has been downloaded and cached, yes. You can load the page, disconnect, and still convert — which is also the simplest way to confirm nothing is being uploaded.
Is the MP4 to GIF converter free?
Free, with no sign-up, no watermark and no limit on how many conversions you run.