Crop a GIF Online

Crop a GIF: how it works

Trims the same rectangular region off every frame and re-encodes a tighter animated GIF. You set how much to cut from the left, top, right, and bottom as a percentage, and the timing and loop carry over unchanged.

Applies to

Every frame, identically

Crop input

Left / top / right / bottom %

Keeps

Animation, timing, loop

Side effect

Smaller file (fewer pixels)

Square crop

Trim longer side equally

What to know about the GIF format here

Because the crop is applied identically to all frames, the animation stays aligned; and since cropping removes pixels, it also makes the GIF lighter — the opposite of padding it.

Tips for the best result

• Cropping is a quick way to remove a black border, dead space, or a watermark sitting in one corner of the clip.
• To get a square for feeds that prefer 1:1, trim the longer dimension by equal amounts on both sides until width and height match.
• Fewer pixels per frame means a smaller file, so a tight crop both reframes the subject and trims the file size at once.
• The insets are percentages of the original dimensions, so the same crop setting works regardless of the GIF's exact pixel size.

When to use this

Reach for this when the GIF has more around the subject than you want — borders, empty margins, a stray watermark — or when you need to reframe it to a square or a tighter ratio.

How GIF files behave

• A GIF stores up to 256 colours per frame from a palette it picks for that frame, so flat graphics, logos, line art, and screen recordings reproduce cleanly, while photographic gradients and skin tones can band or dither.
• GIF compression (LZW) is lossless per frame — it never adds JPEG-style blocky artefacts — but because every frame is essentially a full image, the file grows quickly with more frames, more pixels, and more colours.
• Animation timing is stored as a per-frame delay in hundredths of a second, and looping is set by a small repeat marker (the Netscape extension), which is why a GIF can loop forever on its own with no player controls.
• A GIF has no audio track and no real alpha blending — only a single fully-transparent colour — so it is built for short, silent, looping motion rather than full video; a muted MP4 or WebM is far smaller for anything longer than a few seconds.