Convert video files to animated GIFs with frame rate, size, and duration controls.
An animated GIF is a video frozen into the GIF format, and this page makes that trade. You choose a video file, set the frame rate, output width, and start and end times, and the clip is decoded, resized, and re-encoded into an animated GIF you can save. Everything runs in the browser; the file never leaves your machine. Two things surprise most users. Each GIF frame is limited to 256 colors, so smooth gradients like skies and skin band into visible stripes. And the output is often larger than the source video, because GIF compression rewards flat, still pictures and punishes noise and motion.
A concrete input and expected output from the current implementation.
Input
concert.mp4 - start 0:08, end 0:20, frame rate 15 fps, width 480 px
Expected output
A 480x270 GIF covering the trimmed 12 seconds, made of 180 frames, looping silently.
End minus start is 12 s (20 - 8), and 12 s at 15 fps is 180 frames. A 16:9 source resized to 480 px wide is 270 px tall. The byte size is deliberately not stated: it depends on the footage's motion and color complexity, not just these settings.
The GIF holds the trimmed window: end minus start seconds of footage sampled at the chosen frame rate, so the frame count is duration times fps. That count is the main lever on size: a 12-second clip at 15 fps is 180 frames. GIF stores delays in hundredths of a second and is not built for smooth motion, so 8-15 fps is the practical range; higher rates mostly add bytes, not visible smoothness.
Each GIF frame carries an 8-bit palette - at most 256 colors, picked to fit that frame. Photographed video almost always has more than 256 distinct colors, so the encoder approximates and smooth gradients turn into visible bands. Noisy footage keeps changing the palette, which is one reason phone-video GIFs get large. Shrinking the width helps most, since halving each side quarters the pixels.
GIF stores each frame as its own 8-bit picture, while modern video codecs build most frames from the ones before them and record only the differences. Busy or noisy footage can come out several times the size of the MP4 it came from. Trim the duration, drop the frame rate, or shrink the width to bring it down.
No. The GIF format has no audio track, so the result plays silently and loops. That is the norm for GIFs and usually the point of making one. If the clip needs sound, convert nothing and keep it as a video file; if it must be silent and self-contained, the GIF is right.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Convert CSV data into structured JSON arrays or objects with automatic type detection.
Transform JSON arrays and objects into downloadable CSV spreadsheet format.
Convert YAML configuration files to JSON format with validation and formatting.
Parse XML documents and convert them to equivalent JSON structure with attributes.
Convert tab-separated values to comma-separated format with proper escaping.
Convert numbers between binary, octal, decimal, and hexadecimal bases.