Compresser un GIF en ligne

What Compresser un GIF does

Animated GIFs are often several megabytes, which is too large for many chat apps, forums and emails. Compressing a GIF reduces three things: the number of colors in each frame, the pixel size of the animation and the number of frames.

The tool decodes every frame to full pixels, applies your settings, builds a new color palette for each frame and writes a new GIF. When frames are skipped, their display time is added to the frames that remain, so the animation keeps its original duration.

Comment utiliser Compresser un GIF

1. Déposez les fichiers que vous voulez alléger.
2. Choisissez un niveau de compression, ou gardez le réglage recommandé.
3. Cliquez sur Compresser et comparez l'ancienne et la nouvelle taille.
4. Téléchargez les fichiers allégés.

When to use Compresser un GIF

• Get a reaction GIF under the upload limit of a chat app, forum or messaging service.
• Shrink an animated GIF in a README, help article or newsletter so the page loads faster.
• Reduce a screen recording saved as GIF before sharing it in a bug report or support ticket.
• Make a large animated banner or sticker lighter for a website without converting it to video.

Settings explained

Colors

Sets the palette size of each frame, from 8 to 256; the default is 128. Fewer colors give smaller files but add visible banding in gradients and skin tones. 64 often works for cartoons and screen recordings.

Scale

Reduces the width and height to a percentage of the original, from 10 to 100. Scaling to 50 percent cuts the number of pixels to a quarter, which usually saves the most space.

Frames

Keep all frames, Every 2nd frame or Every 3rd frame. Dropping frames makes the file much smaller and the motion less smooth, while the total playing time stays the same.

Qu'est-ce que le format GIF ?

GIF (Graphics Interchange Format) est un format d'image créé par CompuServe en 1987. Il utilise une compression sans perte, gère la transparence et peut contenir des animations. Les fichiers portent l'extension .gif.

GIF was introduced by CompuServe, and the later GIF89a version added animation timing and transparency. Each frame uses a palette of up to 256 colors and is compressed with the LZW algorithm. The LZW patents caused disputes in the 1990s, but they have expired and GIF is now free to use.

GIF is useful for short, simple animations, reaction images and small graphics with few colors, especially where an animation must play without a video player, such as in some email clients, chat apps and older websites.

The 256 color limit makes photos and video look grainy or banded. Animated GIFs are very large compared with the same clip as MP4 or WebM. Each pixel is either fully transparent or fully visible, so edges can look rough.

GIF opens and animates in every web browser, on Windows, macOS, Linux, Android and iOS, and in almost all messaging apps, email clients and image viewers. Some image editors only show or edit the first frame.

Pourquoi utiliser l'outil Compresser un GIF de FansBond

La plupart des convertisseurs en ligne envoient vos fichiers sur leurs serveurs. L'outil Compresser un GIF de FansBond fait tout le travail dans votre navigateur, grâce à WebAssembly et aux API modernes des navigateurs. Vos fichiers restent sur votre appareil, ce qui est plus sûr pour vos photos privées, vos contrats et vos projets non publiés, et c'est souvent plus rapide puisqu'il n'y a rien à envoyer ni à télécharger.

Pas de file d'attente, pas de filigrane, pas de compte. Une fois la page chargée, l'outil continue de fonctionner même avec une connexion lente.

Tips for the best result

• Combine moderate settings, such as 75 percent scale and 128 colors, instead of pushing one setting so far that the image is ruined.
• Use Every 2nd frame for screen recordings and slow movement, where fewer frames are hard to notice. Avoid it for fast action.
• If the GIF is still too large, convert it with the GIF to MP4 tool. The video file is usually many times smaller.
• Check the file size shown after compressing and change one setting at a time to find the smallest result that still looks good.

How Compresser un GIF works in your browser

GIF files can only hold 256 colors per frame, so the tool analyzes each frame, builds the best palette for it and maps every pixel to that palette. Video frames are first extracted with a WebAssembly build of FFmpeg.

The encoder and the GIF decoder run in JavaScript and WebAssembly inside your browser tab. Frame timing, looping and size are written directly into the GIF file, so the result plays the same way in every browser and chat app.

Privacy and security

Most online converters upload your files to a server, process them there and keep a copy for some time. Compresser un GIF works differently: the code is downloaded to your browser once, and your files are read and written only on your device.

You can check this yourself: after the page has loaded, turn off your internet connection and the tool still works. This makes it safe for contracts, IDs, medical records, private photos and unreleased work.