GIF Compressor
GIF Resizer — Resize Animated GIFs Online
Change GIF dimensions in your browser. Scale by percentage or set a max width — keep the animation, shrink the file, no upload required.
- Free GIF resizer
- Keeps animation & timing
- Private — runs on your device
- No watermark
GIF Resize Tool
Drop your GIF here or click to upload
Select an animated GIF to resize its dimensions
Original GIF
How to Resize a GIF in 3 Steps
Upload Your GIF
Drop an animated GIF onto the tool or click to choose a file from your device.
Choose How to Scale
Pick a percentage, a max width preset, or enter a custom width — aspect ratio stays locked.
Download
Preview the resized animation, then download the new GIF. Nothing was uploaded to a server.
When You Need a GIF Resizer
Same idea as compressing — different job. These are the situations where changing dimensions beats squeezing the same pixels harder.
Chat App Size Limits
Discord, Slack, and similar apps reject oversized GIFs. Resize to 320–480px so the animation fits the limit and still looks sharp in chat.
Faster Web Pages
A 1200px GIF on a mobile layout is wasted weight. Cap the width to what the layout actually shows and pages load sooner.
Mobile-Friendly Shares
Phone screens and messaging previews rarely need full desktop resolution. A smaller GIF saves data and opens faster on the go.
Sticker & Emoji Platforms
Reaction packs and sticker stores expect fixed widths. Match their size guide once instead of guessing in an editor.
Why Resize a GIF?
Oversized animated GIFs waste bandwidth. If your GIF is 1200px wide but you only need it at 480px for chat or a mobile page, resizing is often the fastest way to cut file size — frequently more effective than compression alone. A GIF resizer scales every frame while preserving frame delays, loops, and transparency.
How This GIF Resizer Works
The tool uses gifsicle in WebAssembly. You can scale by a percentage (75% or 50%), constrain max width (640 / 480 / 320 px), or type a custom width for targets like 500px. Aspect ratio stays locked. Processing stays on your device — the GIF is never uploaded to a server.
When Should You Resize vs. Compress?
Resize when the pixel dimensions are larger than you need for display. Compress when dimensions are already right but the file is still heavy — then use our GIF compressor with a quality preset. Many people do both: resize first, then compress for the smallest shareable result.
Tips for Better Results
- Match the max width to where the GIF will appear (chat vs. full-width blog).
- 50% scale often halves both axes and can cut file size dramatically.
- After resizing, run GIF compression if you still need to hit a size limit like 2 MB or 5 MB.
Common Platform GIF Sizes
Limits change over time, but these targets cover most “what size GIF for…” searches. Prefer the width that matches how the GIF will actually display — then compress only if the file is still over the platform’s megabyte cap.
| Platform / use | Target width | Notes |
|---|---|---|
| Discord (reactions / stickers) | 320px | Small width plus a tight file-size limit; Nitro raises the MB cap. |
| Slack | 480px | Works well for channel shares; still watch total file size. |
| X (Twitter) posts | 640px | Good default for timeline previews without oversized exports. |
| Email attachments | 480–640px | Many clients cap attachments; smaller dimensions help more than fancy encoding. |
| WeChat / messaging (2 MB caps) | 320–480px | Hit a modest width first when you must stay under ~2 MB. |
Resize vs Crop vs Compress
These three jobs sound similar but fix different problems:
- Resize scales the whole frame — every pixel shrinks or grows while keeping the same composition. Use it when the GIF is simply too wide or tall for the layout.
- Crop cuts edges or a region without changing the remaining pixels’ density. Use our GIF cropper when you need a different framing or square sticker, not a smaller full scene.
- Compress keeps width and height the same and optimizes encoding — frame diffs, lossy LZW, and palette size. Use our GIF compressor when dimensions are already correct.
Searching for a “GIF cropper”? Crop first if the subject is off-center, then resize to the platform width, then compress if you still need fewer megabytes. That order wastes the least quality.
How Scale Affects File Size
Pixel count is width × height. Scale both axes by 50% and you keep only about 25% of the pixels in every frame (0.5 × 0.5 = 0.25). Scale to 75% and you keep roughly 56% of the pixels. Because a GIF stores image data for each frame, that drop in pixels usually translates into a much lighter file — often a bigger win than running lossy compression on an oversized original.
Example: a 1200×800 GIF shown at 600×400 on a phone does not need those extra pixels. Resizing to 50% (or a 600px custom width) removes half the width and height from every frame before you even touch the color palette. Compression can still help afterward, but dimensions are the first lever when the export is larger than the display.
That is also why a dedicated GIF resizer matters next to a compressor: same privacy model (browser-only), same animation-safe engine, different math. Use scale or custom width when KD-friendly queries like “resize GIF to 500px” match what you actually need.
Frequently Asked Questions
Does resizing a GIF reduce image quality?
Resizing changes how many pixels each frame has. Scaling down removes detail you would not see at the smaller display size, so it usually looks fine when shown at the new dimensions. Scaling up stretches pixels and can look soft or blocky — prefer starting from a larger original when you need a bigger GIF. Aspect ratio stays locked, so you will not get stretched animation.
What size should a GIF be for Discord?
For Discord reactions, stickers, and chat embeds, a max width around 320px is a solid default. Larger GIFs (480–640px) can work in channels, but Discord also enforces file-size limits that vary by Nitro status. If your GIF is rejected for being too large, resize to 320px first, then use our GIF compressor if you still need to cut megabytes.
Can I resize a GIF on my phone / iPhone?
Yes. This GIF resizer runs in the browser on phones and tablets — open the page in Safari or Chrome, upload a GIF from Photos or Files, pick a scale or width, and download the result. Processing stays on your device, so you do not need a desktop app or an account.
How do I make a GIF smaller than 8 MB?
Start by resizing. If the GIF is much wider than where it will appear, drop it to 640px, 480px, or 50% scale — that often cuts file size more than compression alone because every frame loses pixels. If it is still over 8 MB (or another chat/email limit), run the resized file through our free GIF compressor with a stronger preset.
Does resizing keep the animation and frame timing?
Yes. The tool scales every frame while preserving delays, loop counts, and transparency. You get a standard animated GIF, not a single still frame. Preview the result before downloading to confirm the motion still feels right.
What is the difference between resizing and compressing a GIF?
Resizing changes pixel dimensions (width and height). Compressing keeps the same dimensions and optimizes how frame data, LZW encoding, and the color palette are stored. Use resize when the GIF is simply too big on screen; use compress when dimensions are already correct but the file is still heavy. Many people resize first, then compress.
Why can't I resize this GIF?
Common causes: the file is not a valid GIF (wrong extension or corrupted header), it exceeds the upload size limit, or your browser ran out of memory on a very large, long animation. Try a smaller source, close other tabs, or export fewer frames from your editor. If processing fails, the honest answer is often that the file is too heavy for in-browser tools — shrink it in your editor first, then finish here.
Is my GIF uploaded to a server?
No. Resizing runs entirely in your browser with a WebAssembly engine. The GIF never leaves your device and is not sent to our servers or a third-party API. After the page has loaded, you can even go offline and still resize.
Related tools
More free GIF utilities that run locally in your browser.