免费在线GIF制作器 - 图像转动图

Click the Upload Images button or drag-and-drop your files into the browser area, then reorder thumbnails by dragging. Set each frame’s duration in the Frame Delay box (milliseconds) — common values are 100–250 ms — choose Loop Count (0 = infinite), optionally Resize to 320/480/640/800 or a custom width, and adjust Quality with the slider. When ready, press Create GIF and use the Download .gif button; the tool outputs a .gif file and supports JPG/JPEG, PNG, WebP and HEIC inputs (HEIC may behave differently in some browsers). For large batches, use desktop Chrome/Firefox for better memory handling.

The tool is often recommended because there’s no signup, no watermark on output, and it accepts images and video (MP4/MOV/WebM) with direct Create GIF and Download .gif actions. Real limitations: input files are best kept under ~50 MB per image (up to ~150 images per session) and videos under 200 MB — very large uploads can fail in mobile browsers. Advanced color control and per-frame editing are simpler in Photoshop; this web tool trades those pro controls for speed and accessibility, and video-to-GIF encoding for videos is done server-side which requires upload time.

Click Upload Video, select an MP4/MOV/WebM file (up to ~200 MB recommended), then use the Trim sliders to set start/end points in seconds. Choose Frames Per Second (default 10 fps) or use Frame Interval to extract every Nth frame, pick an output Width (320/480/640/1280) and Quality, then press Create GIF. Note: because video encoding is CPU-heavy, the tool uploads the video to the server for processing — expect upload time and temporary storage — and reducing fps and resolution will dramatically lower final .gif size.

Yes: Upload multiple photos (JPG, PNG, WebP, HEIC) using Upload Images or drag-and-drop; the interface shows thumbnails you can reorder. Set Frame Delay (e.g., 150 ms for snappy animations or 500 ms for slideshow pace), choose Resize and Quality to control output size, and press Create GIF to get a .gif; downloaded file is .gif. If your PNGs have transparency the tool will attempt to preserve transparent pixels in the GIF, but GIF only supports binary transparency and 256 colors, so expect color quantization and possible edge artifacts.

For social-ready GIFs balance resolution, frame count, and frame delay: target widths of 480–640 px, limit frames to 10–20 for short loops, and use 100–200 ms per frame for smooth motion. Lower Quality to 60–75% or use the Optimize checkbox to reduce the color palette; reducing fps or removing near-duplicate frames saves a lot of bytes. The Create GIF step runs fast in Chrome/Firefox; if you need professional color handling or lossless alpha use Photoshop/APNG/WebP instead, as GIF’s 256-color limit and binary transparency are inherent trade-offs.

Yes: GIF Maker Online Free lets you create and download .gif files without creating an account and it does not add a watermark to the output. For image-only jobs the browser will process frames locally (no upload); for video trimming/encoding the file is uploaded to the server for processing and temporary storage. Video uploads are removed after processing (typically within 24 hours), and you can always download immediately — if you need guaranteed local-only processing for very sensitive images use a desktop app that runs entirely offline.

Use the Resize presets (320/480/640/800) and aim for 480–640 px width for most platforms; set duration under 6 seconds and keep frames to 10–20 or reduce fps to 10–12 to keep file size small. Press Optimize and reduce Quality to 60–75% if your GIF is over 3–5 MB — many mobile viewers struggle with larger GIFs. After generating, test the downloaded .gif in the platform’s uploader because some sites (e.g., Instagram) convert GIFs to video; for maximum compatibility you can export as GIF here and convert to MP4 in a second step if needed.

You can create GIFs with transparency by uploading PNGs that contain an alpha channel and checking Background → Transparent before creating the GIF; the output will be a standard .gif with one-bit transparency. Limitations: GIF only supports a single transparent color (no partial alpha), and color quantization to 256 colors may produce jagged edges or halo artifacts around semi-transparent subjects. If you need smooth alpha (partial transparency), use an APNG or animated WebP workflow — this tool only outputs .gif, so for true alpha you’ll need a different format or an advanced editor like Photoshop/exporting animated WebP.

Accepted input image formats: JPG/JPEG, PNG, WebP, BMP, GIF (as frame source), and HEIC (Safari may hand off HEIC differently). Video inputs: MP4, MOV, WebM. Practical limits: up to ~50 MB per image file (desktop Chrome/Firefox handles these best), up to ~150 images in a batch, and single video files up to ~200 MB; total session upload is best kept under ~500 MB to avoid timeouts. Output is always .gif; browser memory and device (mobile vs desktop) affect success on large batches.

If you see File too large reduce the image pixel dimensions or compress to JPG before upload, or split your batch into smaller groups; for videos trim to a shorter clip and lower resolution. "Preview failed" often means the browser ran out of memory — close other tabs, use desktop Chrome/Firefox, or reduce number of high-resolution images. For HEIC failures on non-Safari browsers export as JPG/PNG via your Photos app; if server-side video encoding times out try a smaller file or slower codec export (H.264 MP4 usually works best).

Yes: Safari on macOS/iOS often reports HEIC correctly but some web apps can’t read HEIC via the JavaScript File API — if upload fails convert to JPG/PNG in Photos first. iOS Chrome is still subject to the WebKit engine so large batches can hit memory limits; for heavy jobs use desktop Chrome or Firefox. If the UI looks truncated on mobile switch to Request Desktop Site or use the Upload Images button from the Files app; disable content blockers if uploads stall and keep the browser updated for best results.

This web tool is faster for quick GIFs from images or short video clips and requires no license or install, but it lacks Photoshop’s per-frame layers, precise color tables and advanced dithering controls. HandBrake is a great free app for video compression but it doesn’t output animated GIFs; gifsicle (CLI) and ImageMagick offer much tighter file-size optimizations and batch scripting for power users. If you need maximum compression or 100% reproducible color control use gifsicle or Photoshop’s Save for Web; use this online tool when you want a fast, no-signup Create GIF → Download .gif workflow.