Converts ICO files to GIF format — favicons and app icons to simple animations, memes, and images on platforms that support animated GIFs natively. All conversion happens locally in your browser with no file size limits.
Runs on Canvas
Content reviewed October 2026 · About Toolzum
Convert PNG images to GIF in your browser — each PNG still encodes to a single-frame GIF locally via the bundled gif.js worker. Stills-only output flattens transparency to white, and downloads are unlimited since nothing is uploaded.
Convert JPG photos to GIF in your browser — each JPG still encodes to a single-frame GIF locally via the bundled gif.js worker. Stills-only output flattens transparency to white, and downloads are unlimited since nothing is uploaded.
Convert WebP images to GIF in your browser — each WebP still encodes to a single-frame GIF locally via the bundled gif.js worker. Stills-only output flattens transparency to white, and downloads are unlimited since nothing is uploaded.
Generate favicon packages — PNG icons plus Apple touch icons — from one image. Note: the .ico file is PNG data renamed (modern browsers only). Ship every platform icon in one pass — local generation, unlimited saves.
Grade videos with 18 filters across Color, Artistic, Blur, and Lighting (grayscale, sepia, pixelate, gaussian blur, vignette, brightness/contrast/saturation) plus a live still-frame preview. Export MP4, WebM, or GIF — local FFmpeg work, unlimited saves.
ICO (Windows Icon) uses lossless (multiple sizes) encoding and is best for favicons and app icons — standard format for website bookmarks and Windows application icons. GIF (Graphics Interchange Format) uses lossy (limited to 256 colors) encoding and excels at simple animations, memes, and images on platforms that support animated GIFs natively. Converting between them lets you take advantage of each format's strengths — for example, using a compressed format for sharing and a lossless format for editing. All conversion happens locally in your browser with no file size limits.
Your still image encodes to a single-frame GIF locally via the bundled gif.js worker (2 workers, quality 10, workerScript /gif.worker.js) using the encodeGif path in ImageCatchAllConverter.
No — output is a single still frame, not an animation. Use the video-to-gif tool to cover animation.
Transparency flattens to white — no transparent option is passed to the encoder, so see-through icon areas become white in the GIF.
No. Conversion runs entirely in your browser and nothing is uploaded, so downloads on this local tool are unlimited.
GIF to ICO
GIF to ICO output is not produced here — GIF input decodes, but Canvas cannot encode ICO, so conversion fails locally. Convert GIF to PNG/JPG/WebP instead — local, unlimited saves.
Bulk Image Format Converter
Convert image batches between JPG, PNG, WebP, and AVIF outputs (JPEG/PNG/WebP/AVIF/HEIC/HEIF/GIF/BMP/ICO/SVG inputs; HEIC via heic2any, SVG rasterized at intrinsic size or 1024px fallback) with a quality slider (10–100, default 80). Pair pages (?from/?to) preset the output. Flat ZIP renamed per file — local, 5-file guest batches, 25 signed-in, 500 Pro.
Batch Image Converter
Convert a batch of images to one output — JPG, PNG, or WebP — at quality 10–100% (default 80%), capped at 4096px longest side, then download everything as a ZIP. Files that fail conversion fall back to their originals inside the same archive — local library work.