Convert FITS to GIF Online
Convert FITS images to GIF format free, fast, and privately in your browser.
Drag & drop files here, or browse
Up to 20 images at once
How to convert FITS to GIF
Upload your files
Drag & drop or browse up to 20 FITS files at once.
Browser converts locally
Files convert to GIF in your browser - nothing is uploaded anywhere.
Download results
Save files individually or download everything as a ZIP bundle.
Why use this converter
100% Private - Nothing Uploaded
Your FITS files never leave your device. All conversion happens locally inside your browser using WebAssembly. Zero server contact.
Batch + ZIP Download
Convert up to 20 FITS files to GIF at once and download them all as a single ZIP archive in one click.
Optimized Compression
GIF uses advanced compression to keep file sizes small while maintaining excellent visual quality.
Instant Conversion
Your FITS files convert to GIF in seconds using WebAssembly - no waiting, no queues.
Frequently asked questions
Upload your FITS files by dragging them into the drop zone or clicking Browse. Select up to 20 files at once, then click Convert. Your files are processed locally in your browser and ready to download in seconds - no account or internet connection needed after the page loads.