Free online FITS-to-APNG converter — upload a FITS file and download a APNG. Fast, private, no signup.
Drag and drop your FITS into the converter above, or click to choose it. Large files upload straight to storage with a progress bar — and we detect the real format from the file's bytes, so even a mislabeled file works.
APNG is already selected as the target. Any options that apply to a APNG — quality, resize, rotate and more — appear automatically; tweak them or leave the defaults, then start the conversion.
Your APNG is ready in seconds. Download it, inspect or strip its metadata, or share it with a private link — your choice.
Drop your FITS file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a APNG to download. No software to install.
Yes. Convert FITS to APNG for free right in your browser, with no account needed to get started.
Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.
FITS — the Flexible Image Transport System used in astronomy; convert-from only. Animated PNG — lossless animation with full alpha (a PNG extension).
Convert FITS to: JPG · PNG · WEBP · GIF · HEIC · AVIF · TIFF · BMP · DDS · EPS
Convert to APNG from: AVIF · BMP · CUR · DDS · DPX · EPS · EXR · GIF · HDR · HEIC