Free Bulk FITS Image Converter Online — 25+ Formats
Drag and drop your files into this free online FITS converter (image/fits, .fits, Lossless), pick a target format from 25+ options and click the Convert button to change formats in HD quality. Use the quality slider to control file size and detail, then download each result separately or grab the whole batch as a single ZIP — no signup, no watermark, your FITS files deleted from our servers right after.
To:
85%
Drop images here or click to browse
PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
Most Popular Free FITS Conversions
All FITS Conversion Formats With 25+ Output Options
webp png jpg gif avif jxl jp2 bmp ico cur tiff tga pcx wbmp dds sgi pbm pgm ppm pnm pam xbm xpm ras pdf
25 free FITS conversion formats available with bulk and batch support
What Is FITS Format and Why Convert It Online?
Flexible Image Transport System for astronomical data.
| Property | FITS Details |
|---|---|
| File Extension | .fits |
| MIME Type | image/fits |
| Compression Type | Lossless |
| Transparency Support | No |
| Animation Support | No |
| Metadata Support | Yes |
| Available Output Formats | 25+ formats |
- Bulk and batch conversion that lets you upload and convert multiple FITS files at once to any of 25+ supported formats
- 100% free with no signup so you can start converting FITS files instantly without creating an account
- Private and secure because all uploaded files are auto-deleted from our servers immediately after conversion