Pixmorph
FITS converter

Free FITS converter

Convert FITS images to another format in bulk without losing quality or installing any software. Fast, free and easy to use.

ConvertFITS
Drop your FITS images here

68+ input formats · 41 output formats · click, drop or paste

Choose files

How it works

  1. 01

    Upload your FITS file(s)

    Click "Choose files" or drag your FITS images into the drop area. You can also paste them.

  2. 02

    Pick the output

    Choose JPG, PNG, WEBP or another format. Open Settings to adjust quality or max size.

  3. 03

    Start conversion

    Hit Convert. Files process three at a time — most finish in well under a second.

  4. 04

    Download

    Download each file individually, or all of them together as a ZIP archive.

Convert FITS to…

Popular

FITS to JPGFITS to PNGFITS to WEBPFITS to AVIFFITS to GIFFITS to TIFFFITS to BMPFITS to ICOFITS to JXLFITS to JP2FITS to QOI

Design & pro

FITS to PSDFITS to PSBFITS to TGAFITS to DDSFITS to EXRFITS to HDRFITS to DPXFITS to SGIFITS to CUR

Documents

FITS to PDFFITS to EPSFITS to PS

Other

FITS to PCXFITS to PPMFITS to PGMFITS to PBMFITS to PNMFITS to PAMFITS to PFMFITS to XPMFITS to XBMFITS to WBMPFITS to RASFITS to MNGFITS to JNGFITS to MIFFFITS to VIFFFITS to PALMFITS to OTB

Frequently asked questions

How do I convert FITS to another format?+

Drop your FITS image(s) into the converter above, choose the output format, click Convert, then download the result individually or as a ZIP.

How do I convert FITS without losing quality?+

Open Settings and move the quality slider to 100. Lossless formats like PNG and TIFF always keep every pixel; WEBP and AVIF switch to lossless mode at 100.

Can I bulk convert FITS files?+

Yes. Select or drop as many FITS files as you like — they're converted in parallel and can be downloaded together as a ZIP.

Is this converter secure?+

Yes. Every file is converted entirely inside your browser and never uploaded to any server.

Can I edit images after converting?+

Yes — use our free Resize and Compress tools.

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