raster format

What is a .MONO file?

MONO (Raw Monochrome Bits) is a raster image format developed by Various around 1980s. It's a specialised format — converting to a mainstream format like JPG or PNG makes it easy to open and share anywhere.

Full name
Raw Monochrome Bits
Developed by
Various
Released
1980s
Extension
.mono
MIME type
image/mono
Transparency
Varies

How to open a MONO file

MONO files open in specialised software and some professional tools; for everyday use, convert MONO to JPG or PNG.

What MONO files are used for

Photos & web images

Share, post and embed pictures across sites and apps.

Editing & design

Work with the format in editors like Photoshop and GIMP.

Storage & archiving

Keep memories and assets in a widely-readable form.

Strengths & limitations

✔ Strengths✖ Limitations
Open / royalty-freeNo transparency support
Excellent compatibility

Need more than a conversion?

Remove the background from MONO images, upscale to 4K, or generate new visuals with SharkFoto AI.

Frequently asked questions

MONO (Raw Monochrome Bits) is a raster image format developed by Various around 1980s. It's a specialised format — converting to a mainstream format like JPG or PNG makes it easy to open and share anywhere.

MONO files open in specialised software and some professional tools; for everyday use, convert MONO to JPG or PNG.

MONO is optimised for its specific use rather than strictly lossless storage.

Use SharkFoto's free tools — upload your MONO file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.

No — MONO doesn't store transparency; convert to PNG or WEBP if you need it.