OTB (Over-the-Air Bitmap) is Nokia's monochrome image format for early mobile phone logos and graphics sent over the air.
OTB opens in legacy mobile tools and some converters; convert to PNG to view on modern devices.
Share, post and embed pictures across sites and apps.
Work with the format in editors like Photoshop and GIMP.
Keep memories and assets in a widely-readable form.
| ✔ Strengths | ✖ Limitations |
|---|---|
| Purpose-built for its niche | No transparency support |
| Limited support — may need converting |
Remove the background from OTB images, upscale to 4K, or generate new visuals with SharkFoto AI.
OTB (Over-the-Air Bitmap) is Nokia's monochrome image format for early mobile phone logos and graphics sent over the air.
OTB opens in legacy mobile tools and some converters; convert to PNG to view on modern devices.
OTB is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your OTB file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — OTB doesn't store transparency; convert to PNG or WEBP if you need it.