OTB to TGA Converter

Browser-based OTB to TGA converter for image migration

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Modern Format Output

TGA provides lossless format popular in game development and video editing — a significant upgrade over the legacy OTB format for everyday image use and sharing.

Reliable Conversion

Convertio handles the OTB to TGA transformation accurately, preserving your image content while delivering a widely compatible output.

Browser-Based Tool

No software to download — convert OTB to TGA entirely in your web browser. Works on any device with an internet connection.

How to convert OTB to TGA

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose tga or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your tga file right afterwards

About formats

OTB (Over-the-Air Bitmap) is a monochrome image format developed by Nokia as part of their Smart Messaging specification in 1997, designed for transmitting small graphics — operator logos, group graphics, and picture messages — to Nokia mobile phones via SMS. OTB files contain 1-bit (black and white) images at small fixed resolutions, typically 72x14 pixels for operator logos and 72x28 pixels for group graphics, encoded in a compact binary format suitable for embedding within the payload of SMS text messages. The format uses a simple structure: a header byte indicating whether the image is an operator logo or group graphic, width and height values, and the raw bitmap data where each bit represents one pixel packed eight per byte. The extremely tight format — designed to fit within a single SMS message (140 bytes maximum payload, shared with addressing overhead) — reflects the severe constraints of mobile communication in the late 1990s. Nokia's Smart Messaging system was one of the first commercial implementations of rich content delivery to mobile phones, and OTB images represented the entire visual content capability of Nokia handsets before MMS and mobile data browsing arrived. One advantage is the format's historical role as a pioneer of mobile visual messaging: OTB images were among the first graphics that ordinary consumers could send to each other's phones, predating MMS, camera phones, and smartphones by nearly a decade. The format's minimal footprint is another characteristic — entire images fit in a few dozen bytes, reflecting an era of extreme bandwidth constraints. OTB files are supported by ImageMagick, various Nokia phone management tools, and specialty mobile format utilities.
Developer: Nokia
Initial release: 1997
TGA (Truevision Graphics Adapter, also known as TARGA) is a raster image format created by Truevision in 1984 for their line of display adapter cards designed for IBM PC compatibles. The format stores pixel data in a straightforward structure: an 18-byte header specifying dimensions, color depth, and image descriptor flags, optional color map data, and the pixel array in either uncompressed or RLE-compressed form. TGA supports indexed color (8-bit with palette), true color (15-bit, 16-bit, 24-bit), and true color with alpha channel (32-bit), and was one of the first PC image formats to include per-pixel alpha transparency. The format became a staple of the professional graphics industry, widely adopted by video editing suites, 3D rendering software, and game development pipelines throughout the 1990s and 2000s. One advantage is native alpha channel support — TGA was one of the earliest formats offering full 8-bit alpha transparency per pixel, making it the standard output format for 3D renderers and compositing software where layered transparency is essential. The simple, well-documented structure is another strength: TGA files are quick to parse and write, with no complex metadata or container overhead, valued in real-time applications and game engines where loading speed matters. While PNG has largely replaced TGA for general use, the format persists in game development, texture pipelines, and 3D rendering workflows where its simplicity and alpha support remain advantageous.
Developer: Truevision
Initial release: 1984

Frequently Asked Questions

Why would I convert OTB to TGA?

OTB is an Over-The-Air bitmap format for early Nokia phones with limited modern support. Converting to TGA (lossless format popular in game development and video editing) makes your images accessible on any modern platform.

Which software can view TGA files?

TGA files can be opened with Photoshop, GIMP, IrfanView, game development tools. Most of these are available across Windows, macOS, and Linux.

Are my uploaded files kept private?

Your privacy is protected. All uploaded files are erased after conversion and output files are purged within 24 hours — nothing is stored long-term.

Can I convert multiple OTB files to TGA at once?

Yes — upload several OTB files in one session and Convertio processes them all into TGA simultaneously, saving you time.

How long does OTB to TGA conversion take?

Usually just seconds. OTB files are typically small, so the upload, conversion, and download process finishes very quickly on Convertio.

Does this converter work on mobile devices?

Yes — Convertio runs entirely in the browser. You can convert OTB to TGA on phones, tablets, or desktops without installing anything.

OTB to TGA Quality Rating

3.0 (1 votes)
You need to convert and download at least 1 file to provide feedback!