TGA to BMP Converter
Convert TGA to BMP in your browser. TGA files usually come from game engines, 3D renderers and texture painting tools; BMP is the better fit for legacy software and embedded systems that require it. You get an uncompressed 24-bit BMP, or 32-bit with alpha when the image has transparency. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
TGA expected · other image formats also work
How to use TGA to BMP
- 1
Add your TGA files: drop them here, choose them, or paste from the clipboard.
- 2
There is nothing to tune: the BMP is written uncompressed. Resizing and rotating are under More options if you need them.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .bmp files one at a time or together as a ZIP.
Why use Aback Images for tga to bmp
Where the BMP goes next
BMP opens in every operating system and browser.
BMP next to TGA
Neither format compresses much, so the BMP lands close to the TGA in size.
Written without a lossy pass
The BMP is written uncompressed, so the pixels decoded from the TGA arrive unchanged.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
TGA vs BMP
What changes from TGA to BMP
Encoding: the TGA uses uncompressed or run-length encoded (RLE); BMP uses usually none; RLE for some 4 and 8-bit files, and the download is an uncompressed 24-bit BMP, or 32-bit with alpha when the image has transparency.
Bit depth: 8, 15, 16, 24 or 32 bits per pixel in the TGA; BMP allows 1, 4, 8, 16, 24 or 32 bits per pixel, and the BMP written here has 24 or 32 bits per pixel.
Colour: RGB, greyscale or a colour map in the TGA; BMP supports RGB or an indexed palette, written here as 8-bit sRGB.
Transparency: the TGA stores it as the fourth byte of each 32-bit pixel (or one bit in 16-bit files); the BMP keeps it as an optional fourth byte in 32-bit files, which many programs ignore.
Metadata: the TGA can carry an image ID field and an optional extension area with author and date; BMP can carry nothing beyond the header's resolution fields (and a colour profile in rare V5 headers), but nothing is copied across.
About TGA
TGA is a simple raster format still widely used for game textures and 3D rendering pipelines because it stores alpha channels reliably and loads fast.
A TGA has an 18-byte header (ID length, colour map type, image type 2 for true colour or 10 for RLE, origin, size, bits per pixel and a descriptor byte whose bits give the alpha depth and whether rows run top-down), then the pixels; version 2 files end with a 'TRUEVISION-XFILE' footer.
TGA files usually come from game engines, 3D renderers and texture painting tools.
About BMP
BMP stores raw, uncompressed pixels. Files are huge but trivially simple, which is why some legacy Windows software, embedded displays and printers still ask for it.
A BMP is a 14-byte file header ('BM' and the offset to the pixels), a DIB header (40 bytes, or 108 and 124 bytes in the V4 and V5 versions that add colour masks and alpha), an optional palette, then pixel rows padded to 4 bytes and normally stored bottom-up.
When converting TGA to BMP makes sense
BMP is the better choice for legacy software and embedded systems that require it, while TGA suits game textures and 3D software.
BMP strengths: No compression artifacts; Read by very old and very simple software. Drawbacks to weigh: Enormous files; Poor support for transparency; No metadata.
Limitations
- Some writers store rows bottom-up and some top-down; the descriptor byte says which, and the decoder follows it, so orientation is preserved.
- A BMP is uncompressed, about 3 bytes per pixel, or 4 with transparency, so expect a large file.
- Some older programs ignore the alpha channel of a 32-bit BMP and show transparent areas as black or white.
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Frequently asked questions
Does converting TGA to BMP lose quality?
BMP is written uncompressed, so the pixels are stored exactly as decoded.
Is transparency kept in the BMP?
Yes. TGA stores it as the fourth byte of each 32-bit pixel (or one bit in 16-bit files), and the BMP is written with an alpha channel, so transparent areas stay transparent.
Which apps open BMP files?
Every operating system and browser.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.