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Category Image Converters

Drop your .abgr / raw file here or click to browse Raw ABGR pixel data (4 bytes per pixel)

Width (px) 1 – 8192 pixels

Height (px) 1 – 8192 pixels

JPEG Quality: 85% 1% (smallest) – 100% (best)

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About

Raw ABGR pixel data stores each pixel as four bytes in the order Alpha, Blue, Green, Red. This format appears in GPU framebuffer dumps, game engine texture exports, and graphics debugging tools. Without a proper converter, feeding ABGR data into standard image viewers produces corrupted color channels. A blue sky renders orange. Skin tones shift to cyan. The file contains no header, no dimensions, no compression metadata. You must know the exact width and height or the reconstruction fails with diagonal shearing artifacts. This tool performs real byte-level channel reordering from ABGR to RGBA, renders the result onto a Canvas element, and encodes it as a JPEG using the browser's native encoder. The conversion is lossless at the channel-swap stage. Quality loss occurs only during JPEG compression, controlled by the Q parameter (0.0 to 1.0).

A common mistake is confusing ABGR with ARGB or BGRA. In ABGR, byte offset 0 is alpha, offset 1 is blue, offset 2 is green, offset 3 is red. Getting this wrong produces an image with swapped red and blue channels. The tool validates that your file size equals W × H × 4 bytes before processing, catching dimension mismatches before they produce garbage output.

Formulas

The ABGR to RGBA channel remapping operates on each 4-byte pixel block. Given a source buffer S in ABGR order and a destination buffer D in RGBA order, the mapping for pixel index i is:

D[4i + 0] = S[4i + 3] (R ← byte 3)
D[4i + 1] = S[4i + 2] (G ← byte 2)
D[4i + 2] = S[4i + 1] (B ← byte 1)
D[4i + 3] = S[4i + 0] (A ← byte 0)

The expected file size validation formula ensures dimensional correctness before processing:

FileSize_expected = W × H × 4 bytes

Where W is the image width in pixels, H is the image height in pixels, and the factor 4 represents the bytes per pixel (ABGR). JPEG quality Q is a value in the range [0.0, 1.0] passed to the Canvas toBlob encoder. At Q = 1.0, compression artifacts are minimal. At Q = 0.1, file size drops substantially but visible blocking artifacts appear in gradient regions.

Reference Data

Pixel Format	Byte Order	Byte 0	Byte 1	Byte 2	Byte 3	Common Source
ABGR	A, B, G, R	A	B	G	R	GPU framebuffers, OpenGL readbacks
RGBA	R, G, B, A	R	G	B	A	Canvas API, PNG standard
ARGB	A, R, G, B	A	R	G	B	macOS Quartz, Windows GDI+
BGRA	B, G, R, A	B	G	R	A	Windows BMP, Direct2D
RGB	R, G, B	R	G	B	-	JPEG (internal), PPM format
BGR	B, G, R	B	G	R	-	OpenCV default, BMP 24-bit
Grayscale	Y	Y	-	-	-	Medical imaging, depth maps
YUV 4:2:0	Y, U, V (planar)	Y	U	V	-	Video codecs (H.264, VP9)
NV12	Y plane + UV interleaved	Y	U	V	-	Android camera, hardware decoders
RGB565	5R, 6G, 5B (16-bit)	R₅G₆		G₆B₅		Embedded displays, legacy mobile
RGBA16F	R, G, B, A (half-float)	R_16f	G_16f	B_16f	A_16f	HDR rendering, EXR format
RGBA32F	R, G, B, A (float)	R_32f	G_32f	B_32f	A_32f	Scientific imaging, compute shaders
CMYK	C, M, Y, K	C	M	Y	K	Print prepress, TIFF/PSD
Indexed (P8)	Palette index	idx	-	-	-	GIF, retro game sprites

Frequently Asked Questions

Raw pixel data contains no header with dimension metadata. You must know the dimensions from the source application. As a verification method, divide the file size by 4 (bytes per pixel) to get the total pixel count. Then factor that number into plausible width and height pairs. For example, a 7,372,800-byte file contains 1,843,200 pixels, which factors to 1920 × 960 or 1280 × 1440. If the dimensions are wrong, the image appears diagonally sheared or completely scrambled.

JPEG does not support transparency. The alpha channel from the ABGR data is discarded during JPEG encoding. Pixels with partial transparency will be composited against a white background before encoding. If your source data has meaningful alpha information (cutouts, masks), consider using PNG output instead. Fully transparent pixels (A = 0) will appear as white in the resulting JPEG.

The letters indicate byte order in memory. ABGR stores Alpha at byte offset 0, Blue at 1, Green at 2, Red at 3. ARGB stores Alpha at 0, Red at 1, Green at 2, Blue at 3. BGRA stores Blue at 0, Green at 1, Red at 2, Alpha at 3. Confusing these formats results in swapped Red and Blue channels, making the image appear with inverted warm and cool tones.

For photographic content, a quality of 0.85 to 0.92 provides an optimal balance between file size and visual fidelity. Below 0.7, blocking artifacts become visible in smooth gradients and skin tones. At 1.0, the file size can be 5 - 10× larger than at 0.85 with negligible perceptual improvement. For graphics with sharp edges and text, use 0.95 or higher to avoid ringing artifacts around high-contrast boundaries.

Browser Canvas elements have implementation-dependent size limits. Most modern browsers support up to 8192 × 8192 pixels, some up to 16384 × 16384. The raw ABGR file for an 8192 × 8192 image is 268 MB. The tool clamps dimensions to 8192 and validates file size before loading into memory. Very large files may cause the browser tab to run out of memory on devices with limited RAM.

This is the classic symptom of incorrect width or height values. When the width is wrong, each row of pixels starts at the wrong byte offset, causing the image data to shear diagonally. If the total pixel count (W × H) does not match FileSize ÷ 4, the tool will warn you. Try common resolutions: 640×480, 1280×720, 1920×1080, or calculate factors of the pixel count.