Convert RGBA Values to PNG
Rebuild a PNG from a flat list of RGBA pixel values. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Convert RGBA Values to PNG
- 1. Paste your RGBA values. Paste the flat list of pixel values, four numbers per pixel for red, green, blue and alpha, such as 8 numbers describing a two-pixel image.
- 2. Set the image dimensions. Enter Width (px) to tell the tool how many pixels each row contains, and set Height (px, 0 = auto) to a specific value or leave it at 0 to calculate it automatically.
- 3. Download the PNG. Save the resulting image.png file, rebuilt pixel by pixel from your numbers at the dimensions you specified, such as a 2 by 1 pixel result.
When to use Convert RGBA Values to PNG
Convert RGBA Values to PNG rebuilds a PNG from a flat list of RGBA pixel values, restoring both color and transparency information that a plain RGB list would leave out. Convert RGBA Values to PNG is for visualizing pixel data that already includes an alpha channel.
- Visualizing a transparency mask from raw data. A developer debugging an alpha compositing bug rebuilds a small test image from logged RGBA values to see exactly how the transparency channel renders.
- Reconstructing an image with transparency from a script. Someone whose image generation script outputs RGBA arrays including alpha rebuilds the result as a real PNG to confirm transparent regions look correct.
- Testing a pixel format with known dimensions. A developer writing unit tests for an image decoder builds small known-dimension PNGs from hand-crafted RGBA values to check the decoder handles them correctly.
Examples
Rebuild from RGBA values
Input
8 numbers (4 per pixel) + width 2
Output
image.png (2×1 px)
About the Convert RGBA Values to PNG tool
Convert RGBA Values to PNG runs as plain JavaScript in your browser tab, with no server behind it. Rebuild a PNG from a flat list of RGBA pixel values. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's PNG Tools section, 108 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Width (px) and Height (px, 0 = auto), and the result refreshes the moment you change one. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Convert RGBA Values to PNG cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.