JPG to BMP Converter

Convert JPG to BMP Online — Free, Fast & Secure

Turn any JPG (or PNG/WebP) into a clean BMP file right in your browser — free, with no software to install and no signup. This online JPG to BMP converter lets you pick the exact bit depth you need — 24-bit true colour, 16-bit, 8-bit (256 colours) or 1-bit monochrome — or use a ready-made preset for retro hardware and game modding, then download instantly. Your files are processed securely and are never stored.

Need something else? Try our all-in-one Image Converter, convert a PNG to BMP, or compress an image to an exact KB size (handy when a device needs a JPG to BMP under 50 KB).

How to Convert JPG to BMP

Changing a JPG to BMP takes three quick steps — no account and nothing to download:

• 1. Upload your image. Drop in a JPG, PNG or WebP file.
• 2. Pick your settings. Choose a bit depth (24-bit, 16-bit, 8-bit or 1-bit) and size, or select a hardware preset to auto-configure everything.
• 3. Convert & download. Click Convert & Download and your BMP is ready instantly.

JPG vs BMP: What's the Difference?

JPG (JPEG) is a compressed format — small file size, but it throws away detail and can add blocky artefacts. BMP (bitmap) is uncompressed: every pixel is stored exactly, so it's lossless and universally readable, which is why so many devices, games and printers demand it. Converting JPG to BMP gives you that raw, predictable pixel data — at the cost of a larger file. If you need the reverse or a smaller output, the bit-depth options below let you control the final size.

Choose the Right BMP Bit Depth

• 24-bit (True Color, RGB888) — full colour, the safest default for photos and general use.
• 16-bit (High Color, RGB565) — smaller files for embedded screens and boot logos.
• 8-bit indexed (256 colours) — required by classic game engines and many sprite tools.
• 1-bit monochrome — pure black & white for thermal printers and laser engravers.

JPG to BMP Presets for Retro Hardware & Game Modding

Converting a JPG to a BMP that "just works" in specific hardware or retro software is tricky. Generic converters output 24-bit BMPs by default, which often fail or crash devices that require a precise format. Our converter uses robust backend processing (Imagick) to generate true Device-Independent BMPs, with presets for the most common use cases.

What format does Anbernic / Trimui need for boot logos?

Devices running Knulli, Batocera or MinUI (like the Anbernic RG35XX series, Trimui Smart Pro, R36S) read the boot logo directly from the framebuffer. It needs an exact resolution match to your display (e.g. 640×480 for RG35XX Plus/H/SP) and MUST be named bootlogo.bmp. The format is typically uncompressed 16-bit or 24-bit BMP. Use the "Anbernic / Trimui" preset to force the correct filename and format instantly.

Rockbox album art not showing? This BMP preset fixes it.

On Rockbox (iPod Classic, Sansa Clip), album art embedded as progressive JPEGs crashes the decoder or won't display, and Rockbox does not support RLE-compressed BMP files. The "Rockbox Portable Player" preset outputs a pure, uncompressed BI_RGB 24-bit BMP named cover.bmp that works flawlessly on all Rockbox targets.

Half-Life / GoldSrc WAD texture BMP requirements

Modding GoldSrc (Half-Life 1, Counter-Strike 1.6)? WAD textures and StudioMDL model textures strictly require an 8-bit indexed BMP (256-colour palette) — 24-bit causes compiler rejection or visual corruption, and dimensions must be multiples of 16 (e.g. 256×256, 128×64). The GoldSrc preset snaps dimensions to the nearest multiple of 16 and applies Floyd–Steinberg dithering to fit 256 colours perfectly.

RPG Maker 2000 / 2003 — why only 8-bit BMP?

Legacy RPG Maker 2000/2003 (and the EasyRPG runtime) don't support PNG or 24-bit BMPs. Tilesets, CharSets and FaceSets must be exactly 8-bit indexed uncompressed BMPs. The preset enforces this and applies high-quality dithering so your sprites keep their look.

Thermal printer & laser engraver BMP format

ESC/POS thermal printers and many basic CNC/laser engravers require 1-bit monochrome images. The 1-bit preset converts your image to black and white using algorithms like Floyd–Steinberg to simulate grayscale shading with pure black dots.

Convert JPG to BMP on Windows, Mac & Linux

Because everything runs in your browser, this JPG to BMP converter works the same on Windows, macOS, Linux, ChromeOS, Android and iPhone — there's no app to install and no command line. Whether you're on a desktop or converting JPG to BMP on your phone, the result is identical.

Frequently Asked Questions