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JPG to BMP

Convert a JPG image to BMP. Files never leave your browser.

About JPG to BMP · বিস্তারিত

JPG to BMP decodes a JPG photo and stores its pixels in an uncompressed 24-bit BMP file, inside your browser. The bitmap is much larger than the JPG but can be read by very simple software and hardware.

A JPG is a compact, compressed description of a photo; reading it needs a decoder. A BMP is the opposite: plain rows of colour values that a few lines of code can read. Converting a JPG to BMP unpacks the photo once, so the receiving program does not have to.

The picture itself does not change. Any softness or blockiness from the JPG compression is copied into the bitmap as it is, and the BMP simply holds those pixels in raw form.

How to use it · কীভাবে ব্যবহার করবেন

  1. Choose the photo

    Select a .jpg or .jpeg file with the upload button.

  2. Convert

    Press Run JPG to BMP; the browser decodes the JPG and writes the bitmap rows.

  3. Download

    Save the .bmp file, keeping in mind it will be several times larger than the JPG.

When it helps · কখন কাজে লাগে

Image-processing homework
Students writing their own filters or edge detectors often need input as BMP so their program can read pixels without a JPG library.
Old desktop programs
Some older Windows applications and machine-control software accept only bitmaps for logos and background pictures.
LED and LCD display projects
Display controllers and hobby boards frequently load 24-bit BMP images; a photo from a phone has to be unpacked first.

Example: an 800 × 600 photo

An 800 × 600 JPG of 80 to 150 KB becomes a BMP of exactly 1,440,054 bytes (800 × 3 × 600 plus the 54-byte header), about 1.4 MB, whatever the photo shows.

What you get

  • Writes a standard uncompressed 24-bit BMP
  • Same width and height as the JPG
  • Pixel rows padded to 4-byte boundaries as the format requires
  • Runs offline in your browser after the page loads
  • Accepts .jpg and .jpeg

বাংলায়: JPG থেকে BMP

JPG ছবি কমপ্রেস করা থাকে, আর BMP-তে প্রতিটি পিক্সেল সরাসরি লেখা থাকে। কিছু পুরনো সফটওয়্যার, এলইডি ডিসপ্লে প্রজেক্ট বা বিশ্ববিদ্যালয়ের ইমেজ প্রসেসিং অ্যাসাইনমেন্টে BMP লাগে। এই টুল ব্রাউজারেই JPG থেকে ২৪-বিট BMP বানায়, ছবির মাপ একই থাকে, তবে ফাইল অনেক বড় হয়।

BMP করলে কি ছবির মান বাড়বে?

না, ছবি হুবহু একই থাকবে, শুধু ফাইল বড় হবে।

১২ মেগাপিক্সেলের ছবি BMP হলে কত বড় হয়?

প্রায় ৩৬ MB, কারণ প্রতিটি পিক্সেলে ৩ বাইট লাগে।

Questions people ask · প্রশ্ন ও উত্তর

Will a BMP look better than my JPG?

No, it will look identical. BMP stores what the JPG decoder produced, including any compression marks; it just stops new loss from happening.

How big will the BMP be?

Roughly width × height × 3 bytes plus a 54-byte header. A 12-megapixel phone photo becomes about 36 MB.

Which programs need BMP files?

Mostly older Windows software, some industrial and hobby electronics tools, and teaching code that reads pixels directly. Modern apps and websites prefer JPG, PNG or WEBP.

Is the photo sent to a server?

No. Decoding and BMP writing both happen in your browser tab, so the photo stays on your phone or computer.

Can I convert the BMP back to JPG later?

Yes, with BMP to JPG. Each JPG save is lossy, so for repeated round trips keep your original JPG instead.

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