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Convert an image to BMP

Write an uncompressed 24-bit bitmap, the format old software still expects.

10 / 10 free files today

Related tools

All Editing & resizing tools →
Add a border to an imageFrame a picture with a solid border of the width and colour you pick.Add Line to ImageDraw freehand lines on an image — pick color, width and style, undo, and download — all in your browser.Add margins to an imagePad a picture with empty space so it fits a frame or a post.Add Text to ImageOverlay text on an image with your choice of font, size and color, drag it into place and download.Blur an imageSoften a whole picture by a chosen radius — useful for backgrounds.Convert an image to black and whiteTurn a photo to greyscale, fully or part of the way.Image CensorCover a region of an image with a solid colour or its average — irreversible, private, in your browser.Image CompressorShrink an image by re-encoding to JPEG or WebP at a chosen quality (with optional resize) and see the size saved.

Open Convert an image to BMP and you get an answer straight away, with no account to create. Its place is under Editing & resizing; Add a border to an image and Add Line to Image answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Convert an image to BMP do?

Write an uncompressed 24-bit bitmap, the format old software still expects.

When would I actually use this?

Preparing an image for somewhere specific: cropping to an aspect ratio, resizing under an upload limit, straightening a photo, or shrinking a file that is too heavy.

What is the most common mistake?

Enlarging a small image and expecting detail. Upscaling invents pixels from the ones already there; it can smooth an image but it cannot add information that was never captured.

How is Convert an image to BMP different from Add a border to an image?

They sit next to each other but answer different questions: Add a border to an image is the one to open when you need it to frame a picture with a solid border of the width and colour you pick. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Add Line to Image is the closest one after this: Draw freehand lines on an image — pick color, width and style, undo, and download — all in your browser.

What else is worth having open alongside it?

Add margins to an image and Add Text to Image — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Editing goes through the browser's canvas, and the output carries no watermark. Re-saving a JPEG re-compresses it, so work from the original rather than from an already-edited copy.

Further reading

All guides →
GuideHiding a Face, a Plate or an IBAN in an Image — PermanentlyBlur and pixelation are reversible — not by undoing the maths, but by guessing forwards. Against this tool's own blur and pixelate modes, a recovery attack returned the hidden value at rank 1 of 10,000. Both modes have since been removed. Here is what is left, and why it cannot be attacked the same way.ExplainerWatermarking: What It Protects, and What It Does NotA visible mark lives in the pixels, so it survives every copy — and degrades the image for every honest viewer at the same time. Measured: what a corner mark costs, what a tiled mark costs, and how each compares to metadata credit, Content Credentials and invisible watermarking.How-toHow to Compress an Image Without Losing QualitySmaller images load faster and rank better. Here's how to shrink an image the smart way — format, resolution and compression level — without visible loss.ExplainerStripping Photo Metadata: What Actually Comes OffA JPEG can carry six separate metadata blocks, not one. We built a file holding all of them — coordinates, camera serial, a hidden thumbnail, XMP, IPTC, a comment — pushed it through the cleaner, and read the output byte by byte to see what survived.GuideFavicons: What Sizes You Actually Need in 2026Five files cover every consumer that exists: the tab, the bookmark, the pinned tile, the Android home screen and the iOS home screen. The twenty-file lists are a dead browser matrix — with measurements showing what a 16-pixel icon can and cannot hold.ComparisonWebP vs JPG vs PNG: Which Image Format Should You Use?JPG, PNG and WebP each win in different cases. Here is when to use each for the best balance of quality, file size and compatibility.