BMP to GIF Converter: Free, Private, No Upload

Convert BMP files to GIF in your browser. Smaller output file, batch up to 20 files at once, no upload, no account, no watermark. Your files never leave your device.

BMP to GIF
Batch up to 20 files
No upload, no account
Metadata stripped

1Add up to 20 images
2Pick from 18 formats
3Download or copy the code

Processed on your device. Your images are never uploaded, and metadata is stripped. How we keep it private

How do I convert BMP to GIF for free?

Drop your BMP files into the tool above, choose GIF as output, and download the result. Everything runs in your browser, so nothing is uploaded and there is no limit or watermark. It works on Windows, Mac, Linux, ChromeOS, iOS and Android — anywhere you have a modern browser.

Price: Free, no credits and no daily cap
Account required: No
File uploaded to server: No, processed locally in your browser
Batch limit: Up to 20 files at once
Input format: BMP
Output format: GIF
Best for: GIF workflows, smaller files, faster sharing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Adjustable 1-100, defaults to 90

How to convert BMP to GIF

1
Drop your BMP files
Drag up to 20 BMP files onto the page or click to choose them. Everything runs in your browser.
2
GIF is preselected
Output is already set to GIF. Adjust quality, resize or batch if you want.
3
Download
Save each GIF, or download all of them together as a ZIP.

BMP to GIF: what changes and when it makes sense

BMP is a Bitmap image format. It is best known for a simple structure that legacy programs and embedded systems can read without a decoder library. The main drawbacks are enormous files and no reliable transparency.

GIF is a Graphics Interchange Format. It is best known for simple animation that plays everywhere without a video player. The main drawbacks are a 256-colour limit and on-or-off transparency, which cause banding in photos and jagged edges.

BMP vs GIF at a glance

Property	BMP	GIF
Type	Raster image	Raster image
Compression	Usually uncompressed (run-length encoding exists but is rare)	Lossless LZW compression, after reducing each frame to a 256-colour palette
Transparency	None	On or off only, no soft edges
Animation	No	Yes
Colour depth	1 to 32 bits per pixel	8-bit indexed colour, 256 colours at most
Support	Opens in browsers and most desktop software, but almost never used on the web	Plays and displays everywhere, including email clients and chat apps
History	Created by Microsoft for Windows 1.0 in 1985 as the native bitmap format for the Windows Graphics Device Interface. The "BM" signature has been unchanged since then. Still used in embedded systems and legacy Windows software.	Developed by CompuServe in 1987 (GIF87a) and updated to GIF89a in 1989, adding animation and transparency. The LZW compression patent held by Unisys caused a crisis in the 1990s and motivated the creation of PNG. GIF usage is still massive despite being technically obsolete.

What actually changes in this conversion

GIF output is reduced to a 256-colour palette per frame. Photographs and gradients will show banding and dithering.
BMP has no alpha channel, so every pixel is already opaque.
Expect the GIF file to be far smaller than the BMP source.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About BMP: history and technical details

Created by Microsoft for Windows 1.0 in 1985 as the native bitmap format for the Windows Graphics Device Interface. The "BM" signature has been unchanged since then. Still used in embedded systems and legacy Windows software.

Technical: File header 14 bytes (signature, size, reserved, offset) followed by DIB header (40+ bytes). Supports 1, 4, 8, 16, 24, 32-bit pixels. Rows padded to 4-byte boundaries. Pixels can be stored bottom-up or top-down. Optional RLE4/RLE8 rarely used.

Real-world size: A 12-megapixel photo is 36 MB as 24-bit BMP. As JPG it is 2-4 MB (90% smaller). A 1920x1080 screen at 32-bit BMP is 8.3 MB; as PNG 200-600 KB.

Popular tools: Windows Paint, IrfanView, XnView, ImageMagick, GIMP, Adobe Photoshop, embedded dev tools.

Alternatives: PNG (lossless, 5-20x smaller), TGA (game pipelines), TIFF (professional print), JPG (lossy, much smaller).

About GIF: what you get

Developed by CompuServe in 1987 (GIF87a) and updated to GIF89a in 1989, adding animation and transparency. The LZW compression patent held by Unisys caused a crisis in the 1990s and motivated the creation of PNG. GIF usage is still massive despite being technically obsolete.

Technical: Up to 256 colours per frame from a palette. LZW compression on the indexed pixel data. Supports transparency (one palette index is transparent). Animation via multiple frames with per-frame delays. No true 24-bit colour.

Real-world size: A 500-frame animated GIF at 800x600 is 15-30 MB. The same animation as MP4 is 1-3 MB (90% smaller). A single 800x600 GIF frame is 100-500 KB; as PNG it is 200-600 KB but with better colour.

Popular tools: Photoshop, GIMP, ScreenToGif, Gifski, ImageMagick, FFmpeg, Ezgif.

Alternatives: MP4 (90% smaller for animation), WebP (animation with 16M colours), APNG (rarely used), PNG (for static frames).

Browser and software compatibility

BMP: Opens in browsers and most desktop software, but almost never used on the web. GIF: Plays and displays everywhere, including email clients and chat apps.

GIF output opens in virtually every browser, operating system and chat app.

Why people move away from BMP

A 12 megapixel photo saved as 24-bit BMP is roughly 36 MB because pixels are stored almost raw.
BMP has no practical support for transparency, and almost no web workflow expects it.

Why people choose GIF

GIF displays in every email client, chat app and forum without extra support.
It works well for very simple graphics with flat colours, such as small icons and diagrams.

Common mistakes with BMP

Using BMP on web pages — files are 10-20x larger than PNG with zero benefit
Expecting BMP transparency to work — most viewers ignore the alpha channel
Converting large BMPs without checking disk space — can fill your drive

Best practices for keeping quality

BMP is raw pixels, so the source has no compression damage. Convert at full size and choose the output quality freely.
Use GIF for flat graphics only. Photographs will show banding and dithering because of the 256-colour limit.
Edges of transparent areas are not anti-aliased, so check logos against both dark and light backgrounds.
Resize before converting if the image will be shown small. A 4000 pixel photo displayed at 800 pixels wastes bytes in any format.
Check the result at 100 percent zoom, especially around text, edges and gradients, before you replace any originals.
Keep your original files. Conversions to a lossy format cannot be undone.
When you convert a set of images, use the same quality setting for the whole batch. The converter handles up to 20 files at once.

BMP to GIF questions

Quick answers about privacy, quality, supported formats, file limits and how GIF works.

Why convert BMP to GIF?

GIF files are typically smaller than BMP, which makes them faster to share, send and load. The trade-off is a small amount of image detail at low quality settings.

Will converting BMP to GIF lose quality?

At 90% quality, most people cannot tell the difference. Use 85-95% for photos and you are fine.

Does GIF keep transparency?

Partly. GIF supports only on-or-off transparency, so soft edges and shadows lose their smoothness.

Are my files uploaded?

Never. Everything runs in your browser. Your files never leave your device. Open DevTools Network tab while processing — you will see no upload request.

Can I convert many files at once?

Yes, up to 20 files at once. Download them individually or all together as a ZIP.

Does the converter strip metadata?

Yes. Browsers do not pass EXIF data through a canvas, so GPS, camera model and dates are removed on every conversion. That is good for privacy.

Is it free?

Yes. No credits, no daily cap, no account, no watermark. The practical limit is your device memory.

Is GIF lossy or lossless?

Technically lossless (LZW), but the 256-colour palette makes it effectively lossy for photographs. Real-world photos lose most of their colour depth when saved as GIF.

Why do GIFs look pixelated?

Because GIF is limited to 256 colours per frame. Smooth gradients in photos become stepped bands. For photographic animation, use MP4 or WebP animation instead.

Your files never leave your device

No upload, no account, no tracking. Everything happens in your browser using the Canvas API and WebAssembly. You can confirm this in your browser's DevTools Network tab while the tool runs — no request carries your file. See why ToolDeck is different.