HEIC to BMP Converter: Free, Private, No Upload

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

HEIC to BMP
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 HEIC to BMP for free?

Drop your HEIC files into the tool above, choose BMP 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: HEIC
Output format: BMP
Best for: BMP workflows, lossless quality, editing, printing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Lossless, exact pixels

How to convert HEIC to BMP

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

HEIC to BMP: what changes and when it makes sense

HEIC is a High Efficiency Image Container (HEIF using HEVC compression). It is best known for photos at roughly half the size of JPG, with 10-bit colour and depth data on iPhones. The main drawbacks are patchy support across web tools, editors and upload forms because of HEVC licensing.

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.

HEIC vs BMP at a glance

Property	HEIC	BMP
Type	Container format	Raster image
Compression	Lossy HEVC compression, typically roughly half the size of JPG at similar quality	Usually uncompressed (run-length encoding exists but is rare)
Transparency	Full alpha channel with soft edges	None
Animation	No	No
Colour depth	8 to 16 bits per channel, with wide-gamut Display P3 colour on iPhones	1 to 32 bits per pixel
Support	Native on Apple devices and recent Windows and Android, but browsers other than Safari cannot display it	Opens in browsers and most desktop software, but almost never used on the web
History	HEIF was defined by MPEG in 2015. Apple adopted HEIC (HEIF with HEVC) as the default iPhone photo format in iOS 11 (2017). The move roughly halved storage usage compared to JPG.	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.

What actually changes in this conversion

Moving from a lossy format to a lossless one stops any further quality loss but cannot restore detail already discarded.
BMP cannot store transparency, so transparent areas are filled with white.
Expect the BMP file to be far larger than the HEIC source.
Browser-based conversion works in 8-bit sRGB. Wide-gamut, 10-bit and 16-bit data are reduced. For colour-critical work, keep the original.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About HEIC: history and technical details

HEIF was defined by MPEG in 2015. Apple adopted HEIC (HEIF with HEVC) as the default iPhone photo format in iOS 11 (2017). The move roughly halved storage usage compared to JPG.

Technical: HEIF container holds HEVC-encoded image data plus metadata, thumbnails, and auxiliary images. HEVC (H.265) compression is roughly 2x more efficient than JPG. iPhone HEIC files use 10-bit Display P3 colour space.

Real-world size: An iPhone HEIC file is typically 1.5-2.5 MB, compared to 3-5 MB for the same photo as JPG. Windows 10 requires the HEIF Image Extensions from Microsoft Store to open it. Windows 11 has built-in support.

Popular tools: iOS Camera, macOS Preview, Adobe Photoshop 2021+, Adobe Lightroom 2018+, Windows 11 Photos, ImageMagick.

Alternatives: JPG (universal), PNG (lossless), WebP (modern web), AVIF (future web).

About BMP: what you get

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).

Browser and software compatibility

HEIC: Native on Apple devices and recent Windows and Android, but browsers other than Safari cannot display it. BMP: Opens in browsers and most desktop software, but almost never used on the web.

BMP output opens in browsers and most desktop software, but very few web workflows expect it.

Why people move away from HEIC

Most websites, forms and older Windows or Android devices cannot open HEIC.
Browsers other than Safari cannot display HEIC, so it cannot be used on web pages.
Email and messaging apps sometimes convert HEIC unpredictably, or refuse it.

Why people choose BMP

Some legacy Windows software, embedded displays and industrial tools only read BMP.
With no compression there is no decoding step and no compression artefacts.

Common mistakes with HEIC

Trying to upload HEIC to forms that only accept JPG
Expecting Windows 10 to open HEIC without the extension
Losing location data — HEIC to JPG strips GPS

Best practices for keeping quality

iPhone HEIC files use the Display P3 colour space. A browser conversion maps colour to sRGB, which can slightly mute very saturated colours.
Live Photo motion and depth data are not carried over. You get the still image only.
Expect a very large file. Check the upload limit and free disk space before saving.
Flatten any transparency first. BMP does not reliably carry an alpha channel.
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.

HEIC to BMP questions

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

Why convert HEIC to BMP?

BMP is lossless. It keeps every pixel exactly. It is the safe choice when you plan to edit, print or need exact pixel data.

Will converting HEIC to BMP lose quality?

No. BMP is lossless, so nothing is thrown away.

Does BMP keep transparency?

No. BMP does not support transparency. Transparent areas will be filled with white.

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.

Why is BMP so large?

Because it stores raw pixel data with little or no compression. A 12-MP photo as 24-bit BMP is 36 MB, compared to 2-4 MB as JPG. The tradeoff is speed (no decoding needed) and lossless quality.

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.