Is this HEIC to BMP converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple HEIC files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

Will the image quality change after conversion?

It depends on the formats involved. Converting to a lossless format like PNG preserves every pixel exactly. Converting to a lossy format like JPEG or WebP applies compression — we default to 85% quality, which looks identical to the original for almost all images. You won't notice a difference unless you zoom in pixel-by-pixel.

Do you support batch image conversion?

Yes — drop multiple images at once and they all convert in parallel. Free accounts handle up to 5 at a time; Pro is unlimited. Download everything as a single ZIP when you're done.

Why would I need HEIC as a BMP?

BMP is required by certain legacy Windows applications, older scanner software, and some industrial or scientific imaging tools that pre-date modern format support. If an app demands BMP, this converter is the fastest route from iPhone photos.

Will the BMP file be much larger than the HEIC?

Yes — BMP stores every pixel uncompressed. A 12 MP HEIC at 2 MB typically becomes a 30–36 MB BMP. Only use BMP when the destination software specifically requires it.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

HEIC to BMP Converter — Free, Online, No Upload

How to convert HEIC to BMP online

1
Drop your HEIC file
Drag and drop your High Efficiency Image Container file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs High Efficiency Image Container → Bitmap Image File entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your BMP
Your Bitmap Image File file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

HEIC vs BMP: format overview

HEIC

High Efficiency Image Container

Apple (based on MPEG HEIF/ISO spec) · 2017

Compression: lossy
Color depth: 12-bit
Transparency: Yes

✓ 50% smaller than JPEG at equivalent quality
✓ Supports 16-bit depth and HDR
✗ Poor browser support

BMP

Bitmap Image File

Microsoft · 1987

Compression: none
Transparency: No

✓ No compression — original pixel data preserved
✓ Universal Windows support

HEIC magic bytes: 00 00 00 18 66 74 79 70 68 65 69 63

BMP magic bytes: 42 4D

Why convert HEIC to BMP?

HEIC is Apple's efficient camera format — great for storage, but largely unrecognized outside the Apple ecosystem. Windows apps, older software, and embedded systems often have no idea what to do with a .heic file, and installing Apple's codec pack is not always an option.

BMP is the opposite of efficient, but it's the most universally readable uncompressed format that Windows and older applications understand natively. Windows Paint opens BMP without any plugins. Legacy industrial software, older document scanners, and some embroidery or CNC design tools specifically require BMP input. If you're working with a system that rejects HEIC and also rejects JPEG, BMP is usually the format of last resort that will work.

Be prepared for large files. A typical iPhone HEIC photo that's 3–5 MB will expand to 15–30 MB or more as a BMP, because BMP stores raw, uncompressed pixel data with no compression at all. Quality is lossless — every pixel is preserved exactly — but the size trade-off is significant. Only convert to BMP when a specific tool or workflow requires it; for general compatibility, JPEG or PNG are much more practical choices.

Quality & file size: HEIC to BMP

Typical file sizes: HEIC 1.5–3 MB → BMP 35–40 MB.

Both HEIC and BMP use lossy compression. We transcode at high quality settings (equivalent to BMP's recommended web quality) to minimize generational loss.

Color depth: HEIC supports 12-bit, BMP supports standard color.

Transparency: HEIC supports transparency. BMP does not support transparency — transparent areas become solid white.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your HEICfiles are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.