Is this AVIF 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 AVIF 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.

When would I need AVIF converted to BMP?

Mainly for legacy Windows software, certain CNC machine interfaces, older scientific instruments, or any system that pre-dates modern codec support and only reads BMP.

Is there quality loss converting AVIF to BMP?

The decoded pixels from the AVIF are stored uncompressed in BMP, so no further quality loss occurs. However, any lossy compression already applied when the AVIF was created cannot be undone.

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.

AVIF to BMP Converter — Free, Online, No Upload

How to convert AVIF to BMP online

1
Drop your AVIF file
Drag and drop your AV1 Image File Format 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 AV1 Image File Format → 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.

AVIF vs BMP: format overview

AVIF

AV1 Image File Format

Alliance for Open Media · 2019

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

✓ Smallest file size of any image format (50% smaller than WebP)
✓ Excellent HDR and wide-gamut color support
✗ Slow encoding (computationally expensive)

BMP

Bitmap Image File

Microsoft · 1987

Compression: none
Transparency: No

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

AVIF magic bytes: 00 00 00 .. 66 74 79 70 61 76 69 66

BMP magic bytes: 42 4D

Why convert AVIF to BMP?

AVIF achieves excellent image quality at small file sizes, but it's a format that some software — particularly older Windows applications, legacy industrial tools, and certain embedded systems — has never been updated to support. If your application throws an error when it encounters an AVIF file, BMP is often the safest fallback because it's been part of Windows since version 1.0.

BMP is a completely uncompressed format, which makes it readable by nearly any image-processing software ever written for Windows. Label printers, CNC software, older versions of Visual Basic and Delphi applications, some kiosk display systems, and certain industrial automation tools require BMP because it's the only format their rendering engine knows. Converting AVIF to BMP gives you a file that will open without plugins, codecs, or software updates.

The file size increase is dramatic. A well-compressed AVIF might be 200 KB; the equivalent BMP will be 5–20 MB, because BMP stores raw uncompressed pixel data for every pixel. Quality is lossless in the sense that no further compression is applied, but the AVIF codec may have already made quality trade-offs when the source was created. Convert to BMP only when a specific tool requires it — for most compatibility needs, JPEG or PNG are far more file-size efficient.

Quality & file size: AVIF to BMP

Typical file sizes: AVIF 0.8–2 MB → BMP 35–40 MB.

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

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

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

Frequently asked questions

Privacy: how FormatDrop handles your files

Your AVIFfiles 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.