Add the BMP bitmap
Drop, paste, or choose the bitmap that a modern web workflow needs in AVIF. It stays in your browser.
Free BMP to AVIF converter
Convert BMP toa modern AVIF image.
Fileverses converts a BMP bitmap to AVIF in your browser for a modern site or image workflow. AVIF can be more efficient than an uncompressed bitmap, but this is a new encoded image: inspect its size and visual result, and do not expect an opaque BMP to gain transparency.
- Private by design
- Default AVIF
- Paste supported
Files stay in this browser
All conversion runs on-device
AVIFBMPEPSGIFICNSICOJPGODDPNGPSPSDTIFFWEBP
About this converter
Free BMP to AVIF conversion, built for a real workflow.
BMP is a simple bitmap format often used by Windows-oriented or legacy workflows, while AVIF is a modern compressed image format suited to current web delivery. This tool decodes the BMP in your browser and asks the browser to encode the rendered pixels as AVIF. That can make a BMP practical for a website or platform that accepts AVIF, but it cannot restore detail lost before the BMP was created, guarantee a smaller file for every image, or create transparent pixels from an opaque source. Compare the AVIF in the intended browser or CMS before replacing the original bitmap.
- BMP is commonly uncompressed, while AVIF is a modern encoded web image; output size depends on dimensions, content, and browser encoding.
- AVIF supports alpha, but conversion does not remove an existing BMP background or invent transparency from opaque pixels.
- Use AVIF for a destination that supports it; retain BMP when a legacy Windows or bitmap-only workflow explicitly requires that format.
- This is a new browser encode, not an archival copy. Review important edges, gradients, colors, and file size before publishing.
How it works
Upload once.
Export AVIF.
Keep AVIF selected
AVIF is preselected here for a current web-image workflow rather than a legacy bitmap handoff.
Convert and review
Download the AVIF and test its visible result, background, and file size in the site, CMS, or recipient application before replacing the BMP.
Made for real pipelines
BMP to AVIF.
One workspace.
Convert without uploading your assets. Switch outputs anytime — web, print, icons, and document targets from the same batch.
Convert BMP to AVIFModern AVIF handoff
Create an AVIF when the next site or image workflow accepts a modern compressed format.
Honest alpha behavior
AVIF supports alpha, but this tool does not claim that an opaque BMP gains a transparent background.
Review before delivery
Check size and visible detail after the new browser encode before replacing the original bitmap.
Good to know
Questions, answered.
Why convert BMP to AVIF?+−
Convert when a website, CMS, or image pipeline supports AVIF and you no longer need the BMP for a legacy Windows workflow. AVIF is a modern delivery format; BMP remains useful when a destination explicitly requires a bitmap.
Will BMP to AVIF always make the file smaller?+−
No. BMP files are often large because they store simple bitmap data, but AVIF size still depends on dimensions, image content, and browser encoding. Compare the downloaded AVIF when an upload or performance budget matters.
Does converting BMP to AVIF remove the background?+−
No. AVIF can support transparency, but this converter re-encodes the visible BMP pixels. An opaque BMP stays opaque; the tool does not detect, remove, or create a background.
Can BMP to AVIF restore image quality?+−
No. Conversion cannot recreate detail lost before the BMP was made. AVIF is a newly encoded result, so inspect fine edges, gradients, colors, and important artwork before publishing.
Where can I use the converted AVIF?+−
Use it in current-browser sites, CMSs, and image workflows that explicitly support AVIF. Keep a compatible fallback for older software or platforms that only accept BMP, JPG, PNG, or another format.
Does Fileverses upload BMP files to convert them to AVIF?+−
No. Fileverses performs this BMP-to-AVIF conversion in your browser, so the source image is not sent to a conversion server.