Image converter
Convert AVIF to BMP
Private format conversion with optional resizing, compression, and adjustments. Your files never leave this browser.
Drag & drop images here, or click to browse
PNG, JPG, WEBP, HEIC, AVIF, BMP, GIF, TIFF — up to 25MB each (max 20 files)
About converting AVIF to BMP
Convert AVIF to BMP when a legacy application requires an uncompressed bitmap. The file becomes much larger, but every pixel is exposed in raw form that even decades-old Windows software can decode.
AVIF is the newest mainstream image format, derived from the royalty-free AV1 video codec and standardized in 2019. It represents the current ceiling of compression efficiency. BMP is one of the oldest Windows image formats, dating to the early days of Microsoft Windows. It stores pixels with essentially no compression.
This conversion crosses compression philosophies: AVIF is lossy and BMP is lossless. That matters for file size, editability, and how the image behaves if you open and save it again later.
When to use AVIF vs BMP
Choose BMP when legacy Windows applications, pixel-art editing, machine-vision pipelines, raw texture data, and software that predates modern formats. Keep AVIF when modern websites, image CDNs, progressive web apps, and any workflow where bandwidth savings outweigh legacy compatibility.
On strengths: AVIF brings often 50% smaller than JPEG at the same perceptual quality, with strong protection against compression artifacts on faces, gradients, and flat color. BMP brings zero decoding complexity, bit-exact fidelity, and acceptance by legacy industrial, scientific, and manufacturing software that refuses compressed formats.
The trade-off: Encoding is computationally heavier, very old devices may render it slowly, and some legacy editors and operating systems still do not support it. Extremely large files — a single screen-sized BMP can be several megabytes — plus weak transparency support and poor handling of photographic content.
One more consideration: AVIF is tuned for photographic imagery full of gradients and fine detail, while BMP performs best on graphics with flat colors, hard edges, or limited palettes. Moving a photograph into the graphic-oriented format tends to look worse per byte than staying in the photo-oriented one.
How to convert AVIF to BMP
The converter runs entirely in this browser tab — there is no upload, no account, and no file-size harvesting. Follow these steps:
- Drop your AVIF files onto the converter above, or click the drop zone to browse. Up to 20 files can queue at once, each up to 25 MB.
- The output defaults to BMP. Adjust the quality slider if the format is lossy, or resize/crop first if you also want to change dimensions.
- Press Convert. Decoding and encoding happen in browser memory using Canvas — your pixels never leave the device.
- Preview the result, then download it individually or grab the whole batch as a ZIP.
About AVIF — AV1 Image File Format
AVIF is the newest mainstream image format, derived from the royalty-free AV1 video codec and standardized in 2019. It represents the current ceiling of compression efficiency.
Typical uses: Modern websites, image CDNs, progressive web apps, and any workflow where bandwidth savings outweigh legacy compatibility.
About BMP — Bitmap picture
BMP is one of the oldest Windows image formats, dating to the early days of Microsoft Windows. It stores pixels with essentially no compression.
Typical uses: Legacy Windows applications, pixel-art editing, machine-vision pipelines, raw texture data, and software that predates modern formats.
Tips for a clean AVIF → BMP conversion
- Work from the highest-quality AVIF source you have. Converting from an already-compressed copy stacks compression artifacts on top of each other.
- You can re-export BMP as many times as needed without losing data — ideal if the file will be edited repeatedly.
- Flatten transparency carefully: check the preview for white or black halos along previously transparent edges before downloading.
- Check the preview at 100% zoom. If fine detail (text, foliage, fabric) looks smeared, raise the quality slider or reconsider the target format.
Frequently asked questions
Is this AVIF to BMP converter free?+
Yes. All image conversions are completely free with no sign-up, no watermarks, and unlimited usage.
Are my images uploaded to a server?+
No. All conversion happens locally in your browser via the HTML5 Canvas API. Your files are never uploaded or stored anywhere.
Will converting AVIF to BMP reduce quality?+
BMP is a lossless format, so the converted file stores every decoded pixel exactly — quality does not degrade during conversion, and you can re-save it repeatedly without generational loss.
Can I convert multiple AVIF files at once?+
Yes — drop up to 20 files into the converter and they will all be processed in a single batch. Each file can be up to 25 MB. The batch downloads as a ZIP, or you can save results individually from the preview.
What happens to transparent areas when converting to BMP?+
BMP cannot store transparency, so transparent pixels are flattened onto a solid background during conversion. If you need to keep transparency, output to PNG, WEBP, or AVIF instead — both are available in the format picker.