BMP to AVIF Converter
The BMP to AVIF Converter turns large, uncompressed BMP images into compact AVIF files for websites, portfolios and sharing. Photographers select one or more BMPs, set the quality, and each file is encoded as a genuine AVIF in the browser, using its own encoder or a WebAssembly encoder where the browser has none, then downloaded.
Are you a photographer?
Our free tools are built for working photographers — to prep, convert and deliver images without leaving the browser. They’re reserved for photographers, so tell us first.
Unlock every free tool
Sign up or log in to Imagen — it’s free and takes a minute. You only do it once, and every tool on this site opens for you.
These tools are for photographers
We built them for working photographers, so they’re not open to other visitors. Thanks for stopping by.
Loading the tool…
Imagen cuts editing time by up to 96%
Stop spending countless hours on repetitive editing tasks.
Focus on what matters most: your creativity and your clients.
96% Faster editing
Cut your post-production time dramatically with AI-powered automation.
Instant color correction
Apply consistent edits across hundreds of photos in seconds, not hours.
Automated culling
Let AI identify and remove blurry shots, duplicates, and closed eyes automatically.
Batch processing
Edit entire events shoots or portrait sessions while you focus on your next creative work.
Expert Support for Photographers 24/7
Ask us anything, connect with our customer success team.
We go beyond troubleshooting - we’re your partners in optimizing workflows and realizing your creative vision.
No credit card required.
- Faster editing time
- 96%
- Saving on editing costs
- 90%
- Typical turnaround
- 24h
Reviews from those who know best.
Rated 5 out of 5
“The term 'game changer' gets thrown out a lot, but for any busy photographer, this software will change your life.”
Michael AntonyMichael Antony Photography, USARated 5 out of 5
“My survival is due to Imagen… I would MARVEL at how little I had to adjust.”
Charmi Patel PeñaWedding Photographer, USA
Rated 5 out of 5
“It’s so refreshing to start with a high level of quality, and it leaves me with much more energy to spend on my favorite photos.”
Sam HurdSam Hurd Photography, USARated 5 out of 5
“Discovering Imagen has been like someone inventing toilet paper. Simply essential and now life is unthinkable without it. I now know that those years of editing backlogs are a thing of the past. I'm truly grateful.”
Sarah EdmundsPortrait & Wedding Photographer, Italy
Rated 5 out of 5
“It’s a must for me after my culling process. Love Imagen since day one.”
Fer JuaristiFer Juaristi Photography, MexicoRated 5 out of 5
“Thanks to Imagen, I can actually enjoy editing… I have recovered hundreds of hours back.”
Daniel AlonsoPeople TrueLove Tellers, Spain
Frequently asked questions
Why convert BMP files to AVIF?
BMP stores every pixel without compression, so even a modest photo takes up many megabytes. AVIF is a modern image format based on the AV1 video codec, and it compresses photos far more efficiently, usually producing smaller files than JPEG at similar visual quality. That makes it a strong choice for website galleries, portfolios and blog images, where smaller files mean faster pages. All current major browsers can display AVIF.
How do I convert BMP to AVIF?
Click the file area and select one or more .bmp files; other file types are left out. Your files appear in a list marked Pending, and a Quality slider appears, set to 80 percent. Adjust it if you like, then click Convert to AVIF. Each file changes to Processing and then Done, and its AVIF downloads automatically with the same name and an .avif extension. Your browser may ask once for permission to download several files.
What quality setting should I use?
AVIF compression is lossy, and the Quality slider trades detail against file size. The default of 80 percent suits most web images, with little visible difference from the original. For thumbnails or background images, 60 to 70 percent gives much smaller files. For images with fine texture or smooth gradients that will be viewed large, such as skies or skin, try 90 percent or higher. Because the conversion happens on your device, test two settings on one image and compare.
Is the output a real AVIF file?
Yes. Many browsers cannot write AVIF themselves, so the tool uses an AVIF encoder compiled to WebAssembly that runs in the page whenever the browser lacks its own. Each result is checked before saving, and if encoding fails, the file's status shows an error rather than saving a PNG with an .avif name. AVIF encoding is demanding, so large BMPs can take several seconds each, especially on older computers and phones.
Where can I use AVIF files, and what are the limits?
AVIF displays in current versions of Chrome, Edge, Firefox and Safari, and many website platforms accept it. Some older image viewers, editors and email clients cannot open it yet, so keep your BMP originals, or a JPEG copy, for those. If a BMP cannot be read, its status says so. The converted files keep the pixel dimensions of the originals; to make them smaller still for the web, resize the BMP before converting.
Is the BMP to AVIF Converter free and private?
Yes. It is free, adds no watermark and needs no installation. Your images are encoded by your browser on your own device and never leave it. The first time, you answer that you're a photographer and create or log into a free Imagen account, and that unlocks this tool and every other one on the site.
