BMP → PNG
BMP to PNG
To convert BMP to PNG, choose your images below, convert them in your browser, and download the results. No image is uploaded.
Your images NEVER leave your device. No uploads. No copies on a server. Your browser does all the work. How privacy works →
Drop your images or a ZIP here
or choose files from your device
PNG can make large files for photos. For a smaller file, try JPG. Convert to JPG
Choose images to start.
Your files are ready
You can also choose a ZIP of BMP images: it is opened in your browser and the results come back as a ZIP.
How it works
Drop images or a ZIP in the box, or choose them from your device.
Set the options and press the convert button.
Check it and save it. Your originals stay unchanged.
Questions, answered
Does PNG keep transparency?
Yes. PNG supports transparent areas. If your image has none, nothing changes, but the PNG is usually bigger than a JPG of the same picture.
Why is my BMP file so big?
BMP stores every pixel uncompressed. Converting to JPG or PNG usually makes the file many times smaller.
Is it free?
Yes, 100% free. No account, daily limit, per-image quota or payment to keep converting. Convert as many images as you need in successive batches. Practical limits still apply: device memory, browser support, up to 5,000 supported files per ZIP and 256 MB per extracted file.
Are my images uploaded to a server?
No. Conversion runs entirely in your browser, so personal photos and company documents are as safe here as on your own computer. Many online converters upload your files to a server and you never know where they end up; here there are no uploads and no account. Your images never leave your device.
Does it work on a phone or tablet?
Yes, in an updated mobile browser. Conversion uses your device’s memory, so on a phone convert in smaller batches and keep the tab open while it works.
Is there a file size or batch limit?
There is no fixed quota. The practical limit is your device’s memory: very large images and big batches can be slow or fail. Inside a ZIP, files over 256 MB are skipped.
Will I lose image quality?
PNG preserves the decoded pixels but cannot restore detail already lost in the original. JPG and PDF use JPEG compression. Metadata, HDR and animations are not preserved.
What if conversion fails?
Try an updated browser and a smaller batch. Unsupported codecs, corrupt files or insufficient memory may prevent conversion.
Can I convert a ZIP of BMP files?
Yes. Drop a ZIP with BMP images and TotImages opens it in your browser, converts each BMP file to PNG and gives you a ZIP of results. Nested ZIPs and other file types are skipped, a damaged file does not stop the rest, and nothing is uploaded.