Tools
Fileraz
Try jpg to png, compress image, pdf…
Image tool
Simple 3-step flow
Drop up to 30 BMP files, tune once, and download PNG files plus one ZIP — decoded and re-encoded in this tab.
01
Drop up to 30 BMP files from this device. Each shows as a preview card with a live size estimate. Drag to reorder.
Batch of 30 · drag to reorder
02
Hit Convert. Your browser decodes the BMP and re-encodes it as lossless PNG on a canvas locally.
No slider — lossless
03
Save each PNG individually or grab one ZIP for the batch. The sources on disk stay put.
Encoded locally · 0 bytes uploaded
What the workspace does
These match the converter — the pair rule, the quality rule, and local-only processing.
Alpha survives the trip — transparency is preserved in PNG output.
BMP → PNG
PNG keeps every pixel exactly, so there is no quality slider — size is whatever lossless takes.
No slider needed
Privacy architecture
Cloud converters upload the image to flip its format remotely. This one decodes and re-encodes on a canvas here — the file never leaves the device.
Legacy cloud tools
Uploads the image to a remote queue.
Fileraz
0 bytes leave this machine. Canvas encode runs in this tab.
Legacy cloud tools
Accounts and quotas on free tiers.
Fileraz
Never — there is no public sign-up at all.
Legacy cloud tools
You only get back what the server kept.
Fileraz
Source stays on disk. Output is a fresh encode.
Honest output
Format conversion changes the container and compression — it never invents pixels, transparency, or detail.
Answers
Quality, transparency, and whether BMP files are uploaded.
No. It should look the same. PNG cannot add detail; it only stores the decoded pixels without JPEG-style damage.
PNG output is lossless. The slider appears only when the target is JPG or WebP.
This tool does not special-case BMP alpha. Ordinary 24-bit BMPs are opaque; do not expect a cut-out background unless the decoder already produced one.
No — up to 30 BMP files per batch, each with its own estimate and download.
Constraints
Up to 30 images per batch — each with its own download, plus ZIP.
PNG — no quality slider.
EXIF orientation applied when your browser supports it.
Ready to convert BMP to PNG in this tab?
BMP in · PNG out · up to 30 files · 0 bytes uploaded