Tools
Fileraz
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 WEBP 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
Drag quality from 10 to 100, then hit Convert. Your browser decodes the BMP and re-encodes it as WEBP on a canvas locally.
Slider drives the trade
03
Save each WEBP 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 — WebP keeps transparency.
BMP → WEBP
Quality runs 10 to 100 — lower is smaller, higher keeps detail. The estimate is honest because WEBP is lossy.
10–100 · your call
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.
Not here. Use BMP to PNG for a lossless file. WebP output always uses the quality slider.
At high quality, usually close on photos. Screenshots with text are the first place you will see compression. Compare before you delete the BMP.
Up to 30 per batch, each with its own download plus one ZIP. For bulk jobs beyond that, a local CLI (cwebp, ImageMagick) is a better fit.
No. Decode and WebP encode happen on a canvas in this browser tab.
Constraints
Up to 30 images per batch — each with its own download, plus ZIP.
WebP is lossy — quality slider, no lossless mode.
EXIF orientation applied when your browser supports it.
Ready to convert BMP to WEBP in this tab?
BMP in · WEBP out · up to 30 files · 0 bytes uploaded