Drop a folder, or click to choose images
JPEG · PNG · WebP · AVIF · HEIC · SVG · GIF · JXL · TIFF
Files never uploaded · 100% client-side · I cannot see your photos · Privacy policy
Pipeline ready: BMP → PNG (any input still accepted)
Asset Melt Studio is a BMP to PNG converter that runs entirely on your device. Replace huge BMP dumps with portable PNGs — BMP is uncompressed, so BMP to PNG is one of the most dramatic lossless-feeling wins in the studio.
Drop one BMP or a whole folder — the pipeline is already set to PNG using Oxipng (optional imagequant palette). That is the BMP to PNG workflow people search for: convert BMP to PNG without an upload, then resize, crop, or hit a size budget (when the codec allows) before you download.
Input is not locked to BMP: you can still open JPEG, PNG, WebP, AVIF, HEIC, GIF, and more in the same session. The BMP to PNG URL simply pre-selects PNG so bmp to png jobs start in one click.
A phone UI screenshot dumped as BMP.
~93% smaller
Before · BMP5.8 MB — Uncompressed UI dump
After · PNG380 KB — Oxipng
Step 1
You are already on the BMP to PNG converter. Output is pre-selected as PNG. You can still drop mixed formats — the BMP to PNG URL is a starting point, not a file-type lock.
Step 2
Drag BMP images onto the studio, click to choose, or paste. Folder drops queue nested images. Then process — BMP to PNG encoding runs in Web Workers on this device.
Step 3
Use the before/after scrubber until the BMP to PNG result looks right. Adjust quality, crop, or resize, then download one PNG or a ZIP of the batch.
| Topic | BMP | PNG |
|---|---|---|
| Compression | Uncompressed BMP | Lossless PNG (Oxipng) |
| Typical size | Huge | Much smaller |
| Alpha | Rare / limited | PNG alpha if present |
| Size budget | N/A | Supported (palette search) |
| Web use | Do not | OK for graphics |
Windows screenshots, old scanners, and some lab tools still emit BMP. Emailing a BMP is how you discover attachment limits. BMP to PNG is the portable fix.
PNG is lossless Oxipng by default, so BMP to PNG keeps the bitmap. For simple logos, Reduce palette can go further (lossy PNG-8).
Do not use BMP on the web. Convert BMP to PNG (or WebP) before you publish.
| Source | Before | After | Note |
|---|---|---|---|
| 1920×1080 BMP | ~6 MB BMP | ~400 KB PNG | Screenshot-like |
| Logo BMP | ~1 MB BMP | ~20 KB PNG | Flat colors compress well |
| Photo BMP | ~20 MB BMP | ~8 MB PNG | Still large — prefer WebP |
Drop BMP files. Oxipng out. Optional palette.
Size budget on PNG binary-searches palette colors.
Batch a folder of BMP exports from a device that only speaks BMP.
Any BMP that needs to be shared or archived.
When a Windows tool saved a screenshot as BMP.
Skip BMP to PNG only if you actually need BMP for a picky industrial importer.
Lossless BMP to PNG should look identical. If you enable Reduce palette, you are choosing TinyPNG-style loss on purpose.
Leave palette off for photos and screenshots with gradients.
Oxipng level 4 is a good default; 6 is slower/smaller.
For web, consider BMP to WebP instead of BMP to PNG.
Image processing is 100% client-side in your browser with WebAssembly. Your photos are not uploaded, I cannot see or recover them, and sampled session replay is UI-only and does not include image pixels (media is blocked). The site still sends usage analytics and crash reports — details are on the privacy page. That includes every BMP to PNG job — the converter never needs your files on a server.
Upload compressors send your bitmap to someone else’s API. Asset Melt keeps bmp to png on this device. Session replay, if sampled, is UI-only and does not include image pixels.
Related conversions