Slashes the file size
JPG compression turns a bloated, uncompressed bitmap into a file often a tenth of the size — small enough to send and store without a second thought.
BMP to JPG — turn bulky bitmaps into JPG, right in your browser
Drop your bitmap files and get lightweight JPGs in return — easy to email, post, and open on any device. No signup, no watermark.
Add BMP files to convert to JPG
BMP · up to 50 files · 100 MB each
- Free
- Instant
- No signup
Three steps from BMP to JPG
Add your bitmaps
Drag in a single BMP or a whole batch of fifty. They line up together, all using the same settings unless you adjust one.
Choose your quality
Quality 90 is the default and stays crisp for photos and screenshots. Slide it lower if a smaller file matters more than fine detail.
Save your JPG
A lone file downloads on its own; a batch comes back as one ZIP, every image carrying a fresh .jpg name.
Why bitmaps balloon in size — and what JPG changes
BMP is the classic Windows bitmap, the format Microsoft Paint saved to for years. What sets it apart is also what weighs it down: a BMP records the exact color of every pixel as raw data, with little or no compression. A modest photo can swell to tens of megabytes because nothing packs that data tighter. The upside is a perfectly faithful bitmap; the downside is a file that is awkward to store, slow to send, and turned away by many of the places you would want to share it.
JPG takes the opposite approach. Its compression hunts for detail the eye barely registers and drops it, which is how a picture that filled twenty megabytes as a BMP can land under one as a JPG — routinely a tenth of the size or smaller. That efficiency is the whole point of the format, and it is why a JPG slots into an email, a web form, or a phone gallery without complaint. The honest catch is that the compression is lossy: some information really is discarded. AnyResizer converts at quality 90 by default, keeping photos and screenshots clean while still delivering the big size cut.
Because BMP almost never carries transparency, there is nothing to flatten, so the conversion stays refreshingly simple. Drop a single bitmap and the JPG saves straight to your device; drop a whole stack and they return zipped with tidy .jpg names. Every decode and re-encode runs inside your browser through WebAssembly, so no file is sent to a server, and metadata is stripped by default to keep the JPG lean.
Features
Opens on any device
BMP feels dated outside old Windows apps; JPG is read by every phone, browser, and program, so the picture shows up wherever you send it.
Runs in your browser
Your bitmap stays on your machine from start to finish. Open the Network tab mid-convert and you will watch nothing get uploaded.
Built for turning bulky bitmaps into JPG
- Quality 90 by default — photos and screenshots stay crisp
- Typical size cut of 90 percent or more from the original bitmap
- Metadata is stripped so the JPG stays as lean as it can be
- One unreadable bitmap never halts the rest of the batch
Where a BMP-to-JPG swap pays off
Emailing a bitmap
A raw BMP often blows past attachment limits. As a JPG it sends in seconds and previews inline for whoever opens the message.
Uploading to a site or form
Plenty of upload fields quietly refuse BMP. Convert to JPG first and the same file sails through without an error.
Freeing up disk space
A folder of bitmaps eats storage fast. Converting to JPG can reclaim most of that room while keeping the images perfectly usable.
Posting to social and chat apps
Some apps will not take a BMP at all. A JPG posts and shares everywhere, with the file format never getting in the way.
Reviving old screenshots and scans
Legacy tools sometimes saved captures as BMP. JPG makes those archives easy to reopen, forward, and reuse on today's devices.
Dropping images into documents
Word processors and slide decks handle JPG smoothly, where a heavy BMP can bloat the document or refuse to embed cleanly.
Getting the best BMP-to-JPG results
- Tip 1:
Hold on to the original BMP if you ever need a pixel-perfect copy — JPG compression cannot be reversed once it is applied.
- Tip 2:
Leave quality at 90 or above for screenshots and anything with text, so edges and small type stay readable.
- Tip 3:
Want a lossless file that is still far smaller than a BMP? Convert to PNG instead of JPG.
- Tip 4:
Do not keep re-saving between BMP and JPG. Bouncing an image across formats only stacks up the quality loss.
BMP to JPG — common questions
How do I convert BMP to JPG?
Drop your BMP file onto the dropzone, set the quality slider if you like, and hit Convert. The finished JPG downloads straight from your device.
Why are BMP files so large?
A BMP stores every pixel as raw color data with essentially no compression, so the file size scales directly with the image dimensions. That leaves even an ordinary picture surprisingly heavy next to a compressed format like JPG.
How much smaller will the JPG be?
Usually a great deal — reductions of 90 percent or more are common. A bitmap of twenty or thirty megabytes often becomes a JPG of a few hundred kilobytes at quality 90, depending on the image.
Does converting BMP to JPG lose quality?
JPG is lossy, so a little detail is discarded to earn the size saving. At the default quality of 90 the change is very hard to spot on most photos and screenshots. Keep the BMP if you want an untouched original.
What about transparency?
BMP files almost never store transparency, so there is normally nothing to flatten and the conversion comes out clean. In the rare case one does, any see-through area is filled with a solid background. For guaranteed transparency, use PNG instead.
Can I convert several BMP files at once?
Yes. Drop up to 50 bitmaps in a single go. They share the same quality setting unless you override one, and they download together as one ZIP full of .jpg files.
Are my BMP files uploaded anywhere?
No. Every bitmap is decoded and re-encoded inside your browser using WebAssembly. Your file never leaves your device, and nothing is kept afterward — you can confirm it in your browser's Network tab.
Should I keep the original BMP?
If you might need a lossless master later, yes — store the BMP somewhere safe and treat the JPG as your shareable copy. If the bitmap was only a bulky intermediate, the JPG usually replaces it without any regret.
Related tools to try
Image Converter (hub)
Convert between JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, TIFF, and SVG in one place.
PNG to JPG
Flatten a transparent PNG into a lighter JPG that every app accepts.
TIFF to JPG
Shrink another heavyweight format down to a compact, easy-to-share JPG.
Image Compressor
Take your new JPG down further in size while keeping it looking sharp.
Image Resizer
Set new dimensions by pixels, percentage, or longest edge, before or after converting.
Have bitmaps that are too bulky to send?
Drop them in and get back small, universal JPGs that send in seconds and open on anything.