Convert BMP to JPG in your browser
Compress uncompressed BMP bitmaps as small JPEG files with quality control. Conversion runs locally — nothing is uploaded.
image/bmp,.bmp · runs locally · nothing uploaded
How it works
Pick an image, tune the options, then download the result. Everything runs in your browser.
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Pick a BMP
Choose a .bmp bitmap. The original stays on disk untouched.
Files stay in memory as an
HTMLImageElement— the original bytes are never uploaded, and EXIF metadata is preserved until you explicitly transform it.uploadcanvaslocaldecodeinput · bytesbmp · loadedfile.bmp
loaded · decodedcanvas · ready - 02
Decode pixels
The browser draws the BMP onto a hidden canvas to access raw pixels.
Encoder quality is exposed where the format supports it — JPEG and WebP get a
0–1quality slider; PNG is lossless. Options re-render the canvas immediately.decodeoptionslive previewencoderqualitycanvas · tunabledraw · livectx.drawImage(img, 0, 0)
options applied · liveencoder · live - 03
Tune quality
Drag the slider to balance size and fidelity. 90%+ is visually lossless on photos.
Pixel work runs on the Canvas 2D context —
drawImageresamples with the browser’s bilinear filter andgetImageData/putImageDataback per-pixel passes.qualityrenderCanvas 2Dpreviewpx-perfectquality · resampled92% · px-perfecttoBlob("image/jpeg", q)preview · livepx-perfect - 04
Download JPG
Save the .jpg file. Expect dramatic size savings over uncompressed BMP.
Downloads ship via a hidden anchor with an object URL — no server round-trip, and the file on disk is untouched. The output filename inherits a sensible suffix.
exportdownloadblobclient-sideobject URLok · blobready · savedfile.jpg
shipped · ready to shipsuccess
Browser-only image work that scales
Convert with quality control
JPEG/WebP let you pick a 0–1 quality. Default 0.92 is a good compromise of size and visible quality.
PNG isn’t free
Use PNG only for transparency or sharp edges. For photos, WebP is smaller at the same perceived quality.
Strip EXIF for privacy
Photo EXIF often contains GPS, camera model, and timestamps. Strip before sharing public uploads.
Watch the colour profile
Convert to sRGB before web export. Wide-gamut images render oversaturated in non-managed browsers.
AVIF when it’s available
AVIF beats WebP on size at the same quality. Detect support via <picture> with fallbacks.
Lazy-load below the fold
Add loading="lazy" on <img>. The browser handles scheduling — no IntersectionObserver needed.
When to use this tool
Common workflows it speeds up.
Archive shrink
BMP archives compress 10–50× as JPEG. Decoded into a Canvas 2D context — original bytes never leave the tab, so you can process customer-uploaded photos, internal screenshots, or sensitive diagrams without privacy concerns.
px-perfectWeb-ready photos
Cut hosting and bandwidth cost. Encoders expose quality 0–1 where the format supports it (JPEG, WebP); PNG and AVIF stay perceptually lossless. Pick 0.85 for web, 0.95 for archival, 0.7 for thumbnails.
quality-tunableEmail-safe attachments
Slip under typical mail limits. Pair with the EXIF Stripper before sharing user-uploaded photos publicly. Camera serial numbers, GPS coordinates, and timestamps often hide in image metadata and leak more than the picture itself.
format-awareLegacy export migration
Modernize 90s-era BMP captures. Output preserves colour profile (sRGB) so it renders consistently across browsers, monitors, and print pipelines. Wide-gamut workflows can opt into Display P3 for modern Apple devices.
EXIF-safeFaster previews
JPEG opens faster than huge BMPs. Re-runs only on option changes, never on window resize, so the canvas stays responsive on large images. drawImage uses the browser's bilinear filter for fast resampling.
client-sideUniversal compatibility
Every viewer and CMS reads JPEG. Downloads as .png, .jpg, .webp, or .avif with the correct MIME so editors apply native handling on save. The filename inherits a sensible suffix derived from the input.
compression-readyFrequently asked questions
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