Budget is already on
The Studio opens with a 50 KB cap enabled. Drop a file and process — no hunting for the size-budget toggle.
Size budget · 50 KB
Compress images under 50 KBwithout guessing quality
Email, Slack, and some CMS fields still cap files at 50 KB. Open Studio with a 50 KB size budget already on — Asset Melt searches quality (and resizes only if it must) until the file fits. 100% client-side.
Built for this exact job
Everything you need — no uploads, no accounts, no compromises.
Highest quality that fits
Binary-search quality on JPEG, WebP, AVIF, or JPEG XL. Resize is allowed when quality alone cannot hit 50 KB.
Batch the same cap
Queue a folder. Each file is encoded to the 50 KB budget on its own, then downloaded as a ZIP.
Nothing is uploaded
Encoding runs in Web Workers on your device. Photos are not sent to a server, and session replay does not include image pixels.
Three stepsno upload step
Open the studio, process your files locally, and download — all in your browser.
Open Studio at 50 KB
This page deep-links Studio with size budget on and the target set to 50 KB.
Drop images
Add JPEG, PNG, WebP, AVIF, HEIC, or a folder. Nested images are queued; non-images are skipped. GIF uses the first frame only — animation is not encoded. TIFF uses the first page only. HEIC / HEIF is decoded through JPEG at quality 0.92 before the rest of the pipeline, so HEIC→PNG or HEIC→AVIF is not lossless from the original.
Process and download
Compare before/after. If 50 KB is met, you will see it on the preview. Download one file or a ZIP.
When 50 KB is the real constraint
Fifty kilobytes is a thumbnail and attachment budget, not a hero-image budget. Profile photos, email signatures, Slack-adjacent assets, and older CMS “tiny image” fields still enforce it.
A 2400px photo will not look like the original at 50 KB. Resize to the real display size first — Studio will also scale down if quality search cannot land under the cap.
What size-budget encoding actually does
Asset Melt binary-searches encode quality for JPEG (MozJPEG), WebP, AVIF, and JPEG XL, then scales the bitmap only if the smallest useful quality is still over budget.
Need a looser cap? Use the 100 KB or 200 KB pages. Need a walkthrough? The under-100 KB guide covers resize-then-encode order in more detail.
Honest limits
Size-budget encoding runs on JPEG, WebP, AVIF, and JPEG XL only. PNG and QOI are skipped — PNG stays lossless Oxipng unless Reduce palette is on, which is not a byte-cap search. These pages switch a saved PNG pipeline to WebP so the budget can run.
HEIC / HEIF is decoded through JPEG at quality 0.92 before the rest of the pipeline, so HEIC→PNG or HEIC→AVIF is not lossless from the original. GIF uses the first frame only — animation is not encoded. TIFF uses the first page only.
Common questions
Quick answers before you open the studio.
Related pages
Other ways Asset Melt can help with your images.
Ready to try it?
Open Asset Melt Studio — free, no account, no uploads. Your files stay on your device.
Open Studio — under 50 KB