Compress to an Exact Size
Pick a size in KB or MB, or a preset for the app you are sharing to. Your image or video is compressed to fit, right in your browser.
Need batch processing or bigger files? Download Compresso for folders, big videos, and offline compression.
Some uploads come with a size limit. A form that caps attachments, a chat app that rejects your clip, an email that bounces back. This tool flips the problem around: instead of compressing and hoping, you pick the size you need and the file is compressed to fit under it.
Pick a preset for the place you are sharing to, or type your own target in KB or MB. Images are resized and re-encoded in steps until they fit. Videos get a bitrate matched to their length, so a 10-second clip and a 10-minute clip both land under the same target.
Everything runs in your browser. Your file never gets uploaded anywhere, which makes this a private option for personal videos and work documents. One file at a time here. For batches, folders, and big 4K files, download Compresso for Mac or Windows.
Frequently Asked Questions
How do I compress a file to an exact size?+
Drop your image or video, pick a preset like WhatsApp or Discord, or type your own target in KB or MB, then hit compress. The tool steps quality and resolution down until the file fits under your target.
Do you upload my file anywhere?+
No. The compression runs entirely in your browser tab. Your file never leaves your device, which you can verify by watching the network tab while it works.
What if my target is impossible to reach?+
The tool will not hand you a destroyed file just to hit a number. If the target needs unacceptable quality loss, you get the closest honest result and a clear note about it.
Can I compress many files at once?+
This page handles one file at a time. For batches, folders, and files over the browser limit, the Compresso desktop app for Mac and Windows does the same target-size compression offline, at scale.
Try Other Free Tools
Need to compress batches or big files?
Download the app for Mac or Windows. Compress photos and videos offline. Personal is up to 200 files. Studio is unlimited.
Free to download • 100% offline