Bring your video.
That clip, demo, or moment worth sharing. Choose a file that your browser can play.
Browser betaKeep your original while we continue improving browser compatibility.
MORE ROOM FOR THE DETAILS.
Less file size.
Room for a bigger story.
Start with a 25 MB budget for a little more detail.
Your file stays local from start to finish.
No signupNo watermark100% local processing
YOUR VIDEO, JUST LIGHTER.BROWSER EDITION v0.2
01
Add your video
STAYS ON YOUR DEVICEDrop it like it’s too big.
Drag a video here, or pick one from your device.
MP4, MOV, WebM · Up to 250 MB / 10 minNo video upload. Ever.
Making room for your video...
Preparing the browser encoder.
THE SIZE CHECK IS IN
A little lighter. Ready to share.
Original
New size
Built around your privacy, not your files.Real-time encoding · MP4 or WebM, browser-dependent
LESS FRICTION. MORE SHARING.
Three steps. Zero uploads.
Give it a little less room.
Choose a maximum size. We balance the bitrate, resize if needed, then check the finished file.
Take the lighter version.
Preview it, download it, and send it your way. No watermark. No account standing in the way.
YOUR FILES ARE YOUR BUSINESS.
On your device. Off our servers.
No video uploads, no tracking scripts, no signup.
The only thing getting smaller is your file.
A LITTLE KNOW-HOW
A 25 MB file is not a 25 MB email.
A 25 MB target can preserve more detail than 8 or 10 MB for the same clip, but it is still a maximum size, not a quality guarantee. SmallerKit uses the duration to budget the available bitrate and adjusts dimensions when Auto resolution is selected.
Do not assume a video just under 25 MB will fit a provider's 25 MB email limit. Message encoding and other attachments may add overhead. Use the email preset for extra headroom, then check the receiving system's limit.
If your original already fits, you can download it unchanged from the file panel. Re-encoding is optional and may lose detail. SmallerKit shows the original size so you can make that choice before spending time compressing.
GOOD QUESTIONS.The small print,
The small print,
without the small type.
Everything you should know before
making something smaller.
Should I compress a file that is already under 25 MB?
Not necessarily. Re-encoding can lose quality. SmallerKit lets you download the original unchanged when it already fits. Compress only when you need it smaller or need a supported alternative output format.
Does my video leave my device?
No video data is uploaded by this app. The browser reads the file locally and encodes the result on your device. There are no analytics scripts, accounts or remote processing services in this version. Your web host can still log ordinary page requests.
Which video formats can I use?
Input depends on what your browser can play. MP4, MOV and WebM are common containers, but the codec inside matters. For output, SmallerKit checks for H.264 MP4 support first and otherwise offers WebM. It never disguises one format with another extension.
How long does compression take?
This version records at playback speed, so allow roughly the length of the clip for each attempt, plus preparation. It may retry twice if the first file is over target. Keep this tab visible and your device awake; switching away stops the attempt to avoid an incomplete result.
Is it free? Are there any limits?
This build has no payment system, signup or watermark. For predictable memory use, it accepts one video at a time, up to 250 MB and 10 minutes. Browser resources still vary; a file within those limits can fail on a low-memory device.
Will the compressed video keep its original quality?
Not exactly. Re-encoding is lossy and can change resolution, frame rate, colors or audio. This version targets standard SDR clips, not HDR mastering. Preview the result and retain your original. Captions, chapters and extra audio tracks are not preserved.