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.
LESS ATTACHMENT. MORE CONVERSATION.
Send the video.
Skip the oversized file.
A little headroom for your next attachment.
Compress privately, then attach it yourself.
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
Leave room for the rest of your email.
The 18 MB email preset is a conservative starting point, not a universal provider limit. Email systems can count message encoding, other attachments and the message body. Check both your sending provider and your recipient's limit before choosing a size.
For a presentation recording, prioritize readable text over motion. Choose a higher resolution when the budget allows, or shorten the recording first. Very small targets may make screen text difficult to read.
SmallerKit does not connect to your inbox or send messages. Download the result and attach it yourself. For a recipient with uncertain video support, prefer H.264 MP4 when your browser offers it; otherwise consider sharing a file link through your own trusted service.
GOOD QUESTIONS.The small print,
The small print,
without the small type.
Everything you should know before
making something smaller.
Does the email preset guarantee delivery?
No. Receiving servers, account policies, encoding overhead and other attachments affect delivery. The 18 MB preset leaves some headroom, but you should adjust it for the limits of both mail providers.
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.