Make a smaller MP4 from your MOV video. Your file is processed on this device.
How to Compress a MOV File
- Add your video. Drop a MOV file into the tool or choose it from your device.
- Choose how to compress it. Start with Medium quality, or switch to Target size and enter the MB you need.
- Compress and download. Keep the tab open while it works, then preview and save the MP4.
The tool checks your file and browser before encoding. An unsupported recording will show an explanation.
Why Compress MOV Files?
A camera clip, iPhone recording, or QuickTime export can be too large to attach, upload, or keep on a crowded drive. Compression can make it easier to share.
MOV is a container: the video and audio codecs inside it determine how it plays and how much it can shrink. A MOV file is not automatically higher quality or larger than an MP4.
Compression vs Quality
For a video of the same duration, bitrate has a direct effect on file size. Reducing the resolution can help make a lower bitrate look better, but changing the dimensions alone does not guarantee a smaller file.
Quality mode offers High, Medium, and Low presets. Target size mode adjusts the bitrate toward your chosen size. These are separate modes: a small target cannot also guarantee high quality.
Leave the resolution on Original to keep the dimensions, or choose 1080p, 720p, or 480p to reduce them. Preview the result before replacing or sharing your original.
Compressing Large MOV Files
Local processing avoids uploading a large source file. It still needs a supported decoder and encoder, memory, processing time, and enough local space for the output.
For multi-gigabyte recordings, use a computer, keep it awake, and check the file before starting a long job. Read the large video guide for the practical limits.
MOV Compression on Your Device
The tool checks whether your browser can decode the selected video and encode an MP4. Support depends on the codecs inside the file as well as your browser and device; the extension alone is not enough.
You can also select MP4, WebM, MKV, M4V, and MPEG-TS inputs. Supported files are compressed to MP4. Some unsupported codecs and older containers can use an additional local compatibility component. It accepts files up to 128 MiB, with output up to 1080p and 96 MiB; it is not a fallback for multi-gigabyte recordings.
HDR, transparent video and multiple video tracks are not supported yet. If a phone cannot process an SDR recording, try the same file on a current desktop browser.
Target File Sizes by Use Case
| Use case | Starting point |
|---|---|
| Email attachment | 20 MB, then check your provider |
| WhatsApp sharing | 15 MB for a smaller, easier-to-send file |
| Another website or app | A target below its current upload limit |
These are compression presets, not universal platform limits. For several attachments, allow space for their combined size.
Questions & answers
How much can a MOV file be compressed?
It depends on the duration, content, and original bitrate. A high-bitrate recording may shrink substantially; an already compressed video may have little room left. The tool shows the actual input and output sizes so you can compare.
Will compressing reduce the quality?
Re-encoding can change image and sound quality. Start with Medium for sharing, try High when detail matters, and use a smaller target only if you can accept more loss. Keep the original and preview the result.
Is there a file size limit?
There is no server upload step. The practical limit depends on your browser, codecs, memory, and available local storage. A large file can still fail on a device that cannot process or save it.
Is my video uploaded or stored?
The video is processed locally and is not uploaded to our servers. Clear the queue to remove its temporary results. The storage cleanup button checks unused results left by closed tabs while keeping results in active tabs. Closing a tab alone does not guarantee immediate removal. Downloaded copies are separate.
Can I compress several MOV files?
Yes. Select multiple files to add them to the queue. Each file is checked and processed separately, and you can download each successful result.
Why will my MOV file not open on Windows?
The player may not support the video or audio codec inside that MOV file. If this browser can decode it, compressing to an MP4 with H.264 video and AAC audio can improve playback compatibility. Check the downloaded file in the player you plan to use.