SMALLER MP4 FILES

Compress MP4 Online

Upload an MP4, choose how aggressively to reduce it, and create a smaller MP4 with a compact, purpose-built workflow.

✓ MP4-in, MP4-out workflow✓ Resolution downscaling when useful✓ Balanced profile recommended

✓ No account required✓ Live progress✓ Automatic cleanup

Converter readyUp to 400 MB per request • 250 MB per file

250 MB per file400 MB per request45 min max video~30 min auto-delete

Drop MP4 files here or click to browse from your device No files selected MP4, MOV, MKV, AVI, WebM, MP3, WAV, FLAC, M4A, AAC, OGG, OPUS + more

Convert to Recommended MP4 is recommended for broad video compatibility.

Output quality

Highlarger file Balancedrecommended Smallermore compression

Smart output: MP4Best overall compatibility for video playback and sharing.

Size depends on source

Compression settingsFine-tune the output

Maximum resolutionNever intentionally upscales; server limit: 1080p. Audio bitrateUsed by compressed audio outputs and video audio tracks. Sample rate48 kHz is common for video production. Output filename

.mp4

Available for single-file conversion. Trim startOptional HH:MM:SS or seconds. Trim endLeave blank to convert to the end. Remove audioCreate silent video output.

✓ Format-aware settings✓ Live queue progress✓ Files expire after ~30 min

WHY USE THIS TOOL

A focused MP4-in, MP4-out compressor

Use it when the format is already right but the file is simply too large.

No format decision

The tool keeps the MP4 workflow fixed so you can focus on size and quality.

Useful for upload limits

A smaller MP4 is easier to send, upload, store and play over slower connections.

Avoid unnecessary upscaling

Resolution controls are designed as maximums, so the tool does not intentionally enlarge a smaller source.

HOW IT WORKS

How to compress an MP4 file

1
Choose an MP4
Upload the MP4 file you want to reduce.
2
Select quality and resolution
Balanced plus Original resolution is a sensible first try; reduce resolution for a bigger size reduction.
3
Save the result
Download the compressed MP4 after the live progress reaches 100%.

Good to know

If the source is already heavily compressed, large additional reductions may become visually noticeable.

RELATED TOOLS

More Ways to Work With Your Media

Use a focused tool when you know the task, or open the universal converter for full format control.

QUICK ANSWERS

MP4 Compressor FAQ

Can I compress MP4 without changing the format?

Yes. This page is intentionally MP4 in and MP4 out.

Which setting should I try first?

Balanced quality with Original resolution is a good first pass. If the file is still too large, try Smaller or a lower resolution.

Does a lower resolution reduce file size?

Usually yes, especially when converting high-resolution sources to 1080p, 720p or below.