UnderMB: File Size Compressor

UnderMB helps you reduce photo, video, audio, and PDF file sizes to fit common upload limits. Processing happens on your device.

WHAT IT DOES • Choose a target size: 500 KB, 1 MB, 2 MB, 5 MB, or a custom value • Compress images, videos, audio files, and PDFs • Preview results before saving or sharing • Built-in presets for email, visa forms, WhatsApp, and similar uploads • Optional metadata removal (EXIF/GPS, PDF info) • Batch queue for multiple files • Save to Files or share from the app

PRIVACY UnderMB does not require an account. Files are processed locally and are not uploaded to UnderMB servers.

GOOD FOR • Forms and portals with file size limits • Smaller email attachments • Chat apps with upload caps • Reducing file size before sharing