Downsize: Video Compressor

Compress any video or photo to a target size in seconds — 100% on your iPhone. No uploads, no account, no quality surprises. Hit 10, 25 or 50 MB every time.

Downsize shrinks your videos and photos to fit any size limit — email attachments, WhatsApp, Discord, upload forms — without killing the quality.

Set a target like 25 MB and Downsize does the math for you: it picks the right bitrate, compresses, then checks the real file size and automatically tries again if it's still too big. You get a file under your limit. Every time.

Everything runs 100% on your iPhone. Your videos and photos never leave your device — no uploads, no cloud, no account, no waiting on a server.

COMPRESS TO AN EXACT SIZE • Pick a target: 10 MB, 25 MB, 50 MB, or your own custom limit • Guaranteed under your target — we measure the output and re-compress if needed • See the estimated size before you start

BUILT FOR QUALITY • Modern HEVC (H.265) encoding — same quality at a smaller size • H.264 option for maximum compatibility • Choose resolution, bitrate and frame rate yourself in Expert mode • Proper HDR & Dolby Vision handling — tone-mapped to SDR so your video never comes out washed out

PHOTOS TOO • Compress photos to HEIC or JPEG • Control quality and target size • Smart downscaling keeps images sharp

BATCH CLEANUP • Select many videos at once and compress them in one queue • Review before and after side by side • Free up storage: keep the smaller copy and remove the original — only when you confirm

YOUR ORIGINALS ARE SAFE • Downsize always creates a copy first • Nothing is deleted or overwritten unless you explicitly say so

WHY DOWNSIZE • Private by design — fully offline, nothing uploaded • No subscription — pay once, keep it forever • Fast native compression using Apple's own video engine • Clean, simple interface

Download Downsize and stop fighting with "file too large" errors. — Free: unlimited single-file compression, preset target sizes (10/25/50 MB). Downsize Pro (one-time purchase): batch compression, custom target sizes, expert controls (resolution / bitrate / frame rate / codec)

Privacy Policy: https://yyds2327146024.github.io/doc/dsprivacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/