Free Online Video Resizer
Resize any video to the exact resolution you need. HD presets or custom pixel dimensions for YouTube, Instagram, TikTok and more — no watermark, no sign-up.
Free to use · No sign-up · No watermark · Up to 500 MB · Files deleted after 24 h
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How to Resize a Video Online
1
Upload Video
Drop in any video file. MP4, MOV, AVI, MKV, and WebM all supported up to 500MB.
2
Choose Resolution
Pick a standard HD preset or enter custom pixel dimensions for your exact needs.
3
Download
Your resized video is ready in seconds — compressed output in MP4 format.
Resolution Reference Guide
Standard Resolutions
4K UHD
3840×2160
Ultra-high definition. Best for large displays.
1080p FHD
1920×1080
Full HD — the most common choice for web and TV.
720p HD
1280×720
HD quality, good balance of quality and file size.
480p SD
854×480
Standard definition, smallest file size.
Social Media Recommendations
YouTube
1920×1080
Landscape 16:9 for best results
Instagram Feed
1080×1080
Square format, 1:1 ratio
TikTok / Reels
1080×1920
Vertical 9:16 portrait mode
Twitter / X
1280×720
Landscape for best display in feed
Frequently Asked Questions
Downscaling (reducing resolution) has minimal visible impact. Upscaling (increasing resolution) does not add real detail — it just increases file size without quality improvement.
YouTube recommends 1920×1080 (1080p) for best quality. 720p is a great choice for faster uploads while still looking sharp on most screens.
Yes, but upscaling does not add new detail — it simply stretches the existing pixels. Results are best kept within 1–2 resolution steps up from the original.
All resized videos are output as MP4 (H.264), which offers the best compatibility across devices, browsers, and platforms.