Free — no credits

Free Thumbnail Resizer

Convert a YouTube thumbnail (16:9) to TikTok cover (9:16), Instagram post (1:1), or Podcast art (1:1) — instantly, free, no AI credits used.

Coming soon — Q3 2026

Join the free beta

The Resizer is always free — no AI credits. Join the beta to be first to use it.

Use this reference while the Resizer is in development.

PlatformRatioRecommended sizeMax fileNotes

YouTube16:91280 × 720 px2 MBStandard video thumbnail

YouTube Shorts9:161080 × 1920 px2 MBVertical short-form video

TikTok9:161080 × 1920 px10 MBVideo cover / background

Instagram1:11080 × 1080 px30 MBPost and Reels cover

Podcast1:13000 × 3000 px512 KBApple Podcasts spec

Twitter/X16:91200 × 675 px5 MBIn-feed summary card

LinkedIn4:11584 × 396 px8 MBProfile banner

Substack2:11200 × 630 px10 MBNewsletter cover image

Sizes as of June 2026. Platform specs change occasionally — verify in the platform's help centre before a major launch.

The Text Changer is live. 3 free edits, no card required.