YouTube Thumbnail Resizer

Resize for current YouTube video, Shorts and podcast thumbnail recommendations, keep the subject focal point, inspect small-card readability and timestamp pressure, optimize for mobile or desktop upload limits, and export multiple sizes in one local ZIP.

Current 4K recommendation3840×2160 video thumbnails plus the official 2160×3840 Shorts recommendation.

Small-card reality checkPreview your crop at tiny feed-card sizes, not only as a giant editing canvas.

Device-aware optimizerTarget YouTube’s stricter mobile file limit or the larger desktop allowance.

A/B-safe resolution floorIncludes 1280×720 because YouTube warns lower A/B-test thumbnails are downscaled to 480p.

1. Source image

local only

Drop or paste an imageJPEG, PNG, WebP, AVIF or GIF · max 80 MB

Choose image

SourceDemo image

Pixels—

Filegenerated

2. YouTube thumbnail format

reviewed 25 Sep 2026

3. Composition

Resize mode

Zoom 100%

Horizontal focus 50%

Vertical focus 50%

Rotation

Background

Flip horizontal Flip vertical

Show conservative text-safe guide Show timestamp / badge pressure zone

4. Export

Direct-upload format

JPEG quality 92%

Upload target

Preview duration

Transparent PNG background Auto-target YouTube upload file limit

Base filename

Engine diagnostics · running…

Decoding, cropping, compression and ZIP creation run locally. Canvas re-encoding removes source EXIF/GPS metadata from exported files.

Video thumbnail · 4K recommended

3840 × 2160 · 16:9 · current YouTube recommendation

Drag image to reposition · guides are preview-only

Output3840 × 2160

Aspect ratio16:9

Current target limit2 MB

Quality check—

1 YouTube output selectedSelect several sizes on the left to build a multi-resolution or multi-surface ZIP with the same focal point.