TikTok and Reels: Ideal Dimensions and Formats in 2026

Updated March 2026 · 5 min read

Short-form vertical video dominates social media in 2026. Whether you create on TikTok or Instagram Reels, having the right image dimensions for covers and thumbnails makes a measurable difference in click-through rates and overall presentation quality.

This guide covers the exact specs you need, the best formats to use, and how to get there without quality loss.

TikTok Image Specs 2026

Element	Resolution	Aspect Ratio	Format
Profile Photo	200 × 200 px (min)	1:1	JPEG / PNG
Video Cover Photo	1080 × 1920 px	9:16	JPEG
Feed Thumbnail	1080 × 1080 px (square) or 1080 × 1920 (vertical)	1:1 or 9:16	JPEG
In-Feed Ad Image	1080 × 1920 px	9:16	JPEG / PNG

Instagram Reels Image Specs 2026

Element	Resolution	Aspect Ratio	Notes
Reel Cover (in-feed)	1080 × 1920 px	9:16	Cropped to 1:1 in grid
Reel Cover (profile grid)	1080 × 1080 px	1:1	Center-safe zone
Reel Thumbnail	1080 × 1920 px	9:16	First frame used by default

Important: For Reels cover photos, keep all key visual elements within the center 1080×1080 px of your 9:16 image. The profile grid crops to a square, and anything outside the center zone will be cut off.

Best File Format for TikTok and Reels Covers

Use JPEG for both platforms. Here is why:

JPEG is universally accepted and processed consistently across both iOS and Android apps
WebP support in social media apps is improving but still inconsistent for direct uploads
PNG is unnecessarily large for photographic covers — only use it for graphics with flat colors or transparency

Aim for a final file size between 200 KB and 500 KB. Larger files will be re-compressed by the platform with unpredictable results.

Why Resolution Matters More Than File Size

Both TikTok and Instagram display video covers on high-density (Retina) screens. If your cover image is only 540×960 px, it will appear soft and blurry on modern smartphones even if the file size is large. Always use 1080×1920 px as the minimum for vertical covers.

Aspect Ratio Cheat Sheet

9:16 — Full-screen vertical (1080×1920). Standard for TikTok and Reels in-feed.
1:1 — Square (1080×1080). Used for Reels profile grid and TikTok feed.
4:5 — Slightly vertical (1080×1350). Available on Reels but not recommended for covers.

How to Resize and Compress with SocialShrink

Open SocialShrink in your browser
Upload your image (supports JPEG, PNG, WebP, AVIF)
Select the TikTok or Reels preset — it sets 1080×1920 automatically
Choose JPEG output, quality 85%
Click Compress and download — done in seconds

No upload to any server. Everything stays in your browser.

Resize for TikTok & Reels in Seconds

Free presets for every platform. Processed entirely in your browser — private by design.

Try SocialShrink Free →