> Quick answer: Use 1080×1920px at a 9:16 aspect ratio. That is the optimal resolution for TikTok In-Feed Ads. Minimum accepted is 540×960px. Keep key visuals centered and away from the edges to avoid UI overlap.
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The Best Size for TikTok Ads
Use vertical. Every time. TikTok is a full-screen, phone-native platform and the right dimensions stop your ad from looking out of place.
Vertical (9:16 aspect ratio) is the recommended format
Per TikTok Ads Manager documentation, 9:16 is the recommended aspect ratio for In-Feed Ads. It fills the screen. It looks like native content. The TikTok feed is designed for vertical video, and ads that match that format blend in rather than interrupt.
Minimum dimensions: 540×960px. Optimal: 1080×1920px.
540×960px is the minimum TikTok accepts for vertical creatives. Go with 1080×1920px whenever possible. Higher resolution looks sharper on modern screens. It also gives you more flexibility to crop or reframe if you adapt the creative for other placements later.
Best practices for safe zones and text placement
TikTok overlays UI elements directly on your ad. The profile icon, caption area, and action buttons appear in the lower portion of the screen. The brand name and "Ad" label appear at the top.
Keep important visuals and text centered in the frame. Avoid placing anything critical near the edges or corners. TikTok's guidelines recommend keeping key elements away from the top and bottom of the frame so UI elements do not cover them.
Ad captions display in white, uniform font. Maximum 4 lines including emojis. Captions do not support clickable links, @ symbols, or hashtags.
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TikTok Ad Format Specs: Dimensions for Every Placement
TikTok supports three aspect ratios for In-Feed Ads. Each serves a different use case.
In-Feed Ads: vertical, horizontal, and square
Per TikTok's Ads Manager documentation, the supported formats and minimum dimensions are:
| Format | Aspect Ratio | Minimum Dimensions |
|---|---|---|
| Vertical | 9:16 | 540×960px |
| Horizontal | 16:9 | 960×540px |
| Square | 1:1 | 640×640px |
Vertical wins for full-screen immersion. Horizontal works for repurposed video from other platforms. Square suits cross-platform campaigns where one creative runs across multiple channels.
Carousel Ads: up to 35 images
Carousel Ads support 2 to 35 images per carousel. TikTok recommends 2 to 10 images for best engagement. Each image must be JPG or PNG format. Maximum file size is 100 KB per image. Suggested horizontal resolution is 1200×628px.
Video vs. image specifications
Video and image ads follow different rules. Know which one you are building before you export.
File size, bitrate, and format requirements
For video ads, accepted formats are .mp4, .mov, .mpeg, .3gp, and .avi. Maximum file size is 500 MB. Minimum bitrate is 516 kbps. Non-Spark Ads support up to 10 minutes of video. Spark Ads have no duration restriction.
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How to Resize and Optimize Your TikTok Ad Creatives
Wrong dimensions get your ad cropped, rejected, or ignored. Getting the ratio right before launch saves time and budget.
Why aspect ratio matters on the TikTok Feed
A horizontal ad in a vertical feed looks like an error. Users scroll past it instantly. TikTok's feed prioritizes content that matches the native experience. Start with vertical. Adapt other formats from there.
Using Coinis Revise to Smart Resize for TikTok specs
Coinis Revise includes Smart Resize. Upload your existing creative. Select the 9:16 target ratio. The AI repositions key elements and fills gaps automatically. No manual cropping. No distorted visuals.
You can resize a single creative into multiple formats at once. Test 9:16 against 1:1 without rebuilding from scratch. It takes seconds, not hours.
Testing formats before launching
Run vertical and square variants in parallel. Check which ratio drives more engagement in your category. TikTok audiences vary by niche. What performs for e-commerce may not work for B2B software.
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Create TikTok-Ready Visuals in Seconds
Generate campaign-ready verticals with Image Ads
Coinis Image Ads turns a product URL into a full-frame vertical creative. The AI handles layout, copy, and visuals built for mobile. No design file required.
Resize existing creatives with Coinis Revise
Already running ads on Meta or other channels? Use Smart Resize to adapt them to TikTok's 9:16 spec in seconds. Clean up distractions with AI Erase. Sharpen low-res assets with AI Upscale. All in one tool.
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Or skip the steps.
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Frequently Asked Questions
What is the recommended size for TikTok ads?
TikTok recommends 1080×1920px at a 9:16 aspect ratio for In-Feed Ads. The minimum accepted resolution is 540×960px, but 1080×1920px delivers the sharpest results on modern screens.
Can I run horizontal ads on TikTok?
Yes. TikTok In-Feed Ads support horizontal (16:9, minimum 960×540px) and square (1:1, minimum 640×640px) formats alongside vertical. Vertical performs best because it fills the full screen and matches native content.
What video file formats does TikTok accept for ads?
TikTok accepts .mp4, .mov, .mpeg, .3gp, and .avi video files. Maximum file size is 500 MB with a minimum bitrate of 516 kbps.
How many images can a TikTok Carousel Ad contain?
TikTok Carousel Ads support 2 to 35 images. TikTok recommends 2 to 10 images for best engagement. Each image must be JPG or PNG with a maximum file size of 100 KB per image.