TikTok slideshow format: size, limits, and specs

A TikTok slideshow is a photo post. You tap Add post +, tap Photo, tap Upload, and select up to 35 images, which TikTok's Help Center states as the ceiling. The order you select them is the order they publish in. You get one sound per post, which TikTok also documents. Viewers control the pace by swiping rather than watching a timed clip. What TikTok does not publish anywhere fetchable is a file size or resolution rule for organic photo posts, so any page quoting exact megabytes for a slideshow invented them. The table below gives every documented number with the page it came from, then the structure that works for a product post.

For build workflows once the specs are settled, see the best TikTok slideshow makers for small businesses and the TikTok slideshow template.

TikTok slideshow specs at a glance

Every row here comes from a TikTok page fetched on 7 September 2026. Rows marked as ad specs are from TikTok Ads Manager and apply to paid Carousel Ads, not to an organic post. They are the closest official image numbers that exist, which is why they are included and labelled.

Two rows are worth stopping on.

The "not published" rows are the honest answer to the most common question on this topic. TikTok has no organic photo spec page. Export at the same vertical shape as everything else on the feed and you are safe; there is no number to hit because TikTok never set one.

The Carousel Ads suggestion of 100 KB or less is a paid ad guideline, not a limit on your camera roll. Do not compress an organic slideshow down to 100 KB because you read that number somewhere. It exists so ads load fast in an auction placement.

What photo mode is, and how swiping changes pacing

TikTok's Help Center treats a photo post as its own post type, alongside video and text. The Newsroom tutorial that introduced the format describes it as building a photo slideshow from the upload screen, with the images "played in slideshow format in the same order that they were selected".

The difference that matters for a business account is who controls time.

In a video, you set the duration of every frame. In a slideshow, the viewer sets it by swiping. A slide with a dense paragraph gets skipped by a fast swiper and studied by a slow one, and you cannot force either. That is why slideshows suit comparisons, step lists and before and after content: the reader can pause on the frame they care about.

It also means a slide that needs three seconds of reading to make sense is a design fault, not a viewer fault. One idea per slide is the rule the format enforces on you.

Image count, order, and how selection sets publish order

The ceiling is 35 photos, and TikTok's editing FAQ applies the same 35 to items in a single editing session.

There is no documented minimum. Nothing in TikTok's Help Center says a photo post needs four images, or six, or any number. If you see a minimum quoted elsewhere, it has no official source behind it.

Order is the part people lose time to. TikTok's Newsroom tutorial states that after you select photos and tap Next, the images play in the same order that they were selected. Tapping images in the wrong sequence in your camera roll is the single most common way a slideshow ships scrambled.

Two habits fix it:

1. Rename or reorder the files on your device before you open TikTok, so the grid shows them in story order.
2. Tap them one at a time in story order rather than sweeping across the grid.

If the order still comes out wrong, TikTok documents rearranging inside the editor: tap a clip or tap Edit at the bottom, then press and hold a clip and drag it to change its place in the track.

File type, resolution, and size

This is the section other pages fill with confident numbers. Here is what is actually documented.

TikTok publishes no file type, resolution or file size requirement for photos in an organic post. There is no Help Center page for it. The upload flow accepts what is in your camera roll.

The nearest official figures come from TikTok Ads Manager, whose Carousel Ads specification page was last updated in September 2026. It asks for JPG, JPEG or PNG, suggests a file size of 100 KB or less, and gives a vertical resolution of 720 x 1280 pixels. Its in-feed video specification asks for vertical 9:16 creative at 540 x 960 pixels or larger. Before you upload, you can check a photo against the slideshow frame.

The practical takeaway for an organic slideshow:

• Shoot and export vertical. The feed is vertical and a horizontal photo gets letterboxed.
• Export well above 720 x 1280. There is no upside to sending TikTok a small file for an organic post, and the ad minimums are minimums, not targets.
• Use JPEG or PNG. Both are accepted on the ad side and are what a phone produces anyway.
• Ignore the 100 KB suggestion unless you are actually building a Carousel Ad.

If your images are coming out soft or cropped after upload, that is a framing and compression problem rather than a spec problem, and it has its own guide: fixing cropped, blurry and misordered slideshow images.

Sound: one track per post

TikTok's editing FAQ is short and absolute here: "You can add one sound to your post."

That has consequences the spec sheets never spell out. You cannot fade between two tracks inside the app. You cannot run music underneath a voiceover, because TikTok states that once the music is changed, all previous background music and voices are replaced. Pick the track or pick the narration.

You can trim. Select the sound, tap the Trim button next to it, drag the slider to set the starting point, then tap the Confirm button. Use that to put the strongest part of the track at slide one, because a fast swiper may never reach the rest of it.

Business accounts have one more constraint. TikTok states that a Business Account cannot use music that is not licensed for commercial use, and recommends the Commercial Music Library for anything promoting a brand, product or service. The full path is in how to add your own sound to a TikTok slideshow.

The three-slide structure for a product post

Specs decide whether the post works. Structure decides whether it sells. For a product account the shortest sequence that does a job is three slides.

Slide one: the problem, named. Not a brand line. A sentence your buyer would say out loud. "This shade goes orange in daylight." The photo shows the problem, not the product.

Slide two: the proof. The result, the before and after, the process shot, the customer photo. This is the slide that earns the swipe to the third.

Slide three: one ask. One. Save this, or see it in the shop, or comment your case. Stacking three asks on a final slide is the most reliable way to get none of them.

Everything longer than three slides is this pattern with more proof in the middle. Twelve slides of proof and one ask still works. Twelve slides of proof and four asks does not.

Text follows the same discipline: one line per slide, readable in about the time a thumb takes to move. The controls for that are in how to add text to a TikTok slideshow.

What breaks a slideshow

Four failures account for most of it, and three are avoidable before you open the app.

Wrong order. Selection order is publish order. Fix the order in your camera roll first, or reorder in the editor by pressing and holding a clip.

Horizontal source photos. The feed is vertical. A landscape product shot loses its sides or sits in a band. Reshoot vertical, or crop deliberately rather than letting the upload decide.

Text at the bottom edge. Your username and caption sit there, and a long caption pushes them further up. TikTok's own ad specifications say: "Do not place any text, logos, or key messages on areas where buttons, usernames, and captions may appear in the in-feed section." Its in-feed specification adds that the safe zone "is determined by the dimension (vertical, horizontal, or square), ad caption length, and any additional formats used", with no fixed values published on any fetchable page. A shorter caption is a real lever on how much room your text has.

A cover chosen by default. The cover is set on the post screen with Edit cover, and it does not have to be slide one. Most weak covers are simply whichever image happened to be first. The full flow is in how to change the cover on a TikTok slideshow.

Once the specs are settled, the work that remains is producing 35 usable frames a week, in order, with the text already on them. That is the part CineRads does from your product photos and brand assets, so what you open TikTok to do is select, sound, cover, post.

Frequently Asked Questions

How many photos can a TikTok slideshow have?

Up to 35 in one post. TikTok's editing FAQ applies the same 35 to items in a single editing session. There is no documented minimum.

What size should TikTok slideshow photos be?

TikTok publishes no resolution requirement for organic photo posts. Export vertical. The nearest official number is the Ads Manager Carousel Ads vertical resolution of 720 x 1280 pixels, which is a minimum for paid ads rather than a target for organic posts.

What file types does a TikTok slideshow accept?

TikTok documents no file type rule for organic photo posts. Its Carousel Ads specification accepts JPG, JPEG and PNG, which covers what a phone camera produces.

Is there a file size limit for TikTok slideshow photos?

Not one TikTok publishes for organic posts. The 100 KB figure that circulates is a suggestion from the Carousel Ads specification and applies to paid ads.

How does TikTok decide the slide order?

The order you select the photos is the order they publish in, per TikTok's own photo tutorial. You can rearrange afterwards by pressing and holding a clip in the editor and dragging it.

Can a TikTok slideshow have more than one sound?

No. TikTok states you can add one sound to a post, and that changing the music replaces previous background music and voices.

How long is a TikTok slideshow?

There is no fixed duration, because viewers swipe at their own pace rather than watching a timed clip. Slide count is the lever you control, not runtime.

Where do I set the cover of a slideshow?

On the post screen, the last screen before you publish. Tap Edit cover, swipe to the image you want, drag the frame, then tap Save.

Sources

• TikTok Help Center: Making a post (photo post steps, 35 photo limit, Edit cover on the post screen)
• TikTok Help Center: Editing TikTok videos and photos (35 items per editing session, one sound per post, reordering clips)
• TikTok Help Center: Sounds (trim steps, replacement of previous audio, business account commercial music limit)
• TikTok Newsroom: Photos on TikTok, published 3 September 2020 (selection order is publish order)
• TikTok Ads Manager: Specifications for Carousel Ads, last updated September 2026 (2 to 35 images, JPG, JPEG or PNG, 100 KB or less suggested, vertical 720 x 1280 px)
• TikTok Ads Manager: TikTok Auction In-Feed Ads, last updated June 2026 (vertical 9:16 at 540 x 960 px or larger, safe zone determined by dimension, caption length and additional formats)
• TikTok Ads Manager: TopView ad specifications (do not place text, logos or key messages where buttons, usernames and captions appear)