Shared Album Size Limits, Compared and Sourced

Every Published Ceiling in One Table

Each cell below was read from the vendor's own documentation or pricing page, or from Viallo's own code, on 3 September 2026. Where a vendor does not publish a figure the cell says so. None of these numbers are estimates, and none come from a third party quoting the vendor.

Read from vendor documentation on 3 September 2026. Google publishes one adjacent figure, a 20,000 item limit on Conversations, which is not an album limit.

Apple Publishes; Google Does Not

Apple maintains a dedicated limits page for Shared Albums and it goes well past the five columns above: 200 invites a day, 1,000 items per contributor per hour, 10,000 per contributor per day across all shared albums, 200 comments per item, 1,024 characters per comment. That is the documentation of a company that expects to be held to a number.

Google Photos publishes no per-album item limit, no albums-per-account limit, no people-per-album limit and no per-file size limit. The figure that circulates for Google Photos albums appears in community forum threads rather than in Google's own help centre, which is exactly the kind of number worth not repeating. The one hard limit Google does publish in this area belongs to a different feature: 20,000 items in Conversations.

This asymmetry has a practical consequence. A published limit is a limit you can plan against; an unpublished one is a limit you discover at the worst moment, and support will tell you about it afterwards. If you are about to move 8,000 photos into something, the vendor that wrote the number down is the safer bet even when its number is lower.

The Three Ceilings That Actually Bite

People per album

The most commonly hit and the least expected. Apple's 100 subscribers sounds generous until you try to use a Shared Album for a school year group, and six people is the real headline: an iCloud Shared Photo Library holds the creator plus five, and Apple states you can only join one. Dropbox is at the other end with 1,000 members in a shared folder and 250 in a restricted one. The event apps mostly do not cap guests at all, because their revenue comes from upload volume instead.

The per-file cap, and which client you use

Only two services here publish one, and Dropbox's is the interesting case because it is not a single number. Individual files must be under 2 TB through the desktop and mobile apps, under 50 GB through the web interface, and under 350 GB through the API. Same account, same folder, three different ceilings depending on how the file arrives, which is a genuinely surprising thing to discover mid-upload.

Viallo publishes 500 MB per file, which is well past any photograph including large raw files, and irrelevant for video because Viallo does not accept video at all. That last point belongs in a limits table rather than a footnote: a service that takes no video has an effective video limit of zero, and no amount of paying changes it.

Photos per album, when it exists

Apple's 5,000 is the only published per-album ceiling for a general-purpose product, and the wording matters: it counts photos and videos together, from every contributor, not per person. Twelve relatives adding 400 items each is 4,800 and you are nearly done.

Everywhere else the constraint is scoped differently. Viallo counts photos against the account rather than the album, so the free tier's 200 is 200 across both albums, and a guest upload through a contribute link spends the owner's allowance. On the event apps the free upload cap is what stops you first, at 50, 50 and 100. Moving several hundred photos at once is the practical version of this problem.

Where "Unlimited" Appears, and What It Never Covers

Four of the nine services use the word, and it is worth noticing which metric it attaches to every time.

• Kululu Pro: unlimited uploads, with the gallery kept for a year.
• EventPixel paid tiers: unlimited guest uploads, and unlimited co-hosts at the top tier.
• GUESTPIX: unlimited guests on every tier, under a fair-use note of 1,000 per event.
• Viallo Pro: no album cap and no photo cap.

In none of those four cases does the word attach to storage. Kululu and EventPixel meter time instead, so unlimited uploads arrive with a retention window. GUESTPIX gives away the guest count because guests are not the cost. And Viallo Pro removes the album and photo counts while keeping a storage figure of 1 TB, which means the real ceiling on Pro is bytes rather than either of the numbers the tier advertises as uncapped.

Reading a plan this way is quick and reliable: find the metric that is unlimited, then find the metric that is not, because the second one is the actual limit. Vendors are consistent about which is which, since they are all paying the same storage bills.

How to Pin Down a Limit the Vendor Has Not Published

Half this table came from help-centre pages that no marketing page links to, so the search is usually the hard part rather than the reading.

Search the help centre for the words limits, maximum and quota rather than for the feature name. Apple's numbers live on a page called "iCloud Shared Albums limits" that the Photos app never mentions, and Dropbox's member ceilings live under an article about large deployments rather than under sharing.

If nothing turns up, assume the constraint is storage and work backwards from the plan's gigabytes. Then test with a real batch before you commit: upload a few hundred items and watch for the point at which the interface changes its tone, because a service that is going to refuse you usually starts hinting well before it does.

One number no vendor publishes at all is what happens to resolution on the way in, which on Apple's Shared Albums is a harder ceiling than any of the counts above. Which services keep the original file covers that side, and how iCloud Shared Albums behave outside Apple is worth reading before you rely on the 5,000.

Frequently Asked Questions