Creative specs
Required fields, file types, sizes and character limits for every UluMob ad format, checked when you save a campaign.
Every ad in a campaign has a destination URL. What else it needs depends on the campaign format. The rules below are checked when you save the campaign, and the save fails with a message on the field that does not fit.
What each format needs
| Format | Required | Optional |
|---|---|---|
| Popunder | Destination URL | None |
| Domain redirect | Destination URL | None |
| Push | Title (up to 30 characters), icon | Image, description, brand name |
| In-page push | Title (up to 30 characters), icon | Image, description, brand name |
| Native | Title (up to 60 characters), image | Description, brand name |
| Banner | Banner size, image of exactly that size | Title, brand name |
| Interstitial | Image | Title (up to 60 characters), description, brand name |
| In-stream video | VAST tag URL over HTTPS | None |
| Telegram Mini Apps | Title (up to 40 characters) | Image, description, brand name |
Text limits that apply to every format:
- Description: up to 45 characters.
- Brand name: up to 40 characters.
- Ad name (internal, never shown): up to 120 characters.
Each format page under /ad-formats also lists the image shapes that tend to display best, for example /ad-formats/native and /ad-formats/interstitial.
File rules
Images and icons come from the media library. The library accepts three kinds of file:
| Kind | File types | Maximum size | Dimensions |
|---|---|---|---|
| Image | JPG, PNG, GIF, WebP | 1024 KB | From 100 x 50 up to 4000 x 4000 pixels |
| Icon | JPG, PNG, WebP | 300 KB | Square, at least 192 x 192 pixels |
| Video | MP4 | 20 MB | Not checked |
An ad can only use creatives from your own library. A creative you deleted can no longer be picked.
Banners
A banner zone has a fixed size, so a banner ad must match it exactly. The available sizes are:
- 300 x 250
- 728 x 90
- 320 x 50
- 160 x 600
Pick the size on the ad, then pick an image with exactly those pixel dimensions. Banner images are limited to 150 KB, which is stricter than the general 1024 KB image limit. An image of 301 x 250, or one of 160 KB, is refused when you save.
To cover several sizes, add one ad per size to the same campaign. A campaign can hold up to 50 ads.
Video
Video campaigns do not serve an uploaded file directly. Each video ad points to a VAST tag URL, and that URL must use HTTPS. The player on the publisher page loads your VAST tag through the UluMob wrapper, which adds the impression tracking.
Destination URLs and tracking
- Destination URLs must start with
http://orhttps://. You can include macros such as{click_id}or{zone_id}; they are filled in when the visitor clicks. - An optional impression tracking URL can be set per ad. It must use HTTPS.
- Destination and VAST URLs are limited to 2048 characters.
Review
New ads and edited ads go back to moderation before they serve. Keep the creative consistent with the landing page and with the advertising policy. If a campaign needs changes, you receive an email with the reason; fix it and save the campaign, and it goes back to review on its own.
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