Ad system
display.io
display.io is the domain an ad system uses in app-ads.txt and ads.txt files. 96,352 apps in our data declare it. Its sellers.json lists 244 sellers.
- Apps declaring it
- 96,352
- Sellers in sellers.json
- 244
- Lines verified
- 36%
- Lines with errors
- 5,653
- Avg. supply path score
- 50.8 / 100
11,559 DIRECT · 95,952 RESELLER
0% confidential
18,807 of 51,738 checked lines
51,738 lines in total
91,066 apps scored
Apps and lines are recounted every 10 minutes. The sellers.json breakdown and the directory ranking are as of , recomputed daily. sellers.json last read 10 October 2026. The supply path score sums up how short and clean the declared paths are, 0 to 100 (how it is computed).
How to add display.io to app-ads.txt
One line per account, in the app-ads.txt at the root of the domain your App Store and Google Play listings name as the developer website.
display.io, YOUR_ACCOUNT_ID, DIRECT
display.io, YOUR_ACCOUNT_ID, RESELLER- Field 1:
display.io, the domain display.io uses in app-ads.txt. - Field 2: your account ID with display.io. It must equal the
seller_idin display.io's sellers.json. - Field 3: DIRECT if you hold the account, RESELLER if a partner holds it and sells your inventory. DIRECT vs RESELLER
- Field 4 (optional): a certification authority ID. Most lines naming display.io carry none, or different ones, so we do not suggest one.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 244
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 0
- Last read
- Oct 10, 2026
- PUBLISHER203
- INTERMEDIARY22
- BOTH19
Cross-check of lines naming display.io
- Verified 18,807
- Seller ID not found 125
- DIRECT but intermediary 170
- RESELLER but publisher 5,358
- Seller type BOTH 27,278
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming display.io is looked up in its sellers.json. What each status means
Common errors with display.io lines
-
Seller type BOTH
27,278 lines
The account is listed as BOTH, so sellers.json alone cannot tell a buyer which relationship applies. Nothing to fix on your side; buyers usually look at the seller's domain.
-
RESELLER but publisher
5,358 lines
If the account is yours, declare it DIRECT. If a partner holds it, ask display.io why the account is listed as PUBLISHER.
-
DIRECT but intermediary
170 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask display.io to list it as PUBLISHER.
-
Seller ID not found
125 lines
Ask display.io for the account ID it lists for you in its sellers.json, correct the line, or remove it if you no longer work with them. Buyers that check sellers.json drop these paths.
Intermediaries most declared as RESELLER
Accounts on display.io that its sellers.json lists as INTERMEDIARY or BOTH, by the number of app-ads.txt files declaring them. Confidential sellers are left out.
| Seller domain | Type | Files |
|---|---|---|
| opera.com | BOTH | 6,325 |
| toponad.com | BOTH | 5,944 |
| bidease.com | INTERMEDIARY | 5,830 |
| yandex.com | BOTH | 5,392 |
| pubeasy.io | INTERMEDIARY | 3,566 |
| bidnex.com | BOTH | 2,050 |
| bidmachine.io | BOTH | 2,023 |
| vungle.com | BOTH | 1,696 |
Apps that declare display.io
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live |
Questions about display.io
How do I add display.io to app-ads.txt?
Add one line for each account display.io gives you: "display.io, YOUR_ACCOUNT_ID, DIRECT". Use DIRECT when you hold the account yourself and RESELLER when a partner holds it and sells your inventory through display.io. The account ID must be the seller_id display.io lists for you in its sellers.json; display.io will give it to you. Put the file at the root of the domain named as your developer website in the App Store and Google Play listings.
Does display.io publish a sellers.json?
Yes. Its file at https://www.display.io/sellers.json listed 244 sellers when we last read it on 10 October 2026: 203 publishers, 22 intermediaries and 19 listed as both; 0% are confidential.
How many apps declare display.io in app-ads.txt?
96,352 apps in Stoqlab's data (delisted apps included) declare display.io: 11,559 with at least one DIRECT line and 95,952 with at least one RESELLER line, across 13,159 app-ads.txt files. Counts are recomputed daily.
Why do display.io lines fail verification?
Of 51,738 lines naming display.io, 5,653 contradict its sellers.json. The most common case is "RESELLER but publisher" (5,358 lines): If the account is yours, declare it DIRECT. If a partner holds it, ask display.io why the account is listed as PUBLISHER.
What is the difference between DIRECT and RESELLER?
DIRECT means the publisher owns the account; RESELLER means an intermediary sells the inventory on the publisher's behalf. DIRECT lines should match a PUBLISHER entry in the network's sellers.json, RESELLER lines an INTERMEDIARY entry.
Sources: the public app-ads.txt files of tracked apps and the sellers.json of display.io. Something wrong? Tell us.