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We found 3 issueson opper.aiworth fixing.

Probie inspected opper.ai the way a new customer would. 1 page, desktop and phone, 3 minutes. Oct 9, 2026.

1 page visited61 controls found22 clicked
opper.ai's report cardOct 9, 2026

Home page is missing a cross-origin resource header.

0 serious3 minor
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the scores · out of 100
97VisualPhone visitors scroll past a blank gap on the home page
97AccessibilityLow vision readers miss model provider details
100Buttons and linksNo verified problems with the controls and links checked.
97Under the hoodHome page is missing a cross-origin resource header
100MobileNo verified mobile problems in the scanned pages.
How the composite score works

The overall score is a weighted average: Visual 18.75%, Accessibility 25%, Buttons and links 31.25%, Under the hood 12.5%, and Mobile 12.5%. Unassessed categories are excluded and the remaining weights are normalized.

Product categories start at 100. Each distinct verified finding deducts 30 points for a serious issue, including a reproduced flow defect or material pricing contradiction, or 18 for critical, 12 for high, 7 for medium, and 3 for low stored detector severity. Scores stop at zero and round to whole numbers. All verified findings count, including those beyond the displayed list. The formula is fixed and versioned, so the same saved evidence always receives the same score.

the issues
Minorhome page

Home page is missing a cross-origin resource header

The response from https://opper.ai/ is missing Cross-Origin-Resource-Policy.

opper.ai
Captured during the scan: Home page is missing a cross-origin resource header
from the scan · / · desktopopen full capture ↗

Try it: Run curl -I https://opper.ai/ and check the response headers for Cross-Origin-Resource-Policy.

Minorhome page

Hard-to-read text gets in the way of a customer's decision

Visitors comparing model cards on the home page rely on the provider line to see where each model runs, and the "+3 more" style counts that complete it are hard to read for anyone with reduced vision. Those counters on the Claude Opus 5.5, GPT-6 Sol and Gemini 3.8 Flash cards render at 12px in #ababab on white, a contrast ratio of 2.29:1 against the 4.5:1 required by WCAG 2 AA. The information about additional hosting regions is effectively lost for part of the audience.

opper.ai
Captured during the scan: Low vision readers miss model provider details
from the scan · / · desktopopen full capture ↗

Try it: Open the home page, look at the model cards under the hero, and check the "+3 more" text next to the provider line against a contrast checker.

Minorhome page · phone

A broken layout undermines confidence in your product

Phone visitors reading the home page hit a tall stretch of empty white between the customer logo row and the "Apps" section, which makes the page feel unfinished and invites them to stop scrolling before the product story continues. The gap is roughly 445 pixels of blank viewport at the mobile home page, sitting directly under the evroc and getTest logos and above the "Apps" pill. It appears the same way on repeat loads, so it is part of the layout rather than a loading hiccup.

opper.ai
Captured during the scan: Phone visitors scroll past a blank gap on the home page
from the scan · / · mobileopen full capture ↗

Try it: Open the home page on a phone and scroll to the customer logo strip, then watch the blank space between those logos and the "Apps" section.

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PRFix: Home page is missing a cross-origin resource header
probie/fix-1+12−4checks passing

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