© 2026 Ad Corrector LLC

Test Your Billboard Ad Design For Free

Upload your design to check clarity, contrast, and visibility in seconds.
Test Your Billboard Now

Catch Design Issues Early

Detect low contrast, cluttered layouts, and wordy messaging early.

Launch With Confidence

Review visibility, clarity, and layout to strengthen your creative.

Get Detailed Results Fast

Grade (A–F), 6 Performance Scores, Heatmap, Speed View, Top 3 Fixes.

Fix Design Issues Before They Cost You

Most outdoor ads lose attention in seconds.

Ad Corrector reveals readability issues and layout problems before you print or launch.

What You Get

Visibility and clarity tests for billboard ad designs.
  • Performance Scores

    Performance

    Check readability.
  • Attention Heatmap

    Heatmap

    See where viewers look.
  • Speed View

    Speed View

    Drive-by visibility.
  • Letter Grade Report

    Grade (A-F)

    Score in seconds.
  • Hammer and Report Symbolizing Fixes

    Top 3 Fixes

    Clear next steps.
  • Download Your Report

    Report Download

    One-page summary.
  • Heart with Pulse Line

    Emotional Impact

    See how it feels.
  • Viewer Reaction Happy Sad Faces

    Viewer Reaction

    Predict likely response.

Results Preview

See what you’ll receive after you run your outdoor ad test.
Grade and Scores
Attention Heatmap
Speed View
Run My Billboard Test
No signup required. Results delivered in seconds.
About Ad Corrector
Ad Corrector evaluates billboard and outdoor ad designs for clarity and readability by analyzing text proportion relative to the layout, contrast, and overall message visibility. Built for designers, small agencies, and marketers who need clarity before launch.
Run a Free Billboard Check
How Ad Corrector reviews your ad

A clarity checkup for real-world outdoor ad viewing

Ad Corrector focuses on how easily drivers can understand your message at driving speeds, not on campaign performance. Each test looks at clarity signals and provides practical recommendations.

✓

Clarity Score

Ad Corrector evaluates readability, contrast, and message visibility using a 0–100 scale. This shows where clarity is strong and where it may fall short.

✓

Speed View

A speed preview shows how your design reads at driving speeds and which elements stay legible or fade when viewed in motion.

✓

Improvement Guidance

Each test ends with practical suggestions to improve clarity or visibility, so you leave with directional next steps instead of a vague score.

Design View / Speed View
See how your billboard reads at driving speed. This demo shows one of several clarity checks built into Ad Corrector.
Example demo. Upload to see your design below.
Not sure how this works? Watch a short demo

How Ad Corrector Works

1
Upload your outdoor ad design
2
Review and confirm the text
3
Click Analyze Billboard
4
Results include
  • Grade
  • 6 Scores
  • Speed View
  • Attention heatmap
  • Top Fixes
  • Report
Step 1 · Technical review

Ad Corrector

Professional billboard analysis

Upload Your Billboard Design

Drag and drop or click to upload (JPG, PNG, max 10MB)

Secure & confidential - your design stays private

Design Details

Select the type of billboard for your design
Expected speed of passing traffic in miles per hour
Distance from which the billboard will be viewed
For best results: Enter copy exactly as it appears on the ad. Headline, CTA, and body are evaluated separately.
Enter the main headline text for your billboard
Enter your call-to-action text
Enter optional supporting text for your billboard

Analysis Results

Simulates how your audience sees your creative
Viewing at 65 mph from 600 ft

High Attention
Medium Attention
Low Attention
A
Excellent Design!

🔧 Top 3 Fixes

✅ What's Working

Results are guidance based on OOH visibility principles. Not a performance guarantee.

Step 2 · Emotional analysis

Persuasion Engine

– / 100

This section explains how your ad is likely to feel to someone who sees it for one to two seconds.

Emotional summary

This is an estimate of how your ad will register emotionally during a quick, real-world glance.

Persuasion score – / 100
Awaiting analysis
Top strength: – Main risk: –
Grabs attention fast
– / 10
Clear next step
– / 10
Feels made for someone
– / 10
Hard to process*
– / 10
Sticks after passing
– / 10

*Higher friction means the message takes longer to understand at speed.

Emotional impact report

If you change only one thing, start with the biggest risk listed below.

Likely viewer reaction

Once Ad Corrector finishes its review, this section will describe how the design is likely to land emotionally at a glance.

What's working

  • Strengths will show here once analysis completes.

What to fix next

  • Risks and quick fixes will show here once analysis completes.

Persuasion Engine interprets Ad Corrector results through an emotional and behavioral lens.
It does not replace live testing. It helps you choose the version most likely to register quickly and be remembered.

According to Nielsen research, creative is the largest driver of advertising effectiveness.

Built for how OOH is actually seen.

People don’t stand around studying outdoor ads. They glance. They move. They’re gone.
Ad Corrector looks at the creative file, the text, the layout, then quickly checks what comes through in real life. Your results are delivered on demand. Analyze your outdoor ad →
Something is off if reviewing one ad takes meetings, decks, or weeks to explain whether your OOH ad is readable. Ad Corrector exists because clear creative should not be complicated.

FAQs

FAQs Continued

These questions cover more technical or advanced topics.
Upload My Design
No signup required. Results delivered in seconds.
Data Tested Series

Billboard Creative, Tested

Popular creative evaluated using objective clarity metrics. Real billboards analyzed for readability, message density, and visibility at highway speeds.

Featured by AiDigital
OOH Creative Test

Absolut Billboard: Opinion vs Data

Tested on: December 4, 2025

AiDigital featured this Absolut Juice billboard. We tested readability and clarity using Ad Corrector. See how it performs at driving speeds.

Readability: 65%
Contrast: 99%
Clarity: 72%
CTA Strength: 80%
View full breakdown
OOH Reality Check

Unskippable Does Not Mean Effective

Published: December 18, 2025

OOH can’t be skipped, but it can be ignored. Why “unskippable” is not a performance guarantee, with a real transit shelter case study.

Read the analysis
Editorial case study

Billboard Design Guides

Practical guidance for outdoor ads.

Why Seconds Matter

The science of reading a billboard.
Read the Article

Why Billboards Fail

Mistakes reduce visibility & clarity.
Learn How to Fix Them

Design for the Driver

What drivers notice and remember.
See What Works


OOH Educational Articles

Clear thinking behind effective outdoor advertising.
Pre-Flight Testing in Outdoor Advertising Explained
Learn what pre-flight testing means for outdoor advertising and why evaluating creative before launch reduces risk, waste, and costly mistakes.
Why Billboard Ads That Look Fine Still Fail | OOH Creative Clarity
Many billboard ads look acceptable but fail once posted. Learn how small creative decisions affect clarity, hierarchy, and fast message understanding.
Most OOH Advertising Gets This Wrong | Creative Decisions Matter
Most outdoor ads fail before launch from flawed creative decisions. Learn what goes wrong and how to fix it before spending ad money.
What OOH Can and Cannot Do | Limits of Outdoor Advertising
Understand what out-of-home advertising does well, where it breaks down, and why realistic expectations matter before creative and media decisions are made.
OOH Creative Decisions: Opinion vs Data in Outdoor Advertising
Many OOH creative decisions rely on opinion instead of evidence. Learn why this happens and how data-driven clarity checks improve outdoor advertising outcomes.
Why OOH Creative Decisions Must Happen Before Launch
Outdoor advertising can’t be fixed after launch. Learn why OOH creative decisions must happen early and how teams avoid clarity issues before media runs.
Why OOH Advertising Works Differently Than Other Media
Out-of-home advertising is seen at speed and distance, not up close. Learn why OOH works differently than other media and how that affects creative decisions.
OOH Creative QA: The Missing Step Before Media Spend
Learn why a pre-flight OOH creative QA step helps catch clarity, hierarchy, and readability issues before media dollars are committed.
How to Test OOH Creative Before You Spend Media Dollars
Learn how to evaluate OOH creative for clarity, hierarchy, and readability before committing media budget. A clear framework for billboards and outdoor ads.
OOH Advertising Formats Explained
A clear guide to major OOH advertising formats, including billboards, transit shelters, posters, and digital displays, with creative considerations for each.
How to Evaluate OOH Creative Before Going Live
Learn how to assess OOH creative for clarity, hierarchy, and readability before launch, so media spend amplifies the message instead of exposing flaws.
OOH Doesn’t Fail. The Creative Does.
Most OOH campaigns fail before launch due to creative clarity issues. Learn how to catch common mistakes before media dollars are spent.
What Is OOH Advertising? 2026 Outdoor Advertising Guide
OOH advertising includes billboards, transit, posters, and digital screens seen outside the home. A clear 2026 guide to how outdoor advertising works.
Billboard Creative Testing vs Digital Ad Testing
Billboard creative testing is not the same as digital ad testing. Learn how outdoor ads must be evaluated for clarity, speed, and real-world viewing conditions.
OOH Ad Testing & Billboard Ad Testing Guide
Learn how OOH and billboard ad testing really works, what matters most for creative clarity, and how to test outdoor ads quickly without wasting time or budget.
Show more

Why OOH Ad Testing Matters

Outdoor billboard design has one job, to get your message seen and understood in seconds. Most designs fail because the text doesn’t hold up at distance or speed, contrast is weak, or the layout pulls the eye in the wrong direction. Ad Corrector gives you a simple way to test your billboard before it goes live so you can avoid those issues early.

Upload your design and get a clear look at readability, message clarity, visibility, contrast, color choices, and layout flow. You’ll see what stands out, what gets lost, and what needs improvement. It’s free, fast, and objective feedback that helps you build outdoor ads people actually notice.

Designers, small businesses, and media planners are able to use this tool to double-check their creative before sending files to clients, printers, or going live on digital billboards. If you want to know how your outdoor ad holds up at a glance, this gives you a practical way to test it. A few quick adjustments now can save time, money, and headaches later.

Featured On