Tutorials
Mobile Ad Text Readability: Check the Finished Image at Feed Size
Use an original scaling calculation, a three-pass phone-size review and a targeted revision prompt to improve text within a complete four-panel ad image.
Make mobile ad text readable by judging the finished image at its actual display size, simplifying the message and giving important words enough contrast and space. Correctly generated letters can still be too small to read after an entire four-panel ad is reduced to a phone screen. Solve the visual hierarchy before exporting a larger file.
Adobe's graphic-design guidance recommends checking contrast, simplifying busy backgrounds and reviewing designs on mobile. The procedure below turns those checks into a practical review for a complete advertising image with its text already integrated.
Calculate the reduction you are asking the text to survive
Consider a hypothetical 1200 px-wide ad displayed 360 CSS pixels wide. Its linear display scale is 360 divided by 1200, or 0.3. A text element that occupies 60 source pixels of height would occupy about 18 displayed pixels under that simple scaling assumption.
That is a size illustration, not a universal readability threshold. Letter shape, weight, language, background and the destination's rendering all matter. A four-panel layout also gives each panel only part of the total width.
| Source element height | Display scale in this example | Approximate displayed height |
|---|---|---|
| 40 px | 0.3 | 12 px |
| 60 px | 0.3 | 18 px |
| 80 px | 0.3 | 24 px |
The purpose of the calculation is to explain why a beautiful full-screen preview can fail in the feed. Do not use it to claim that one source font size works for every ad placement.
Decide which words need the most attention
For a fictional silver ring campaign, suppose the supplied copy is a product name, “Brushed silver finish,” and “Explore the collection.” Those lines have different jobs. The headline attracts attention, the material wording explains the product and the invitation tells the viewer what to do next.
If every panel repeats all three, the layout spends its limited space restating the same information. Let the detail panel show the finish, and reserve the clearest closing invitation for the last panel. Keep any essential qualification legible wherever it is needed; do not hide it to simplify the design.
Test whether a shorter sentence preserves the meaning. “A considered essential for the small rituals of your everyday life” may occupy several lines without explaining the ring. Use the actual supported product distinction instead of shrinking a vague paragraph.
Review in three passes
First view the whole ad without zooming. Identify the product, the primary message and the reading order. If one panel contains all the visual weight, ask whether that emphasis is intentional or simply caused by a larger dark block.
Second, read every important line at the expected display size. Watch for thin letters against detailed imagery, light text crossing a reflection and text squeezed along a panel boundary. A subtle outline does not necessarily repair a fundamentally crowded composition.
Third, inspect the destination's preview. Its crop and interface can change what is visible. Check the actual placement rather than treating a generic phone mockup as proof that the ad will fit everywhere.
Use a real phone when possible. A large desktop monitor viewed close up can make a scaled preview easier to read than it will be during ordinary use.
Ask for a targeted image revision
The text can remain inside the generated image throughout the revision. For example:
Keep the silver ring, four-panel sequence and exact supplied product wording.
The closing invitation is too small at phone viewing size.
Increase its visual size and give it a quiet dark area with clear contrast.
Remove the decorative secondary sentence from that panel.
Keep the ring prominent and avoid covering the brushed-finish detail.
Retain the headline and CTA as part of the complete image.After the revision, repeat the small-size review. Check that a larger closing line has not crowded the product or changed the wording. If the problem moved to another panel, refine that relationship instead of assuming the first fix finished the job.
Keep reading support with the delivered image
An image can be legible and still need an accessible text equivalent on the page where it appears. Add the essential message to the available caption or image-description field as appropriate. See the product-image alt-text examples for a four-panel description approach.
Create and refine the complete creative in Panelly Studio, then check the downloaded result in its actual destination. This is a visual review you perform on the output, not a claim that Panelly measures a universal readability score or validates every advertising platform.
FAQ
Will a higher-resolution export fix tiny copy?
It can improve detail quality, but it does not make the text larger relative to the whole image. If the image occupies the same screen width, the composition still needs to allocate enough space to the words.
Is sans-serif always required?
No. Judge the actual typeface, weight, size and background. A readable serif can fit a brand; a thin or compressed sans-serif can still be difficult to read.
Does this mean separating text into editable layers?
No. Request the corrected wording and hierarchy in the complete image. Separate layers are a workflow choice, not a prerequisite for this review.
