Frequently Asked Questions
Find clear answers about the six Display Lab tools, local processing and exports, PRO access, payments, restoration, privacy, and support.
What does “Lifetime” or Founding PRO Access mean?
Access is guaranteed for at least 364 consecutive days beginning August 8, 2026 at 11:00 Europe/Bucharest time (through August 7, 2027 at 11:00 Europe/Bucharest time), and may continue afterward for as long as Display Lab remains operational. This is not a perpetual service guarantee. The displayed start date is controlled from the Display Lab administration settings, and the end is calculated automatically at 364 consecutive days. A later administrative change applies to future purchases and does not reduce the contractual rights attached to an earlier purchase. The applicable dates and Terms are shown before payment and accepted again during Stripe Checkout. See the Pricing page and Terms of Service for the complete offer.
I cleared my browser. Did I lose PRO?
Clearing browser storage removes the entitlement saved on that device, not the purchase record. Open Restore PRO Access and enter the email used during checkout or your saved API key. Existing PRO restoration remains available when new payments are paused.
Can I use PRO on another device?
Yes. Visit the restoration page on the other device and restore with the checkout email or API key. After a successful match, Display Lab saves the PRO key locally on that browser. Keep the key private and do not publish or share it with unrelated users.
Why are payments paused?
The administrator may temporarily disable new purchases during testing, maintenance, or commercial review. When payments are paused, Pricing and PRO prompts clearly display Testing Mode or Pro Coming Soon and the checkout API refuses new sessions. Free tools and the restoration of previously purchased access remain available.
Are uploaded images stored on the server?
No. Images selected in Display Lab tools are processed locally in your browser and are not uploaded to or stored on our servers. Generated previews are downloaded directly to your device. Read the Privacy Policy for complete details.
Which Display Lab tools are available?
Display Lab includes six main tools: Social Image Optimizer for resizing, cropping, compression, and multi-size ZIP exports, Safe Zone Checker for social interface overlays and 9:16 exports, Contrast Checker for WCAG ratios and image-pixel sampling, Color Vision Simulator for partial and complete color-vision simulations, Display Specs Lab for physical screen calculations and reports, and QR Code Generator for private static QR codes with PNG and SVG export.
What is the difference between clean and analysis Safe Zone exports?
A Clean 9:16 export contains the prepared image without Display Lab overlays and is intended for publishing. An Analysis Preview contains the selected danger-zone shading and, when enabled, the center grid and safe outline; it is intended as a reference for review. Both are generated locally. In Batch mode, each image consumes one Free check, Free uploads are limited to the smaller of three images or the remaining daily allowance, and PRO supports batches of up to 20 with clean or analysis ZIP export.
Are safe-zone overlays exact?
They are practical previews based on representative platform interfaces, not permanent guarantees. TikTok, Instagram, Facebook, YouTube, devices, and app versions can change their controls or cropping. Leave comfortable space around essential text, logos, captions, and faces, then verify important work on the current target platform.
Does the contrast result guarantee accessibility?
The checker calculates the numerical contrast ratio and displays relevant WCAG AA and AAA thresholds. Contrast is an important accessibility check, but a passing ratio does not certify an entire design or product. Text size, typography, hierarchy, interaction, alternative content, and user testing may also matter.
How do I sample contrast from an image?
Open the Contrast Checker, upload a screenshot or thumbnail, select whether you are picking text or background, and click the relevant pixel. Sample several pixels around textured or photographic backgrounds and use the lowest plausible ratio as the cautious result. The image remains in your browser, and the movable Help window provides the full workflow.
What do Protan, Deutan, Tritan, and Achromatic mean?
Protan simulations model reduced or absent long-wavelength cone response, Deutan simulations model the medium-wavelength response, and Tritan simulations model the short-wavelength response. Achromatic removes color information as a practical brightness-based reference. Strengths from 20–80% represent partial anomaly simulations; 100% represents the complete “opia” form. Results use a Machado–Oliveira–Fernandes-based model and are design approximations, not medical diagnoses. See the explanations and scientific references inside the Color Vision Simulator.
What is the difference between Grid and Before/After in Color Vision?
Grid shows the original and all simulations together. Before/After overlays one selected simulation with the original and lets you drag the vertical divider directly or use the range control. Zoom and panning are synchronized for inspecting the same detail. Individual PNG files and a ZIP containing all variants are generated locally.
Why does 3440×1440 show both 43:18 and approximately 21:9?
43:18 is the exact simplified mathematical ratio. 21:9 is the familiar commercial category used for nearby ultrawide formats. Display Specs Lab shows both so that an approximate marketing label is not mistaken for the exact proportion.
What do PPI, pixel pitch, PPD, and Retina distance mean?
PPI is the number of pixels per physical inch. Pixel pitch estimates the physical size of one pixel. PPD estimates how many pixels occupy one degree of vision at the viewing distance you enter. Retina distance uses an approximate one-arc-minute visibility threshold. These are orientation aids—not ratings of brightness, contrast, refresh rate, color accuracy, operating-system scaling, or overall panel quality.
Why is PPI omitted from Content Size mode?
A digital file has pixel dimensions and an aspect ratio but no single physical size. The same image may be displayed on a phone, monitor, television, or print at different dimensions, so assigning it an intrinsic PPI would be misleading. Content Size therefore reports pixels, ratio, orientation, and megapixels; Display Calculator adds PPI only when a physical diagonal is known.
What is included in a Display Specs PDF?
The print-friendly PDF includes Display Lab branding, generation time, selected resolution and diagonal, exact and commercial ratios, PPI, megapixels, physical dimensions, pixel pitch, PPD, approximate Retina distance, and—when enabled—a Display A/B comparison. It is generated locally on a white, printer-friendly page. A compact PNG card and a URL containing only the selected numeric settings are also available.
Can you review my thumbnail?
Display Lab provides automated visual checks and educational guidance, but does not currently promise individual creative reviews. You can still send feedback about a confusing result or suggest a workflow that would make the tools more useful.
Can I request a new platform preset?
Yes. Include the platform, content format, device, and a link to official layout guidance when available. Screenshots showing current interface controls are helpful when you have permission to share them. Send the request through the Contact page.
How quickly will I receive a reply?
Most genuine support messages receive a response within 24 hours on business days. Weekends, holidays, complex bugs, and requests requiring database or payment-provider investigation may take longer.
Where should privacy or deletion requests go?
Email traian_an@yahoo.com with “Privacy Request” in the subject. Use the relevant checkout or contact email and describe the data you want accessed, corrected, or deleted. Do not send card numbers, security codes, passwords, or a complete API key.
Still need help?
Visit the Contact page and include the relevant URL, browser, device, steps to reproduce the problem, and the exact error message.