Private by design
Images are decoded and processed locally. Display Lab does not upload or store their visual contents.
Visual QA for creatorsVisual QA for social images and displays
Know how your design
actually performs.
Prepare social images and verify visibility, accessibility, color perception, and display specs—directly in your browser.
✓ No signup✓ Images stay local✓ Clear methodology
Six focused labs
Choose the check your work needs
Start immediately in your browser. Each tool explains the result and keeps visual files on your device.
New featured tool
Social Image Optimizer
Resize, crop, and compress images for Instagram, Facebook, TikTok, YouTube, Threads, X, and LinkedIn.
Open optimizer
Safe Zone Checker
Protect headlines, logos, and calls to action from TikTok, Instagram, Facebook, and YouTube interface overlays.
Local processingBatch
WCAG Contrast Checker
Test HEX colors or sample image pixels, then improve combinations against WCAG AA and AAA thresholds.
WCAG AA/AAAImage picker
Color Vision Simulator
Compare partial and complete simulations using Grid, Before/After, synchronized zoom, and local exports.
Research-basedPNG & ZIP
Display Specs Lab
Calculate physical screen specifications, compare displays, prepare content sizes, and export branded reports.
Compare screensPDF report
QR Code Generator
Create private, permanent QR codes for links, Wi-Fi, contact cards and more, then check and export the design.
PNG & SVGNo expiry
Why Display Lab?
Clear checks without a heavy design suite
Useful outputs
Download clean images, analysis previews, PNG cards, ZIP batches, and print-friendly PDF reports.
Explained methodology
Results include WCAG thresholds, documented simulation methods, calculation context, and practical limitations.
Simple workflow
From input to a useful result
Upload or enter specs
Select an image locally or enter the display dimensions you want to understand.
Inspect and compare
Use overlays, pixel sampling, simulations, zoom, and side-by-side measurements.
Fix and export
Apply the guidance, then download the clean, analysis, ZIP, PNG, or PDF output you need.
Free tools available
PRO purchases are temporarily paused.
All five Free tools remain available. Existing customers can restore access at any time.
From the field notes
Learn what each check means
Practical context for making better decisions—not filler around a calculator.
Composition01
TikTok, Instagram & YouTube Safe Zones
Learn how TikTok, Instagram Reels, Facebook Reels and YouTube Shorts controls affect vertical video and how to keep essential content visible.
Read guideAccessibility02
WCAG Contrast Ratios Without the Guesswork
Understand relative luminance, AA and AAA thresholds, large text and the practical limits of a contrast score.
Read guideInclusive design03
Designing Information That Survives Color-Vision Differences
Use labels, shapes, patterns and contrast to make charts, controls and creative assets understandable beyond hue alone.
Read guideDisplay science04
PPI, Resolution and Viewing Distance: What Screen Specs Really Mean
Connect pixel count, physical dimensions, pixel pitch and viewing distance without confusing display density with image quality.
Read guideImage workflow05
Social Image Sizes: Cropping, Formats and Compression
Build reliable social-media exports by separating aspect ratio, pixel dimensions, crop decisions, file format and compression quality.
Read guideScannable design06
QR Code Design for Reliable Scanning and Printing
Understand static QR codes, quiet zones, error correction, contrast, logos and print testing before publishing or producing materials.
Read guideQuick answers
Before you start
Are my images uploaded?
No. Images used by Image Optimizer, Safe Zone, Contrast, and Color Vision are processed in your browser and are not stored on Display Lab servers.
Can I use the tools for free?
Yes. All six tools have useful Free workflows without signup. Safe Zone applies the currently displayed daily and batch limits.
What does PRO add?
PRO adds unlimited eligible Safe Zone checks, batches of up to 20 images, batch ZIP exports, priority support, and future API access as made available.