№01
Contrast analysis
Check logo contrast against light and dark backgrounds to ensure visibility everywhere.
§01 Logo Checker
Is your logo readable
at 16 pixels?
Analyze your website logo for contrast, legibility and dark-mode compatibility — then fix what's missing.
URL → Extract → Analyze → Score → Fix
siteassets.dev Logo · Score 88
Detected logo
SVG · 3 colours · Good contrast
16px
32px
Dark
Light
Contrast · Legibility · Colours ✓ Good
§02 — Analysis
What the checker inspects.
Every property that determines whether your logo works across browsers, devices and themes.
№02
16px legibility test
Verify your logo remains recognizable at favicon size — the ultimate readability challenge.
№03
Dark mode survival
Ensure your logo works on both light and dark backgrounds without losing detail.
№04
Scored audit
Get a 0–100 score with critical issues, warnings and passed checks for your logo.
§03 — Verdict
One number. No fluff.
A single score summarises your logo quality. Drill into the issues, the warnings, and the checks that already pass.
- Critical — logo missing or unreadable at small sizes.
- Warnings — contrast issues or too many colours.
- Passed — best-practice checks already met.
Logo score
88/100
Good, room to improve
Sample
0
Critical
2
Warnings
1
Notes
9
Passed
§04 — Checks What we analyze
№01
SVG logos
Vector logos with proper viewBox, currentColor and responsive sizing
№02
Raster logos
PNG/JPG logos checked for resolution, transparency and compression
№03
Favicon-size test
Logo rendered at 16×16 to verify legibility at the smallest size
§05 — FAQ
Questions, briefly answered.
Everything you need to know before you check.
01 What does a Logo Checker do? +
It analyzes your website logo for contrast, colour count, legibility at small sizes and dark-mode compatibility. It tells you whether your logo will look good everywhere — from browser tabs to social media.
02 Why check logo at 16px? +
16×16 pixels is the size browsers use for favicons and tab icons. If your logo isn't recognizable at that size, users can't identify your site in a crowded tab bar. The checker flags logos that lose detail when scaled down.
03 What makes a good logo for the web? +
A web-ready logo should work at 16px, have good contrast on light and dark backgrounds, use a limited colour palette, and ideally be available as SVG for infinite scalability. The checker validates all of these.
§06 — Start
Check your logo
Check your logo
now.
One URL. Full audit. See if your logo works everywhere.
— free, no login required.