Free browser tool

Logo Grader

Find technical weaknesses before a logo reaches a website, app icon, presentation, or print handoff. The score is rule-based and every point is explained. For the score, palette and contrast in one pass, use Brand Preflight.

Private by design. Your image is analyzed locally in this browser. It is not uploaded or stored.

Private processing: static SVG, PNG, JPEG or WebP; up to 16 megapixels and 8,192 pixels per side. SVG is sanitized and rendered in this tab. Files and analysis results stay in this tab. Source limit: 10 MB. Palette values are estimates from this file, not official brand colours. The grade is a technical heuristic, not an AI opinion, accessibility certification or originality verdict.

What makes a logo file production-ready?

A useful master logo should remain recognizable at small sizes, work on light and dark surfaces, avoid unnecessary raster artifacts, and be available in a scalable or high-resolution source. Transparency and controlled file weight make everyday placement easier.

This grader evaluates the uploaded file rather than judging the creative idea. A technically excellent export can still be generic, inaccessible in its final context, or legally risky. Use the result as a QA checklist, not a design verdict.

How the score works

Resolution contributes 20 points, measured 16 px legibility 20, colour control 15, main-colour contrast 15, transparency 10, format 10 and file weight 10. Each check shows the points it earned. The 16 px check trims empty margins, renders the mark in a 16 px square and measures its short side, how much of it still draws as solid pixels and how much tonal detail survives compared with 64 px. Sources under 256 px on the shortest side are capped at 60 (under 128 px at 40), and photo-like files without transparency at 55. SVG files are sanitized and rendered in this tab; live text in an SVG loses format points because it depends on installed fonts. JPEG is marked down because it cannot preserve transparency and often adds edge noise.

Questions about the logo grader

What does the logo score measure?

Seven technical checks worth 100 points: resolution (20), measured legibility in a 16 px square (20), number of distinct colours (15), contrast of the main colour on its background (15), transparency (10), format (10) and file weight (10). Small sources and photo-like files are capped, and every check shows the points it earned.

Is the uploaded logo stored?

No. The image is decoded and measured by scripts running in this browser tab. Nothing is uploaded or saved, and the results disappear when you reset or leave the page.

Does a high score mean a logo is trademark-safe?

No. The score describes the file, not the originality or legal status of the design. For a formal check, search an official trademark register and ask a qualified adviser.

Optional usage measurement

Help us understand which catalogues and file formats are useful. We do not record search text, uploaded images, names, email addresses or IP addresses in usage events. Events expire after 30 days. Local, staff and recognised bot traffic is separate.

Measurement is off until you opt in. Downloads have separate operational delivery counts.