MyIPScan
Lightweight local check

Font Fingerprint Test

Measure a small list of common fonts locally to see whether font availability may add browser-visible detail.

By: Katia Belokon · Updated June 2026

Font signal

Current Result

Checking
Running local font measurement...Checking
Signals shown
Checking
Storage behavior
No server-side storage
Scope
Local font measurement
Font list
Small common-font set

Want to reduce this signal? Here's how to reduce your browser fingerprint →

This is a limited font signal, not a complete font inventory. It checks only a small controlled list and does not send results to a server.

Direct answer

Font Fingerprint Test: answer first

Run a limited local font fingerprint signal check in your browser. Use the result as an observable public-signal check with stated limitations, not as an absolute guarantee.

Last updated

What the Font Fingerprint Test checks

The page measures text widths through a local canvas and compares a small common-font list against generic fallback fonts.

A likely detected font means the measured width differed from generic fallback behavior in this browser session.

Limitations

  • The list is intentionally small to keep the page lightweight.
  • Browser font fallback behavior can cause false positives or false negatives.
  • The result does not measure all installed fonts.
  • No font result is sent to a backend API.

Reduce exposure

What to do next

Font exposure is usually reduced by browser-level protections rather than manual font removal.

  1. Use privacy-focused browser settings that standardize or restrict font access.
  2. Avoid installing rare fonts only for general browsing profiles.
  3. Use separate browser profiles for work that needs special fonts.

Related tools

Browser Fingerprint TestReview the broader browser signal overview. Canvas Fingerprint TestCompare local text and image rendering output. WebGL Fingerprint TestInspect GPU and WebGL capability signals. Client Hints CheckerInspect browser client hint values.

Supporting evidence

Use this font measurement signal as one browser signal, not a full verdict

Run this subtest before and after one browser/privacy setting change when you need focused evidence. For a combined IP, DNS, WebRTC, IPv6, fingerprint, and User-Agent view, use the Public Exposure Report.

BaselineRun the subtest before changing browser, extension, GPU, font, or privacy settings.
RetestChange one setting, restart the browser if needed, and rerun the same subtest.
Safe sharingShare Safe Copy or categories instead of raw hashes, full User-Agent values, or raw browser details.
Browser Fingerprint TestReturn to the broader fingerprint overview. Public Exposure ReportCombine browser and network signals in one Safe Privacy Receipt. Check My Browser PrivacyFollow the browser-focused privacy path.
About this checkWhat it checks, what it cannot, and how to read it

Check my browser/privacy

What this checks

Visible browser/session signals such as public route, DNS/WebRTC/IPv6 behavior, fingerprint traits, user-agent, or public IP context.

Limits

What this cannot check

It cannot certify anonymity, inspect every app, or prove that a VPN, ISP, device, or account is safe.

Read results

How to use the output

Treat results as review signals for this browser/session or public target. Re-test after one change, then use Safe Copy or notes that avoid raw identifiers.

Related tools

Continue with the closest checks

Public Exposure ReportFull browser-session report with Safe Copy, issues, fixes, and clear limits. VPN Leak TestCompare visible IP, DNS, WebRTC, IPv6, and browser signals. What Is My IPPublic IP, ISP, ASN, approximate location, and browser context. Browser Fingerprint TestBrowser-visible traits and focused fingerprint subtests. MethodologyReview how MyIPScan labels signals, limitations, and Safe Copy output.
Quick reference

Font Fingerprint Test: what this tool does

Measures a small list of common font rendering differences locally.

How to use

  1. Run the test and read the detected count rather than the list.
  2. Change a font-related privacy setting or extension, then run it again.
  3. Compare counts and hashes between runs on the same device.

What the result means

Fourteen common fonts are measured against monospace, serif and sans-serif baselines using canvas text width. A font counts as likely present when its width differs from the fallback. The output is a count and a hash; the detected list stays hidden by default.

Known limitations

  • Fourteen named fonts are tested. This is not an enumeration of the fonts installed on the device.
  • Width comparison is approximate and produces both false positives and false negatives depending on browser font-fallback behaviour.
  • A canvas context is required. Without one the test cannot measure anything and says so instead of guessing.

Font Fingerprint Test — Common Questions

How do fonts contribute to browser fingerprinting?

Different operating systems ship with different fonts: Windows has Calibri and Segoe UI; macOS has Helvetica Neue; Linux varies. Installed third-party fonts (Adobe, Office, corporate) make the set more unique. By testing font availability and rendering via canvas measurements, a website can identify your OS and narrow down your device profile — especially for users with non-standard font sets.

How should I use Font Fingerprint Test results?

Use the result to decide what to review next, make one change at a time, and retest in the same browser, network, domain, or provider context when possible.

What does Font Fingerprint Test not prove?

It does not prove anonymity, full security, complete deliverability, full reputation cleanliness, search ranking, or AI citation. It only reports the visible signals available to this tool.

Next checks and references

Privacy DiagnosticsParent hub for this tool category.Browser Fingerprint TestBrowser-visible fingerprint surface overview.Canvas Fingerprint TestLocal canvas rendering signal.WebGL Fingerprint TestLocal WebGL capability signal.Relevant guideBackground reading for interpreting this result.MethodologyHow MyIPScan labels confidence, limits, and safe-copy outputs.