ContextBlur Alternative: BlurFirst (100% Local + Automatic PII Blur)
For most teams, BlurFirst is the stronger choice — it adds one-click automatic PII detection and an ironclad “nothing ever leaves your browser” guarantee on top of the manual blur ContextBlur offers. ContextBlur is still a capable, well-documented option if all you need is manual blur.
What ContextBlur does well
ContextBlur is one of the better-known screen-sharing privacy extensions. It offers element and region blur, persistence across sessions, and a lot of helpful documentation. If you want a solid, established click-to-blur tool, it's a reasonable pick.
BlurFirst vs ContextBlur
| Feature | BlurFirstRecommended | ContextBlur |
|---|---|---|
| Click-to-blur an element | ✓ | ✓ |
| Drag-a-box region blur | ✓ | ✓ |
| Panic (blur the whole page) | ✓ | Check their site |
| Automatic PII detection | ✓ (Scan) | Manual only |
| Works with Zoom, Meet, Teams, Loom | ✓ | ✓ |
| 100% local — nothing uploaded | ✓ | Privacy-focused — check policy |
| Per-site persistence | ✓ | ✓ |
| Price | $5/mo · $49/yr · $70 lifetime | Check their site |
Why BlurFirst wins
- One-click automatic PII blur. The Scan button finds and hides emails, phone numbers, credit cards, SSNs and API keys (AWS, Stripe, Google, Slack, GitHub tokens, JWTs, private keys) — you don't hunt field by field.
- 100% local, including detection. Nothing you blur — or even scan for — leaves your browser. For a privacy tool, that guarantee is the whole point.
- Three gestures + panic. Box, element, and a panic shortcut that blurs the entire page the instant something appears mid-call.
- Reliable persistence. Blurs are scoped per page and re-apply after re-renders and single-page-app navigation.
Which should you choose?
If you're happy blurring manually and already use ContextBlur, it does the job. If you want the tool to find sensitive data for you and you care that detection runs entirely on your machine, try BlurFirst — it installs in seconds and the annual plan has a free trial.
Comparison based on each tool’s publicly available information as of June 2026. Features and pricing change — please verify the latest details on the other product’s own site. We make BlurFirst, so weigh this accordingly; we’ve aimed to describe alternatives fairly.