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Offsend Browser Extension vs OpenBlur

Masks secrets before they reach AI services, focusing on AI-prompt privacy rather than general webpage blurring
Offsend Browser ExtensionMask secrets before they reach ChatGPT, Claude, or Gemini.OpenBlurFree, Private, Blur!

Side by side

What it is
Offsend Browser Extension:Offsend is a local-first browser extension that detects and masks secrets in prompts before they reach AI chat services.
OpenBlur:OpenBlur is a Chrome extension that lets you blur or hide any webpage element for privacy or distraction-free viewing.
Best for
Offsend Browser Extension:Local secret masking for AI chats
OpenBlur:On-the-fly webpage element blurring
Who it’s for
Offsend Browser Extension:Developers and teams who paste code, logs or data into AI chat tools.
OpenBlur:Anyone who needs to conceal sensitive info or remove distractions while browsing, screen-sharing, or taking screenshots.
Pricing
Offsend Browser Extension:Free
OpenBlur:Free
Open source
Offsend Browser Extension:Yes, 1 GitHub stars
OpenBlur:—
Works with
Offsend Browser Extension:ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek
OpenBlur:—
DevHunt upvotes
Offsend Browser Extension:11
OpenBlur:7
Launched on DevHunt
Offsend Browser Extension:Jun 2026
OpenBlur:Sep 2026

Offsend Browser Extension features

  • Local detection. Scans prompts in the browser without sending data to any server.
  • Automatic masking. Replaces detected secrets with readable placeholders like {{API_KEY_1}}.
  • Restore capability. Keeps encrypted, time-limited mappings to restore original values locally.
  • Custom rules. Add JavaScript regex patterns to detect organization-specific secrets.
  • Mode selection. Choose Warn, Auto-mask, or Block behavior when secrets are found.
  • Built-in detectors. Detect emails, phones, API keys, tokens, private keys, credit cards, IPs, UUIDs and more.
Offsend Browser Extension on DevHunt →Alternatives

OpenBlur features

  • Element blur/hide. Select and blur or hide any element on a webpage with a single click.
  • Precise control. Choose exactly which parts of the page to conceal.
  • In-browser only. Runs entirely in the browser without external servers.
  • No data collection. Does not collect, store, or transmit personal data or browsing activity.
  • Free for personal use. Available at no cost for non-commercial users.
  • Commercial licensing. Commercial use allowed via Chrome Web Store install or a license grant.
OpenBlur on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.