Compare

Offsend Browser Extension vs PromptShield

Offsend masks secrets before they reach AI, emphasizing privacy rather than prompt improvement.
Offsend Browser ExtensionMask secrets before they reach ChatGPT, Claude, or Gemini.PromptShieldWrite better AI prompts before you hit send.

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.
PromptShield:PromptShield is a Chrome extension that reviews and improves prompts in AI chat interfaces before you send them.
Best for
Offsend Browser Extension:Local secret masking for AI chats
PromptShield:One-click prompt optimization for web-based AI chats
Who it’s for
Offsend Browser Extension:Developers and teams who paste code, logs or data into AI chat tools.
PromptShield:Developers and users of AI chat tools who want clearer, safer prompts.
Pricing
Offsend Browser Extension:Free
PromptShield:Freemium
Plans
Offsend Browser Extension:—
PromptShield:Free $0 · Pro $7.99 per month
Open source
Offsend Browser Extension:Yes, 1 GitHub stars
PromptShield:—
Works with
Offsend Browser Extension:ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek
PromptShield:ChatGPT, Claude, Gemini, Perplexity, Grok, DeepSeek, Meta AI
DevHunt upvotes
Offsend Browser Extension:11
PromptShield:10
Launched on DevHunt
Offsend Browser Extension:Jun 2026
PromptShield: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

PromptShield features

  • One-click optimization. Transforms a rough prompt into a detailed instruction with a single click.
  • Context & clarity checks. Identifies missing context, vague wording, and suggests improvements.
  • Sensitive data guard. Detects potentially sensitive information and can run OCR locally on images.
  • Prompt library & history. Keeps a local library of optimized prompts and history on your device.
  • Personalization & coach. Learns from your choices locally and can suggest display language.
  • Cross-chat support. Works with ChatGPT, Claude, Gemini, Perplexity, Grok, DeepSeek, and Meta AI.
PromptShield on DevHunt →Alternatives

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