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HighlightGPT vs Offsend Browser Extension

Provides privacy masking before sending data to AI, whereas HighlightGPT works within ChatGPT without masking.
HighlightGPTHighlight any code snippet in ChatGPT — get clean explanations on the side.Offsend Browser ExtensionMask secrets before they reach ChatGPT, Claude, or Gemini.

Which to pick

Pick HighlightGPT if you want…

  • Highlight-to-ask inside ChatGPT

Pick Offsend Browser Extension if you want…

  • Local secret masking for AI chats
  • Privacy-first data masking
  • A free, open-source tool

Side by side

What it is
HighlightGPT:A lightweight browser extension that lets you highlight any text in ChatGPT and get instant explanations, translations or answers in a side panel.
Offsend Browser Extension:Offsend is a local-first browser extension that detects and masks secrets in prompts before they reach AI chat services.
Best for
HighlightGPT:Highlight-to-ask inside ChatGPT
Offsend Browser Extension:Local secret masking for AI chats
Who it’s for
HighlightGPT:Developers and power-users who interact with code, errors or docs inside ChatGPT.
Offsend Browser Extension:Developers and teams who paste code, logs or data into AI chat tools.
Pricing
HighlightGPT:Freemium
Offsend Browser Extension:Free
Plans
HighlightGPT:Free $0
Offsend Browser Extension:—
Open source
HighlightGPT:—
Offsend Browser Extension:Yes, 1 GitHub stars
Works with
HighlightGPT:—
Offsend Browser Extension:ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek

HighlightGPT features

  • Highlight to ask. Select any text and send it to ChatGPT for questions, explanations, translations or memorization in one click.
  • Side-panel replies. Answers appear in a slim side panel so the main ChatGPT thread stays visible.
  • Save to memory. Manually push important answers to ChatGPT’s memory for future context.
  • Zero extra tokens. Uses ChatGPT’s native web experience without consuming additional tokens.
  • Ad-free Pro mode. Pro upgrade removes ads and adds unlimited memory saves, priority support and early feature access.

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.

HighlightGPT vs Offsend Browser Extension FAQ

Is HighlightGPT or Offsend Browser Extension free?+

HighlightGPT has a free plan and paid plans. Offsend Browser Extension is free.

Is HighlightGPT or Offsend Browser Extension open source?+

Offsend Browser Extension is open source (Offsend/browser-extension on GitHub, Apache-2.0 license). DevHunt has no public source repository on record for HighlightGPT.

On DevHunt

HighlightGPT

6 upvotes · Launched on DevHunt on Jan 13, 2026

HighlightGPT on DevHunt →

Offsend Browser Extension

11 upvotes · Launched on DevHunt on Jun 30, 2026

Offsend Browser Extension on DevHunt →

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