UtilEngine
The launcher your browser is missing.
A collection of everyday productivity tools inside a fast, keyboard-first launcher that lives on every page of your browser. Chat with AI, save your windows as sessions, and search your tabs and history without leaving the page.
Get it for $49
Chat with AIAICommand
Search YoutubeBookmark
Convert To PNGImage ConverterCommand
URL Encode / DecodeURLCommand
Save SessionSessionsCommand
Save hours every week
Skip the tab-hopping. Commands run inline.
Buy once, use forever
No subscriptions. No hidden fees.
New tools monthly
All future updates included, no extra charge.
Stays in your browser
Your data is yours. We only check that you are signed in.
How it works
Everything you need,
one shortcut away
Shortcuts
Every tool, any page. Alt+Z by default, change it anytime.
Calculator
Type math in the search bar. Functions, constants, history, all inline.
Chat with AI
Full chat with any model, on any tab.
AI Commands
Reusable prompts with dynamic variables, and a different model for each one.
Ask AI
Type a question. Hit Tab. Skip the chat UI.
Bookmarks
Save sites with placeholders. Launch them by name from any page.
History
Find any visited page. Type a keyword or paste a URL.
Downloads
Find any past download. Open it again in one click.
Tabs
Type t, find any open tab. Close a dozen at once.
Currency Converter
35 currencies, live rates. Type 100 USD to EUR in the search bar.
Sessions
Save any window as a session. Restore it anywhere, anytime.
50+
tools & commandsTools & Commands
Text, code, images, JSON, URLs, and more.
Never lose a window
Save any window as a session. Close it, reopen it tomorrow, or on another machine.
Explore sessions
Figma - Q3 Redesign
Competitor teardown
Pricing research
Analytics
Launch checklistAI where it's most useful, in your browser
Ask about a page, rewrite a selection, or write your own commands. Runs where you are, not in another tab.
Explore the AIWhich tabs did I leave open on this?
• Three on OpenRouter pricing • One on model routing • Two on the extension docs
Claude Sonnet 5
Any of them bookmarked?
Two of them, both under Reading.
Claude Sonnet 5
What did the pricing pages say?
You pay providers directly. No markup in between.
Claude Sonnet 5
Chat with AI
Streaming chat with any model, switchable mid-conversation. Web search included.
Fix the spelling and grammar of: {selection}
AI Commands
Six built-in commands, or write your own using anything on the page.
One profile, every browser
Your sessions, bookmarks, and AI commands follow you. Chrome, Brave, Edge, any device.
Q3 RedesignGitHub IssuesTranslate ToFix Spelling and GrammarQ3 RedesignGitHub IssuesTranslate ToFix Spelling and GrammarYour favorite productivity tools, all in one place
Explore the command palette
HTML
Preview, beautify or sanitize HTML code.
HTML Preview
HTML Sanitizer
HTML Beautifier
Image Converter
Convert images to different formats effortlessly.
Convert To PNG
Convert To JPEG
Convert To WEBP
JSON
Parse JSON, convert it to YAML, CSV or vice versa.
JSON Parser
JSON to CSV
JSON to YAML
YAML to JSON
CSV to JSON
Text
Inspect text to extract information, find diff, convert case, and more.
Text Case Converter
Text Diff
Text Inspector
Lorem Ipsum
Random String
Backslash Escape/Unescape
URL
Extract information from URLs. Encode, Decode or Parse URLs.
URL Encode / Decode
URL Parser
Base64
Encode content to Base64 or decode Base64 to content.
Base64 String Encode/Decode
One payment, yours forever
Every tool, every AI command, every future update included.
Lifetime access
Everything UtilEngine does, today and every future update.
One-time payment. VAT included.
Already bought it? Install from the Chrome Web Store
Questions, answered
Do you offer a trial version?
No trial, but you get 14 days to refund. No questions asked.
How do I get started after buying?
Install it from the Chrome Web Store, click Sign in, and pick Google or a one-time code sent to your purchase email. No license key to copy. The extension registers the device on its own.
Can I use UtilEngine on my work and home computer?
Yes. Your account works on up to 10 devices at the same time. Manage your devices from your Dashboard.
What browsers are supported by UtilEngine?
UtilEngine works on Chrome, Brave, Edge, and other Chromium browsers. Firefox support is on the roadmap.
Do you collect my data?
No. You sign in once with Google or your purchase email, and we store your name and email. Nothing else leaves your browser. Nothing is shared with anyone.
What can the AI do?
Ask a question inline, summarize or rewrite a selection, ask about the page, and write your own commands. Chat can search your tabs, history, and downloads. Any of 66 models, a different one per command if you like.
Do I need to pay for AI features separately?
AI features need a free OpenRouter API key. You pay OpenRouter directly for usage. We take no markup.
Does it work on all websites?
Yes. UtilEngine uses Shadow DOM isolation, so it never interferes with page styles. On restricted pages like chrome:// URLs, it opens in a standalone tab.
Go deeper
Every feature above has its own page. Start with the one you came for.