I used to think VS Code was fine straight out of the box. Turns out, I was working about 40% slower than I needed to be.
After spending the last two years testing extensions—installing them, uninstalling them, watching my terminal light up with errors, then installing them again—I've narrowed down what actually matters. Not the flashy stuff. Not the extensions that look good in a screenshot but bloat your editor. The ones that make your fingers move faster and your debugging sessions shorter.
Here's what's actually worth your time.
1. Prettier — Code Formatter (The Non-Negotiable)
If you're still manually formatting your code or relying on your team's "agreed-upon" style, we need to talk.
Prettier removes the entire argument. It formats your code on save (or on command), and there's no configuration needed unless you're the type who cares about trailing commas in a way that keeps you awake. I'm not, so I left it at defaults.
What Actually Works
The magic happens when you pair it with your editor's save command. Set it to format on save in your VS Code settings, and watch your messy imports, inconsistent spacing, and random indentation get fixed automatically. It's like hiring a detail-oriented editor for free.
The Catch
Sometimes it reformats in ways that feel weird at first. I initially hated how it handled long function parameters, but honestly? It's usually right, and my opinion just needed to catch up.
Install it. This one's non-negotiable.
2. ESLint — The Linter That Actually Catches Your Mistakes
ESLint will nag you. Constantly. It's like having a senior developer looking over your shoulder, except it never gets tired and never judges you for using `var`.
The extension integrates with VS Code's native linting system, so you get squiggly red lines in your editor the moment you write something questionable. Unused variables? Caught. Missing semicolons? Caught (if you want that). Async function without await? Caught immediately.
I used to wait until my code review to find these issues. Now they're flagged before I even commit.
Setup That Actually Matters
You'll need an `.eslintrc` file in your project. Most modern projects have one already. If yours doesn't, ESLint will prompt you to create one. Use the standard config or Airbnb's—both are solid starting points.
Real Talk
It can be noisy if your project's ESLint rules are overly strict. I worked on a legacy codebase where ESLint screamed at me for 15 minutes before I figured out how to disable it for specific lines. That's on the codebase, not the extension.
Worth it? Absolutely. Especially in teams.
3. Thunder Client — REST API Testing Without Leaving the Editor
I used to have Postman open, then my code, then Slack, then my database manager. Browser tabs everywhere. It was chaos.
Thunder Client lives in VS Code's sidebar. You create requests, organize them into collections, and test your APIs without ever minimizing your editor. It's lightweight, faster than Postman, and honestly? It just works.
Why This Beats Postman
Postman is bloated now. It's a full application that eats RAM and wants you to create an account for everything. Thunder Client is a sidebar extension. You're already in VS Code. This is faster to open and easier to version control (it stores requests locally).
The Learning Curve
Nearly nonexistent. If you've used Postman or curl, you know how to use Thunder Client within five minutes.
Best for: Frontend developers hitting APIs, backend developers testing their own endpoints, basically everyone who works with REST.
4. GitLens — Stop Wondering Who Broke This Code
GitLens shows you exactly who wrote every line of code and when. Hover over a line, and you get the commit message, the author, and the date. It sounds like corporate surveillance until you realize how useful it is.
You're debugging a function that doesn't make sense. Was it always this way? GitLens tells you. You see a weird variable name. Who chose it? GitLens. You want to understand the context of a change. GitLens opens the commit.
The Game-Changer Feature
The "Blame" view shows the full history of a file with colors indicating recency. Recent changes are bright; older code is muted. You can immediately see what's changed recently and what's been stable for years.
Performance Consideration
On very large repositories with deep Git histories, GitLens can slow down your editor slightly. I noticed it on a project with 30,000 commits. Turning off some features in settings fixed it, but it's worth knowing.
The real benefit: Context. Code without context is just characters.
5. Copilot — The Expensive One That Actually Saves Time
GitHub Copilot costs $10/month, and I was skeptical for a solid year before buying it. Now I'm skeptical in a different way—I'm skeptical that I ever lived without it.
It's an AI that completes your code. You start typing a function, and it suggests the implementation. You write a comment describing what you want, and it writes the code. It's not perfect, but it's shockingly good for routine work.
Where It Shines
Boilerplate code. Building API routes. Writing tests. Creating utility functions. Writing the same pattern for the tenth time in a project. Copilot already knows what you're about to type.
Where It Struggles
Complex algorithmic problems. Novel code patterns. Anything where you're breaking new ground. It'll suggest something plausible-looking that's completely wrong. You need to know what you're doing to use it effectively.
The Ethics Question
Copilot was trained on public open-source code. There's ongoing discussion about whether this is ethical. I could be wrong here, but if you're uncomfortable with that, don't install it. If you're not, it's genuinely useful.
My position: $10/month to write boilerplate 40% faster is worth it for professional work. For learning? Use it sparingly—you won't learn if the AI writes everything.
6-10. The Solid Supporting Cast
These five extensions don't deserve their own long sections, but they're on the list because they solve real problems:
6. REST Client
Similar to Thunder Client, but simpler and faster if you just need quick API testing. Create `.http` files and run requests directly. No UI, no complexity. I alternate between this and Thunder Client depending on the project.
7. Bracket Pair Colorizer
Colors your brackets in matching pairs. Sounds dumb. Saves hours of debugging mismatched braces. Your eyes scan code faster when brackets are color-coded.
8. Database Clients (depending on your stack)
MySQL, MongoDB, PostgreSQL—there are extensions for each. Running quick database queries without leaving the editor is surprisingly convenient. I use the MongoDB extension regularly.
9. Docker
If you're containerizing anything, the Docker extension shows your containers, images, and registries in a sidebar. Starting, stopping, and debugging containers gets easier.
10. Thunder Client or Postman Rest Client
Pick one. I've already covered both. Thunder Client for modern workflows, REST Client for minimalists.
| Extension | Best For | Cost | Learning Curve |
|---|---|---|---|
| Prettier | Code formatting | Free | None |
| ESLint | Code linting | Free | Minimal |
| Thunder Client | API testing | Free (Pro available) | Very low |
| GitLens | Git history | Free (Pro available) | None |
| Copilot | Code generation | $10/month | None |
| REST Client | API testing (lightweight) | Free | Low |
What I Actually Use Every Single Day
If I had to pick three extensions that are non-negotiable:
1. Prettier. I've never once regretted having it. It's invisibly making my code readable.
2. ESLint. Catches bugs before they become problems. Worth its weight in gold.
3. GitLens. Understanding why code exists is 90% of debugging.
The others are situational. Copilot is useful but optional. Thunder Client is great if you test APIs frequently. Bracket Pair Colorizer is a quality-of-life improvement that shouldn't be necessary but is.
My Take
VS Code out of the box is good. With these extensions, it's exceptional. The mistake most developers make is installing everything they see in a roundup like this and then complaining that their editor feels slow.
Start with Prettier, ESLint, and GitLens. Live with those for a week. Add Thunder Client if you do API work. Consider Copilot if you're working professionally and want a speed boost.
What surprised me: how much faster I got at writing code once I stopped thinking about formatting and style. Prettier and ESLint handled that, so my brain could focus on logic. What disappointed me: how many extensions promised huge productivity gains and delivered almost nothing. Most of them sit in my sidebar unused.
This list is ruthlessly practical. I removed the eye candy, the "nice-to-haves," and the extensions that duplicated functionality. What's left is stuff that either makes you faster, prevents bugs, or helps you understand code. Those are the only extensions worth cluttering your VS Code with.
Verdict
Install Prettier, ESLint, and GitLens immediately. These three will noticeably improve your workflow within the first day. Add Thunder Client or REST Client if you work with APIs. If you want to spend $10/month for a faster development experience, Copilot delivers on that promise—but it's not essential.
Skip the flashy extensions. Skip the ones that require extensive configuration. Skip anything that promises to "revolutionize your workflow" but requires you to learn a new way of thinking. The best extensions disappear into your workflow and make you faster without you thinking about them.
Your VS Code setup isn't complete until you've tested these. Give it a week. You'll wonder why you waited this long.
Published by Dattatray Dagale • 01 June 2026
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