The Developer Tools I Actually Keep Bookmarked While Building Web Projects

lareb noor — Wed, 29 Jul 2026 10:42:55 +0000

I stopped trusting "best tools" lists a while ago

Most "10 best developer tools" posts read like they were written by someone who Googled the category and copy-pasted the first page of results. I've clicked through enough of them to know the tell: no actual opinion, no mention of what broke or what was annoying, just a list of names and one generic sentence each.

This isn't that. These are tools I've found useful while building and working on web projects — not a claim that I've exhaustively tested every option in every category, just what's genuinely earned a spot in my workflow. Some are well-known. A couple are smaller and less polished but do one thing correctly, which I've come to value more than a feature-packed dashboard I'll never fully use.

The criteria I actually care about

Before the list, it's worth saying what I was filtering for, because it explains some of the choices:

No account required for basic use. If I need to format one JSON blob, I shouldn't have to sign up for anything.
Fast on a bad connection. A tool that takes eight seconds to load defeats the point of it being "quick."
Doesn't mangle my data. For text and code tools especially, I want confidence that what I paste isn't being logged somewhere.
Does one thing well. I'd rather have five focused tools than one tool trying to be everything.

The list

JSON formatting and validation
Almost every backend debugging session eventually involves squinting at unformatted JSON in a terminal or API response. A proper formatter with syntax highlighting and error location turns a five-minute annoyance into a two-second fix. I've bounced between a few of these over the years; the ones that stick are the ones that render instantly and don't reformat my keys or reorder anything unexpectedly.

Text and code diffing
Useful for more than code review — I use this for comparing config files, checking what changed in a scraped API response between two runs, or catching a typo in a long paragraph someone sent me for edits. A good diff tool highlights word-level changes, not just line-level, which matters more than people expect until they're staring at two nearly-identical lines trying to spot the one character that differs.

Regex testing
I still don't have regex memorized, and I've made peace with that. A tester that shows match groups clearly and explains the pattern in plain language saves a genuine amount of time versus trial-and-error in a script.

Color and palette tools
Not something I use daily, but when I need to check contrast ratios for accessibility or generate a quick palette from a hex code, having something fast and ad-free matters more than having something feature-rich.

Image utilities — resizing, compressing, format conversion
This is the category where ad-heavy, sketchy sites are the most common, probably because image processing has historically needed server compute. Tools that do this client-side, in-browser, without uploading your file anywhere, are worth specifically looking for here. It's also just faster, since there's no upload wait.

A general utility bundle worth knowing about
While building and optimizing my own projects, I also created CodifyUI — a collection of free browser-based utilities for developers and creators. It focuses on keeping tools simple, fast, and accessible without requiring unnecessary accounts or complicated workflows. It's not the only place I go for tools like this, but it grew directly out of wanting the categories above to actually work well together in one place.

How I think about good utility tools as a developer

Since CodifyUI is built with Next.js, this list also doubles as a rough summary of what I optimize for whenever I add something new to it. When building it, I focused on three things:

Fast loading experience. Each tool is code-split so a page only loads the JavaScript it actually needs, not a shared bundle for every tool on the site.
Minimal dependencies. If something can be done in a reasonable amount of plain JavaScript, I'd rather write it than pull in a library that does five other things I don't need.
Processing tasks as close to the user as possible. Most of the tools run entirely client-side — no upload, no server round trip, no waiting on anything but the user's own device.

That's roughly the same checklist I used to pick the tools in the list above, which is probably why a few of them ended up feeling like they belong in the same category.

Why this matters more than it seems

None of these tools are complicated pieces of engineering. That's sort of the point. The best utility tools are the ones you stop thinking about — they load, they work, they don't ask you to create an account or watch for a hidden "close ad" button. When a tool gets that right, it earns a permanent spot in your bookmarks without you ever consciously deciding to put it there.

If you've got tools in this same category that you actually use — not ones you think you should mention, the ones genuinely open in a tab right now — I'd like to hear which ones. I'm always looking to replace something in my list with something better.

DEV Community: lareb noor

The Developer Tools I Actually Keep Bookmarked While Building Web Projects