The internet has no shortage of online tools. There are thousands of websites promising to compress an image, check your website speed, generate a design, format code, or solve some tiny problem that would otherwise take ten minutes.
The problem is finding the tools that are actually worth using.
The best online tools tend to have one thing in common: they solve a specific problem quickly. You open the website, do what you need to do, and move on with your day.
Here are 10 useful online tools worth bookmarking in 2026, covering website performance, design, images, development, productivity, and everyday web tasks.
1. Google PageSpeed Insights
If you own or manage a website, Google PageSpeed Insights is one of the first tools worth checking.
It analyzes a webpage and provides performance information for both mobile and desktop experiences. It also reports on important performance metrics and highlights potential improvements.
The useful part isn't simply getting a score. The recommendations can help you identify problems such as oversized resources, rendering issues, inefficient loading, and other performance bottlenecks.
For anyone working on SEO or website optimization, PageSpeed Insights is an excellent starting point.
Best for: Website owners, developers, SEO professionals
Website: PageSpeed Insights
2. GTmetrix
Another excellent website performance tool is GTmetrix.
GTmetrix goes beyond giving you a simple performance score. It provides detailed reports showing where a page is slow and what may be causing the problem. Its reports include Lighthouse metrics, Web Vitals, waterfall information, and other performance diagnostics.
This makes it particularly useful when you already know that a website is slow and want to understand why.
If you regularly work on websites, keeping GTmetrix bookmarked can save a lot of time when diagnosing performance problems.
Best for: Developers, web consultants, agencies, site owners
Website: GTmetrix
3. Canva
Not every useful web tool is technical.
Canva has become one of the easiest ways to create graphics, presentations, social media designs, documents, logos, and other visual content without being a professional designer.
Its current toolkit includes AI-assisted features for things such as image editing, image generation, writing, voice generation, and image enhancement, alongside its large collection of templates.
For a small business owner or creator who needs a graphic quickly, Canva can eliminate the need to open complicated desktop design software.
Best for: Creators, marketers, small businesses, social media managers
Website: Canva
4. TinyPNG
Images are one of the easiest ways to make a website unnecessarily heavy.
TinyPNG is a simple image optimization service designed to reduce image file sizes while keeping the visual quality acceptable.
It is especially useful before uploading images to a website, blog, online store, or social platform.
A few seconds spent compressing images can make a noticeable difference when you're dealing with lots of photographs or graphics.
Best for: Website owners, bloggers, designers, developers
Website: TinyPNG
5. JSON Formatter
Developers regularly encounter JSON that is technically valid but almost impossible to read.
A JSON formatter solves that tiny problem immediately.
Instead of manually adding indentation and line breaks, you can paste the JSON into a formatter and turn it into a structured, readable format. Many formatters also make it easier to spot malformed JSON.
It's one of those tools that may only save you a minute or two at a time — but developers encounter that problem often enough for those minutes to add up.
Best for: Developers, API users, technical teams
There are many good JSON formatting tools online, so this is one category where keeping a reliable formatter bookmarked is more important than choosing a particular brand.
6. Remove.bg
Removing the background from an image used to be a task that often required Photoshop or another image editor.
Remove.bg turned it into a much simpler web workflow.
Upload an image and the service automatically attempts to separate the foreground from the background.
It's particularly convenient when you need a quick product image, profile picture, social graphic, or marketing asset without spending time manually selecting objects.
Best for: Designers, ecommerce sellers, marketers, creators
Website: Remove.bg
7. Photopea
If Canva is designed around simplicity, Photopea takes a different approach.
Photopea is a browser-based image editor that feels much closer to traditional desktop image-editing software. It can be useful when you need layers, selections, masks, filters, and more advanced editing capabilities without installing software.
For someone who occasionally needs Photoshop-style functionality but doesn't want another desktop application, it's an extremely useful option.
Best for: Designers, developers, creators, occasional image editors
Website: Photopea
8. Regex101
Regular expressions are incredibly useful — and notoriously easy to get wrong.
Regex101 gives developers an interactive environment for building and testing regular expressions.
Instead of repeatedly changing a regex inside your application and running the program again, you can experiment with the expression against sample text and immediately see what matches.
For developers who don't write regex every day, this kind of tool can be a huge time saver.
Best for: Developers, programmers, data analysts
Website: Regex101
9. Mixaro
Sometimes you don't need a giant platform. You just need a small tool that does one particular thing.
That's the idea behind Mixaro — a growing collection of small web utilities covering areas such as SEO, text, images, development, metadata, generators, and other everyday web tasks.
The interesting thing about a large collection of small tools is that they don't necessarily compete with each other. A developer might need a JSON tool, an SEO professional might need a metadata generator, and a website owner might need an image or text utility.
Each tool solves a different problem.
Mixaro is therefore worth exploring when you have a specific web-related task and want to see whether there's already a small utility for it rather than searching through large software platforms.
Best for: Developers, SEO professionals, marketers, web consultants, creators
Website: https://www.mixaro.space
10. Internet Archive's Wayback Machine
One of the most useful tools on the internet isn't really a productivity tool at all.
The Wayback Machine lets you explore archived versions of websites from the past.
It's useful when a webpage has disappeared, a website has been redesigned, an old piece of information needs to be checked, or you simply want to see how a website looked years ago.
For researchers, developers, SEO professionals, journalists, and anyone working with old websites, it can be surprisingly valuable.
Best for: Researchers, developers, SEO professionals, journalists
Website: Wayback Machine
The best tool is usually the one that solves your immediate problem
There is no single "best" online tool.
A designer may consider Canva essential. A developer might spend half the day inside Regex101 or a JSON formatter. A website owner may care much more about PageSpeed Insights and GTmetrix.
That's why huge collections of small utilities can be useful. Different people arrive with completely different problems.
The trick is not finding a website with hundreds of impressive features.
It's finding the one tool that solves the problem you have right now.
And once you find one that does, bookmark it. You'll probably need it again.
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