Frequently Asked Questions

Nex-WebTools is a free collection of web-based tools for developers, students, and professionals. It includes JSON formatters, encoders/decoders, text utilities, unit converters, number system converters, image tools, and more. Every tool runs entirely in your browser — no data is sent to any server.

Yes, all core tools are 100% free and always will be. We support the site through non-intrusive advertising. There are no premium tiers, hidden paywalls, or feature gates.

No. All tools are available instantly without sign-up, registration, or login. Just open the tool and start using it.

Nex-WebTools currently offers 165+ tools across 20 categories: JSON/Data, Encoding, Text, Text Converters, Code/Dev, Dev Productivity, Color, CSS/UI, Hash/Crypto, Security, Image, Media/File, Date & Time, Finance/Math, Personal Finance, Health & Fitness, Unit Converters, Number Systems, Student Tools, and Generators & Utilities. We regularly add new tools.

Absolutely. All tools run 100% client-side in your browser using JavaScript. No data is ever uploaded to our servers. Your JSON, text, images, and other inputs never leave your device.

We only use basic analytics cookies to understand aggregate traffic patterns. We do not collect, store, or process any content you enter into our tools. See our Privacy Policy for full details.

Since all processing happens in your browser, your data never touches our servers. This makes Nex-WebTools suitable for working with confidential or sensitive data. However, you should always follow your organization's security policies.

Our data tools support JSON, CSV, YAML, XML, TOML, and TSV. Encoding tools handle Base64, URL encoding, HTML entities, JWT, and more. Image tools work with PNG, JPEG, WebP, SVG, and GIF. Code tools support JavaScript, HTML, CSS, SQL, Markdown, and .htaccess. We're continuously adding support for more formats.

Our converters use precise conversion factors from international standards. Results are displayed with up to 6 decimal places for standard values, or in scientific notation for very large or very small numbers.

Once a page is loaded, most tools continue working without an internet connection since all processing is done in your browser. However, you need an initial connection to load the page.

There are no hard limits set by us. However, very large inputs (multiple megabytes) may be limited by your browser's memory. For most typical use cases, there are effectively no limitations.

Yes. Every tool is fully responsive and works on desktop, tablet, and mobile devices. The interface adapts to your screen size automatically.

Nex-WebTools is built with pure HTML, CSS, and vanilla JavaScript — no heavy frameworks. This keeps the site extremely fast and lightweight. Pages typically load in under 1 second.

Nex-WebTools works on all modern browsers: Chrome, Firefox, Safari, Edge, and their mobile equivalents. We recommend keeping your browser up to date for the best experience.

We use a small number of cookies: one to remember your dark/light mode preference, one for cookie consent status, and optional analytics cookies. See our Cookie Policy for details.

There are two easy ways! Every tool page has a Report Bug / Suggest Feature button at the bottom — just click it and submit your idea directly. You can also visit our Contact page to send a suggestion. We prioritize tools that are most requested by our community.

The quickest way is to use the Report Bug / Suggest Feature button available at the bottom of every tool page — it automatically includes the tool name for easy tracking. Alternatively, report bugs through our Contact page with details about the tool, your browser, and what went wrong. Screenshots are always helpful. We aim to fix bugs as quickly as possible.

Currently, we don't offer embeddable widgets. However, you're welcome to link to any of our tools from your website. All tool URLs are permanent and SEO-friendly.