Browser-based utility suite
HandyApps helps you ship cleaner pages and faster workflows.
HandyApps is an English-first landing page for a multilingual toolbox covering SEO review, image editing, PDF workflows, network diagnostics, and developer utilities. The goal is simple: give you practical browser tools that are fast to open, safe to test, and easy to chain together during publishing, QA, and content operations.
If you are checking a landing page before launch, validating a sitemap, testing robots rules, resizing assets, or cleaning up developer output, you should be able to do it without signing in or wiring up a server runtime. HandyApps keeps most workflows in the browser and labels anything that needs backend support so search teams, marketers, indie makers, and developers can move quickly with fewer surprises.
What HandyApps is
A practical workflow hub, not just a link list
The strongest utility sites are not empty shells with a single widget. They explain what each workflow solves, link related tools together, and give search engines enough structure to understand the page. HandyApps is being rebuilt around that model so the homepage can act as a real discovery surface for people and crawlers.
That means clear headings, internal links, structured content, helpful descriptions, and supporting references to trusted sources such as Google Search Central, Schema.org, and MDN semantic HTML guidance. Those references support the educational side of the product instead of sitting as filler links.
Most tools run fully in your browser, which keeps common file and metadata checks fast and low-friction.
Server-required features are clearly labeled so you can separate lightweight QA tasks from backend-dependent workflows.
Config-driven routing keeps sitemap, menu, and tool discovery aligned across the site.
Category overview
Start from the workflow you need
| Category | What it covers | Priority links |
|---|---|---|
| Calculation | Converters, scientific math, and LaTeX graph plotting tools. | |
| Network | Network diagnostics and lookup tools. | |
| SEO Marketing | Technical SEO checkers and search preview tools. | |
| Documents | PDF and document conversion tools. | |
| Image | Compression, conversion, and visual editing for images. | |
| Developer | Formatting, validation, and text processing utilities. |
Featured workflows
Open the browser tools people reuse the most
Start with a diagramming workspace or jump into metadata, crawl, and snippet QA without leaving the browser.
Live Multi Mermaid Editor
Edit and preview multiple Mermaid charts on one screen. Unlike the official Mermaid editor, you can manage many charts in a single workspace.
Keep multiple diagrams at once in a single live workspace so you can compare edits without swapping tabs or rewriting blocks.
Meta Tag Checker
Inspect title, description, and Open Graph tags.
Review title, description, and Open Graph fields before a page goes live.
Sitemap Validator
Validate sitemap XML structure and URLs.
Catch malformed XML, empty URL sets, and structural sitemap issues early.
Robots.txt Tester
Test crawl rules against user-agent paths.
Test crawler access rules before you block an important path by mistake.
SERP Snippet Preview
Preview how your page can appear in search results.
Check how search snippets read before publishing metadata changes.
FAQ
Questions people ask before using HandyApps
What is the best starting point for technical SEO on HandyApps?
Start with the Meta Tag Checker, Sitemap Validator, Robots.txt Tester, and SERP Snippet Preview. Together they cover metadata quality, crawlability, discovery, and preview messaging.
Who is this site built for?
HandyApps is useful for marketers, developers, founders, and content teams that need fast browser-based checks without heavy setup.
Do I need to use the English homepage?
No. This root page is the default landing experience, but every tool and content page remains available under locale-prefixed routes such as `/en/` and `/ko/`.