About Glutool
Glutool is a free collection of online utilities for developers, SEO specialists, analysts and anyone who handles files, text and data every day. Our goal is simple: every tool should do one job clearly, run quickly and explain itself well enough that you can trust the result.
Why Glutool exists
Everyday tasks such as formatting a JSON payload, converting an image, checking a sitemap or generating a hash should not require installing software or navigating pages full of clutter. Glutool brings these tasks together in one consistent interface, with clear options, instant output and written guidance on how each tool works and when to use it.
What you will find here
- Developer tools — JSON, XML, YAML, TOML and SQL formatters, converters and code generators.
- Web and SEO tools — sitemap, robots.txt and schema markup generators, an on-page SEO checker and a SERP preview.
- Image and file tools — converters, compressors, OCR, metadata viewers and PDF utilities.
- Security tools — hashing, encryption, JWT and JWE helpers, password and UUID generators.
- Text and visualization tools — diff, regex testing, case conversion and tree or table viewers.
How we build and maintain the tools
- Each tool page includes an explanation of what the tool does, how to use it, and answers to common questions.
- Where possible, processing happens in your browser so the content you work with stays on your device.
- Tools are tested against realistic inputs, and we correct reported problems as quickly as we can.
- We do not ask you to create an account to use any tool.
Your privacy
We do not sell personal data and we do not store the text or files you process. Read the full details in our Privacy Policy and Terms & Conditions.
Get in touch
Found a bug, want a new tool, or have feedback? Visit the contact page or email us at dev@glutool.com.