URL Query String Builder
Build or edit the query string of a URL with key/value rows. Values are percent-encoded correctly; existing parameters are parsed into rows. Free, fast, no sign-up required.
How to use URL Query String Builder
- Open the tool at the top of this page.
- Upload your file or enter your text/data.
- Click the action button and download your result instantly — no sign-up needed.
About URL Query String Builder
Category: Developer Tools. Build or edit the query string of a URL with key/value rows. Values are percent-encoded correctly; existing parameters are parsed into rows. No account or installation required. Works on any device — Windows, Mac, Android, iPhone.
Free limit: 40 MB per file · Premium limit: 500 MB per file · Files auto-deleted in 1 hour.
Frequently Asked Questions
Is this tool free?
Yes. Toolysite is 100% free to use. No account required.
Do I need to install anything?
No. Everything works online in your browser. No software download needed.
Is my data safe?
Yes. Your files are processed securely, never shared, and automatically deleted within 1 hour.
What is the file upload limit?
Free users can upload up to 40 MB — which is higher than most tools websites. For larger files up to 500 MB, upgrade to Premium.