KRHTECH

FIVE INSTRUMENTS, ONE BENCH

Small tools,
built to be exact.

krhtech is a bench of five focused instruments — edit documents, inspect a domain, convert images, reshape data, and test an email flow. No bloat, no accounts required to look around.

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bench://status

THE BENCH

Five modules, in order of the workflow they serve

MODULE 01 .pdf .jpg .png

Document & Invoice Editor

Upload a PDF, image, or chart. Drop editable fields on top — invoice number, line items, totals — reposition them, and export a clean flattened copy.

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MODULE 02 DNS · IP · STACK

Domain & IP Checker

Resolve a domain to its IP, look up host and location, and get a best-effort read on the technology stack a site is running.

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MODULE 03 PNG · JPG · WEBP

Image Converter

Drop in any image and export it as PNG, JPG, or WebP with an adjustable quality setting — all processed locally in the browser.

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MODULE 04 JSON · CSV · ARRAY

Text Format Converter

Paste text in one shape and pull it out in another — JSON, arrays, CSV, key-value pairs, or a plain list.

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MODULE 05 TEMP INBOX · OTP

Email & OTP Test Rig

Generate a free, no-signup temp inbox for QA — use it in any signup flow you're testing, and this module auto-detects the OTP code the moment it arrives.

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Free Online Tools for Everyday Tasks

KRHTech provides a collection of browser-based tools for working with documents, invoices, domains, images, structured data, and email testing. Each tool is designed for a specific task so you can complete common technical and business jobs without installing desktop software.

Online Invoice and Document Editor

Edit invoice and document fields directly in your browser. Upload a PDF or supported image, position editable fields, and export the completed document as a flattened copy.

Domain and IP Checker

Check a domain's IP address and inspect available DNS, hosting, location, and technology information. This tool is useful for developers, website owners, and troubleshooting.

Image Format Converter

Convert images between PNG, JPG, and WebP formats directly in your browser. Adjust image quality and process files locally where supported.

JSON and Text Converter

Transform structured text between JSON, CSV, arrays, key-value pairs, and plain lists. This can help developers quickly prepare data for another application or workflow.

Email and OTP Testing Tool

Test email verification and OTP flows with a temporary testing inbox. The tool is intended for QA and development workflows rather than receiving personal or sensitive email.

Why Use KRHTech?

Frequently Asked Questions

Are KRHTech tools free?

Yes. KRHTech provides free online utilities, with no signup required for most tools.

Do I need to install software?

No. The tools are designed to run in a modern web browser.

Can I use these tools on a phone?

Yes. The website is designed to work across desktop and mobile browsers.