Articles

FreeToolMate Blog & Articles

How-tos and cheat sheets for popular FreeToolMate tools. Every article links back to a private browser utility — no signup, no upload.

How to Format JSON Online

Pretty-print messy JSON in your browser without uploading the payload.

Inspect nested API JSON as a collapsible tree, privately in the browser.

Syntax, types, common errors, and the FreeToolMate tools that fix them.

Change PDF text, erase content, and download a private copy in the browser.

Shrink PDF file size for email and uploads without uploading the document.

Turn a PDF into an editable Word file locally in your browser.

Change image dimensions privately — the file never leaves your device.

Reduce JPG, PNG, and WebP size in the browser with no upload.

Create long random passwords locally and copy them into a password manager.

Estimate monthly EMI from principal, rate, and tenure — no signup.

Project SIP maturity value from monthly amount, rate, and years.

Quick patterns for common matches, plus a free regex tester.

Common HTTP status codes with plain-language meanings and when to use each.

SELECT, JOIN, WHERE, and common SQL patterns — plus a free SQL formatter.

Useful curl flags, auth examples, and converters to JavaScript, Python, and more.

Indentation rules, types, anchors, and how to format or validate YAML online.

Query nested JSON with $, .., filters, and wildcards — then try it in the browser.

Check JSON syntax and schema rules privately before you ship an API payload.

Combine multiple PDFs into one file in your browser without uploading documents.

Find values in nested JSON with JSONPath expressions and a free online tester.