Blog

Learn the difference between profit margin and markup, with formulas and a free calculator.

1 min read · Sat Sep 19

Reduce JPG, PNG, and WebP file sizes in your browser with adjustable quality and max width settings.

1 min read · Sat Sep 19

Turn JPG and PNG images into a PDF with page size, orientation, and margin controls — free and browser-based.

1 min read · Sat Sep 19

Export PDF pages as JPG images with quality control. Download single pages or a ZIP of all pages.

1 min read · Sat Sep 19

Generate a professional PDF invoice with line items, tax, and discounts — no signup required.

1 min read · Sat Sep 19

Quickly beautify, minify, and validate JSON without installing tools or uploading data to a server.

1 min read · Sat Sep 19

Combine multiple PDF documents into one file, reorder pages, and download — all in your browser.

1 min read · Sat Sep 19

Introducing Toolstik — fast, privacy-first online tools for everyday digital tasks.

1 min read · Sat Sep 19