Work smarter with
Cornerpen.
Powerful browser-based tools for PDFs, images, spreadsheets, finance, and more. No downloads. No sign-ups. Just results.
Tools for every need
From documents to data, each tool is built for speed and simplicity.
PDF Tools
Merge, split, compress, and transform PDFs instantly. All processing happens securely in your browser—no uploads, no waiting.
Explore toolsImage Tools
Resize, compress, convert and enhance images with precision. Professional-grade results for designers and content creators.
Explore toolsExcel & CSV
Create, parse, and transform spreadsheet data with ease. Search large datasets, extract columns, and export cleanly.
Explore toolsFinance Tools
Mortgage calculators, investment projections, loan analysis. Clear numbers to guide your financial decisions.
Explore toolsText Toolbox
Case conversion, word count, font preview, and formatting utilities. Everything your writing workflow needs.
Explore toolsProductivity
Task manager, habit tracker, Pomodoro timer. The tools to build better work rhythms and actually get things done.
Explore toolsWhy Cornerpen
Built different,
on purpose.
We believe productivity tools shouldn't require accounts, subscriptions, or installs. Everything runs in your browser, privately and instantly.
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