What CubTools is
CubTools is a collection of eight free utilities that run entirely in your browser: three for images, two for PDFs, and three for text. There is nothing to install, no account to create, and no payment anywhere — every tool is free for unlimited use.
The defining trait is local processing: your files and text are handled on your own device, never uploaded to a server. That architecture makes the tools fast, private, and available offline after the page loads — and it is why 'free' here needs no asterisk.
Image tools: compress, convert, resize
The image trio covers the three most common image chores. Compress shrinks file sizes with a quality slider and PNG/JPG/WebP output — pick images and it processes automatically, showing original vs new size and savings per card, with single or ZIP download.
Convert changes formats between PNG, JPG, and WebP just as automatically; Resize changes dimensions by percentage or pixels with optional aspect-ratio lock. All three handle up to 20 images at once, recalculate instantly when you change options, and keep everything on your device.
PDF tools: merge and split
The PDF pair handles the two fundamental document operations. Merge combines multiple PDFs into one document — select files, arrange the order, merge, download — perfect for assembling reports, applications, and bundles from scattered sources.
Split divides one PDF into several separate files: chapters, per-recipient pages, or unscrambling a scanned stack. Both tools preserve content exactly, work with no size games or watermarks, and process everything locally in your browser.
Text tools: dedup, word count, Base64
The text trio serves writers, analysts, and developers. Dedup removes duplicate lines from any list in one step — paste, clean, copy. Word Count reports words and characters instantly for essays, posts, and limits.
Base64 encodes text into Base64 and decodes it back — the standard transformation developers use for data URIs, tokens, and safe text transport. Like everything here, it runs locally: your text never leaves the device.
Why it is all free and private
There is no catch because there is almost no cost to cover: browser-local tools need no processing servers, no storage, and no accounts to maintain. Your device does the work, so the service can be free forever without mining your data or gating features.
The whole site speaks 15 languages, works on desktop, tablet, and phone, and asks nothing of you. Bookmark the tools you use, and they are simply there — fast, private, and free, every time you need them.
That is the whole pitch: eight tools, zero cost, zero sign-up, zero uploads — everything handled on your device, every time you need it.
Frequently asked questions
Is CubTools really free?
Yes — all eight tools are completely free with no accounts, no watermarks, and no usage limits.
Are my files uploaded anywhere?
No. Every tool processes files and text locally in your browser; nothing ever leaves your device.
Which tools are included?
Three image tools (compress, convert, resize), two PDF tools (merge, split), and three text tools (dedup, word count, Base64).
Do I need to install anything?
No. Everything runs in any modern browser on desktop, tablet, or phone — just open the tool and use it.