Free Online Tools, Right in Your Browser
Merge PDFs, compress images, count words and more — everything runs locally on your device. Your files never leave your browser. No watermark, no sign-up, no cost.
Merge PDF
Combine multiple PDF files into one document, reorder pages freely.
PDFSplit PDF
Extract selected pages or page ranges from a PDF into a new file.
PDFCompress Image
Shrink JPG, PNG and WebP file size with adjustable quality.
ImageConvert Image
Convert images between PNG, JPG and WebP formats instantly.
ImageResize Image
Resize images by width, height or percentage, keep aspect ratio.
ImageDedup & Sort Text
Remove duplicate lines, sort lines, strip empty lines from text.
TextWord Counter
Count characters, Chinese characters, English words and paragraphs live.
TextBase64 Encode / Decode
Encode text to Base64 or decode Base64 back to text, Unicode-safe.
TextPrivate by design
Files never leave your device.
Instant & free
No watermark, no sign-up, no waiting.
Works everywhere
Phone, tablet or desktop — any modern browser.
Why CubTools?
Private by design. Every tool on this page runs with JavaScript inside your own browser. Unlike many online tools, we never upload your files to a server — your documents and photos stay on your device.
Free without limits games. No watermarks stamped on your files, no account required, no daily quotas on basic use.
Frequently Asked Questions
Are these tools really free?
Yes. All 8 tools are free to use, with no watermark added to your output files.
Do my files get uploaded to your server?
No. Processing happens locally in your browser via JavaScript. You can even disconnect from the internet after the page loads (except the first load of the PDF library from CDN) and the tools still work.
Which browsers are supported?
Any modern browser: Chrome, Edge, Firefox and Safari, on desktop or mobile.