Every format.
One free toolbox.
PDF, Word, Excel, PowerPoint and images: convert, merge, compress, sign and edit without uploading anything. Your files never leave your device.
- Files never leave your device
- 44+ tools, 20+ formats
- Works on any device
Three steps, no account
Upload
Drop the document or image you want to work on.
Adjust
Pick the output format or tweak the options to your needs.
Download
Save the finished file. It was processed right on your device.
Choose the best tool for the job
Every tool is free, works in your browser and never uploads your files.
No tool matches your search.
Why people switch to Best-Converter
Same tools you expect from paid PDF sites, without the paywall and without uploading your files.
Built for people who just need the file done
Private by design
Files are processed on your device with modern browser technology. Nothing is uploaded, stored or shared.
Fast
No upload queue and no waiting for a server. Most conversions finish in seconds.
Works everywhere
Desktop, tablet or phone. Any modern browser, no installation and no account.
Easy to use
Drop a file, pick an option and download. That is the whole workflow.
Your files stay with you
Most online converters upload your documents to a server. Best-Converter does the work inside your browser using WebAssembly and modern web APIs, so a contract, an ID scan or a payslip never leaves your computer.
- No upload, no storage, no sharing
- Works offline once the page has loaded
- No file size limit from our side
From a scan on your phone to a signed PDF in a minute
- Convert PDFs to editable Word, Excel and PowerPoint
- Merge, split, rotate, crop and compress PDFs
- Sign documents by drawing or typing your name
- Read text from scans and photos with OCR
- Shrink and convert images for the web
Frequently asked questions
Is Best-Converter really free?
Yes. Every tool on the site is free to use, with no account and no watermark. We may add optional paid plans with extra features later, but the core tools will stay free.
Do I need to install anything?
No. Best-Converter runs entirely in your web browser on Windows, macOS, Linux, Android and iOS.
Are my files safe?
Your files are processed on your own device. They are never uploaded to our servers, so nothing can leak, be stored or be shared.
Is there a file size limit?
Files are processed locally, so the limit depends on your device. Most documents up to a few hundred megabytes convert without any trouble.
Which formats are supported?
PDF, Word (DOCX), Excel (XLSX, CSV), PowerPoint (PPTX), RTF, EPUB, TXT and the JPG, PNG and WEBP image formats. More formats are on the way.
Can I use it on my phone?
Yes. The site is fully responsive and every tool works on mobile browsers.
How do I report a problem?
Write to support@best-converter.online and tell us which tool and file type gave you trouble. We answer every message.