Documents done right. No friction.

Simple PDF & image tools that just work

Merge PDFs, compress PDF, convert images to PDF, and optimize images — free, fast, and privacy-first.

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No sign-up required
Files processed locally
Instant download
GDPR-friendly
dokzen is a privacy-first collection of free PDF and image tools that run directly in your browser. Merge PDFs, compress PDF files, convert images to PDF, and optimize images without uploading your documents to a server for core tools. No account required and downloads are instant. You can control analytics and ads in Cookie settings.

How it works

Pick a tool

Choose Merge, Compress, or Image → PDF.

Drop your files

Processing happens locally in your browser by default.

Download

Get the result instantly — no sign-up required.

PDF tools

Merge PDFs

Combine multiple PDFs into one file. Processing happens in your browser.

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Compress PDF

Reduce file size when possible. If it can’t shrink safely, it keeps quality.

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Image → PDF

Turn PNG/JPG images into a clean PDF—useful for scans and documents.

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Image tools

Compress images

Reduce JPG/PNG/WebP size locally in your browser. Batch support and ZIP download.

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Resize / crop

Resize, crop, pad backgrounds, and export for web/social presets.

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Remove background

Cut out a subject and export transparent PNGs. Best for clean, solid backgrounds.

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Resources

SEO blog

Practical guidance on documents and PDF basics.

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Works without sign-up
Tools run in your browser. If our backend is unavailable, core features still work. When available, it only adds anonymous usage tracking and payment verification.

FAQ

Are my files uploaded or stored?
By default, dokzen processes files locally in your browser. Your files are not uploaded for core tools, and we don’t store your documents.
How does local processing work?
The tools run with JavaScript in your browser. Your files stay on your device while the tool reads, processes, and generates the output for download.
Is dokzen free to use?
Yes. The tools work without sign-up. Core features are free to use.
Can I use dokzen for sensitive documents?
Yes — local processing is specifically useful for private documents (contracts, IDs, invoices, medical paperwork) because files don’t need to be uploaded for core tools.
Which tools do you offer?
PDF: merge PDFs, compress PDF, and image → PDF. Images: compress images, resize/crop, and remove background.
What browsers are supported?
dokzen works on modern Chrome, Edge, Firefox, and Safari (desktop and mobile). Very old browsers may not support required file APIs.
Is there a file size limit?
There’s no fixed server limit for local tools, but your browser/device has memory limits. Very large scanned PDFs may need to be split or compressed in smaller batches.
Do you use cookies?
We use essential storage for security and stability. Analytics and ads can be enabled or disabled in Cookie settings.