One upload. Every tool.
A PDF workspace that runs in your browser. Drop a file once, switch tools, and keep your files on your device. No account required.
Why RatioAI.
Three things most online PDF tools get wrong — and what we do instead.
Your files never leave your device
Every browser tool runs locally on your machine. There's no upload, so there's nothing for anyone — including us — to store, scan, or leak. The server is an optional escape hatch you choose.
Drop a file once, use every tool
Compress it, sign it, split it, add a watermark, convert it — all on the same document without re-uploading between steps. Close the tab and your work is still here tomorrow.
Fast, even on big documents
Tools run in the background so the page never freezes — no spinner between every step, no “please re-upload to continue.” Even a long, image-heavy PDF stays smooth.
Where your file goes.
Most tools quietly upload. We picked the harder engineering path so you don't have to take our word for it.
Other PDF tools
Your file makes a round trip every operation.
- Every tool re-uploads the file.
- Privacy policies you have to take their word on.
- Daily limits push you to a paid plan.
RatioAI
Browser tools keep your file on your device.
- Browser-only by default — files never leave the tab.
- Browser tools work immediately without an account.
- No daily caps, no nag, no "upgrade" paywall on the free tier.
How it works.
Start with free browser tools. Advanced server tools require a separately configured backend.
The default for almost everything.
- Everything happens inside your browser tab
- Your file and its history stay on your device
- Up to 1 GB per file, free
- No upload, no waiting on a server
Unavailable in the guest workspace.
- Designed for OCR, Office conversions, and very large files
- Requires an authorized backend session
- Availability depends on the deployment
- Browser tools remain available without an account
Every tool, one tab.
Switch tools without re-uploading. The file stays put.
Organize
Combine multiple PDFs into one
Split into ranges or single pages
Reorder, rotate, delete pages
Delete unwanted pages
Pull pages into a new PDF
Rotate pages 90/180/270°
Detect duplicate pages by content
Fix corrupted PDFs
Optimize
Edit
Security
Convert
Each page as image
Each page as PNG
Combine images to PDF
JPG, PNG, WEBP, BMP, GIF
Camera capture to PDF
.doc, .docx → PDF
.ppt, .pptx → PDF
.xls, .xlsx → PDF
PDF → editable .docx
PDF → .pptx
Tables → .xlsx
Paste HTML or upload an HTML file
Make scanned PDFs searchable
AI
TL;DR any PDF
Ask questions about your PDF
Split by chapter, topic, or invoice
Translate PDF text
How we compare.
A plain look at how a browser-first workspace differs from the usual upload-and-wait PDF site.
| What matters | RatioAI | Typical online PDF tool |
|---|---|---|
Your file stays on your device Browser tools process the PDF locally — nothing is uploaded. | Yes | Uploaded to their servers |
No account needed to start Open a browser tool and start working immediately. | Yes | Sign-up often required |
No daily limits on free tools Run as many merges, splits, and compressions as you like. | Yes | Capped per day |
Switch tools without re-uploading Drop a file once; compress, sign, split, and more in one place. | Yes | Re-upload per tool |
Undo history kept per file Step back through earlier versions any time. | Yes | Rarely offered |
Keeps working offline after first load Browser tools run without a connection once the page is loaded. | Yes | Needs a connection |
No watermarks on the free tier Outputs are clean — no badge stamped on your document. | Yes | Sometimes added |
A general comparison with how most browser-based PDF services work today. Specific features vary by provider and plan — this reflects the common free-tier experience, not any one product.
Common questions.
Answers to the things people ask before getting started.
Drop a PDF. Try the workspace.
No signup. No upload. Reload the tab tomorrow and pick up where you left off.