JustPDF is a free, browser-based PDF toolkit that processes 17 different PDF operations entirely on the user’s device — no files ever leave the browser.
What is JustPDF?
JustPDF is a privacy-first PDF utility that runs 17 tools — merging, splitting, compressing, converting, signing, OCR, and AI chat — using only JavaScript and WebAssembly inside the browser. Input is any PDF (or image/Word file for conversion) and output is a processed file that downloads directly, with no server intermediate. The service is built and maintained by JustPDF and requires no account for the free tier.
Key Features
- Local processing — All operations happen in the browser; files never upload to any server. Verifiable by checking the Network tab in DevTools.
- 17 tools included — Merge, Split, Compress, Rotate, Flatten, Unlock, PDF to Word/Excel/JPG/Grayscale, Word/JPG/WebP/HEIC to PDF, Sign, Chat with PDF (AI), and OCR/Scan.
- Free tier with 3 operations per day — No account, no watermarks, no signup required. Unlimited use starts at $4/month (JustPDF Pro).
- Works offline — After the page loads, the tools continue functioning without an internet connection.
- No file size limits — Because processing is local, there is no queue or upload cap; most operations finish in seconds.
- FERPA compliant — Local processing makes the tool suitable for educational records and other sensitive documents.
Who is it for?
- Privacy-conscious professionals — Lawyers, accountants, or HR staff handling contracts, tax forms, or medical records that must never be exposed to third-party servers.
- Students and educators — Combine lecture slides, compress assignment PDFs, or OCR scanned notes without uploading student data to the cloud.
- Remote workers — Use offline when traveling or in low-connectivity environments; the tools load once and keep working without internet.
What can you do with JustPDF?
- Compress a large PDF — Drag a multi-megabyte file into the compressor and get a smaller version suitable for email, with no quality loss.
- Convert a scanned document to text — Use the OCR tool to make searchable, selectable text from a scanned image PDF.
- Chat with a contract — Upload a legal PDF to the Chat with PDF tool and ask questions like “What is the termination clause?” — the AI reads the local file.
How does it work?
- Open any tool on the JustPDF website.
- Drag and drop (or click to browse) a file — the page loads the PDF into the browser’s memory.
- Processing happens instantly on your device; the result appears as a download link. No buttons to wait on or progress bars for upload.
Pricing
JustPDF is freemium. The free tier allows 3 operations per day with no watermarks and no account. JustPDF Pro removes the daily limit for $4/month.
FAQ
Is JustPDF really free?
Yes, every tool is free to use up to 3 times per day. No watermarks are added. You do not need an account unless you want unlimited daily use (Pro at $4/month).
Do my files get uploaded to a server?
No. All processing runs in your browser using JavaScript and WebAssembly. You can confirm this by opening your browser’s Network tab while using any tool — no file data is sent to any server.
Does JustPDF work offline?
Yes. Once the page loads, you can disconnect from the internet and the tools continue to work because every operation is local.
How does JustPDF compare to Smallpdf or iLovePDF?
JustPDF keeps files on your device, whereas Smallpdf and iLovePDF upload them to remote servers. JustPDF costs less for unlimited use and works offline.
