blupdf vs Smallpdf
Smallpdf is a broad browser suite - 30+ tools for compressing, converting, merging, signing and editing PDFs, with mobile and Windows apps. blupdf is built around one job: click any text in a PDF or scan, retype it or tell blupdf AI what to change, and download it in the original or a matched font. This comparison sets the two side by side using Smallpdf's own published statements.
Try blupdf freeSide by side
| Feature | blupdf | Smallpdf |
|---|---|---|
| Runs in the browser, no install | Yes | Browser + mobile and Windows apps |
| Edit existing text in the original font on digital PDFs | Yes, on the free tier too | Pro subscription required (free: add text and annotations) |
| Edit scanned PDFs (recognised and rebuilt as real text) | Yes | OCR tool converts scans to editable text |
| Font matching when a font is missing | Closest of 35 library families, automatic | Not documented |
| Describe a change and the AI makes it in place | blupdf AI, totals recomputed | Not documented; AI PDF Assistant chats |
| Change every occurrence in one request | One request to blupdf AI | Not documented |
| Ask questions about the open document | Yes | AI PDF Assistant / Chat with PDF |
| Write a new document from a description | Create with AI | Not documented |
| Pricing model | Credits: 1,000 free, then from $39/month | Free plan with limited downloads; Pro subscription (see smallpdf.com/pricing) |
| Free tier | 1,000 credits, no card required, no expiry | Free plan; 7-day Pro trial, then automatic downgrade to free |
Verdict
Choose Smallpdf when you want many light PDF utilities - compress, convert, merge, sign, organize - under one account, on desktop and mobile. Choose blupdf when the task is changing text so that the result looks untouched: it edits digital and scanned PDFs in the same flow, matches fonts automatically, makes the change for you when you describe it to blupdf AI, and charges credits for what you actually do rather than a per-user subscription. Editing existing text is free to try in blupdf; in Smallpdf it needs Pro.
Frequently asked questions
Comparison verified on 2026-08-27. Sources: smallpdf.com. Smallpdf is a trademark of its owner; blupdf is not affiliated.
Start editing PDFs the easy way
1,000 free credits on signup. No card required.