Every feature—editing, Request Sign, share links, folders, versions—is included on the free plan. When you outgrow 100 MB, a paid tier simply raises your quota; nothing is locked behind a higher plan.
£0/month
Full product access on our starter quota.
No card required. Create an account or try guest mode first.
£1.99/month
Same features as Free — you only upgrade storage to 10 GB.
£1.99 billed monthly for the extra space only. Subscribe from your account when checkout is live.
Adobe Acrobat DC is the long-standing standard for professional PDF work. OtterPDF is a lightweight browser workspace aimed at teams who want speed and simplicity—not a feature-for-feature clone.
OtterPDF
£0/month
Free — every feature, 100 MB. Plus — £1.99/mo for 10 GB (same features, more storage only).
Adobe Acrobat Pro (UK, list pricing)
from ~£13/month
Typical UK rates on Adobe’s site are often about £13/mo with an annual commitment (paid monthly, inc. VAT) or about £23/mo month-to-month—Adobe changes promos and plans, so verify on adobe.com/uk/acrobat/pricing.
| OtterPDF | Adobe Acrobat DC | |
|---|---|---|
| Typical cost | Free or £1.99/mo — £0 for 100 MB (full features) or £1.99/mo for 10 GB; you only pay for storage. | ~£13–£23/mo (UK) — Acrobat Pro list pricing: ~£13/mo on an annual plan (paid monthly, VAT incl.) or ~£23/mo month-to-month; team pricing differs. Confirm on adobe.com. |
| Install | Browser-only — no app download; runs in modern browsers. | Desktop + cloud — Acrobat desktop app; web and mobile in Adobe’s ecosystem. |
| Editing & tools | Everyday toolkit — annotate, redact, merge/split, reorder pages, sign in-editor, text search. | Pro-grade depth — broad toolset, prepress, and Acrobat-only advanced features. |
| Collect signatures | Request Sign — email signers, private links, flattened signed PDF when complete. | Adobe Sign + Acrobat — e-signatures and workflows; exact bundle depends on your plan. |
| Sharing | View-only links — optional read-only URLs for files in your library. | Cloud sharing — shared review and collaboration inside Adobe’s cloud. |
| Best when you… | Speed & simplicity — zero install, free tier plus cheap storage upgrade, fast daily PDF work. | Adobe standard — orgs on Acrobat, need maximum PDF depth or compliance tooling. |
Adobe, Acrobat, and Adobe Sign are trademarks of Adobe Inc. Pricing and product details for Adobe products are set by Adobe and change over time; check adobe.com for current terms.
No credit card to explore the editor, Request Sign, and organization tools on Free—move up to 10 GB for £1.99/month on Plus when you’re ready.