Onix PDF vs Surfer
Neck and neck on boosts. Profiles, pricing and deals below.
Onix PDF
Free Online PDF Tools: Convert, Compress, Merge
community boosts
⚡ 0
pricing
Freemium
what it is
Free online PDF tools: PDF/A conversion (ISO 19005), compression, merge, redaction (GDPR), CAdES/PAdES digital signature verification (eIDAS). No sign-up required.
Surfer
Content optimization scored against the live SERP
community boosts
⚡ 0
pricing
Paid
what it is
Surfer analyzes what already ranks and turns it into a live content score as you write - terms, structure, length. It made on-page optimization measurable. Popular with content teams scaling SEO articles.