PDF tools are compared on whether the file survives the round trip. A converter that reflows a table column is worse than no tool at all, so output fidelity outranks feature count here, and the size of the free tier decides the order below the top two.
Details and plans checked 2026-11-13 · refreshed weekly · no paid placement
#1
iLovePDF
Every task is visible on one page — no hunting through menus
The suite most people land on first, and for good reason: every task sits one click away on a single page, and small jobs do not demand an account. The thing to watch is pricing — the official page shows local currency, so the number you see is not the number someone in another country sees. Compare it in your own currency before deciding it is cheaper than Smallpdf.
2Stirling PDFDocuments never leave infrastructure you control88
3SmallpdfNothing else in this category covers as many operations in one interface87
4Adobe AcrobatHandles documents other tools quietly mangle85
5SejdaWeek pass is the only pay-per-project option among the major suites85
6PDF24No account, no watermark, no daily limit on the online tools84
7 P PDFgearFull editing and OCR at no cost, on desktop and mobile82
8Foxit PDF EditorPerpetual licensing, which Adobe does not offer for Acrobat81
What each one costs
Free means the tool can be used without paying. Where a paid price is missing the official page did not publish a fixed number — check it there rather than trusting a comparison table.
PDF24 and PDFgear are free end to end, with no account and no per-day counter. Stirling PDF is free if you host it yourself. Smallpdf and iLovePDF both cap downloads on the free tier.
Do these tools upload my documents?
Most of them do — the browser tools send the file to a server and return the result. The exceptions are Stirling PDF, the PDF24 and Sejda desktop apps, and the free tools on this site, which merge files inside the tab.
How this ranking is built
Six dimensions with fixed maximums, adding up to 100. The weights do not change between tools, so two listings are directly comparable. A dimension with no reliable data is dropped from the total rather than filled with a default.
Ranking order is score first, then name. It is not influenced by partnership or referral terms. See the full cross-category ranking, or browse the PDF Tools directory with filters and task lists.
