Choose Okular if you want
Free annotation and signing on Linux.
A free, open-source viewer with annotation and signature checks on Linux, Windows, macOS and Android. It is mainly a viewer, so text and page editing are limited compared with the editors above.
Choose Sejda if you want
Occasional PDF tasks with a desktop option.
Online and desktop PDF tools with a forever free tier that covers merging, splitting, compressing and cropping. Free use has limits, so regular users will need a paid plan.
The main differences
- Only Okular runs on Android.
- Only Sejda runs on Web.
- Okular is open source; Sejda is not.
Side by side
 Okular |  Sejda | |
|---|---|---|
| Score | 79.5 | 85.0 |
| Rank in list | #6 of 7 | #5 of 7 |
| Price | Free and open sourceFree software under GPLv2 or later | Free plan, paid upgradesForever free with limited usage and features; paid plans for more |
| Free to use | Yes | Yes |
| Open source | Yes | No |
| Platforms | LinuxWindowsmacOSAndroidLinux, Windows, macOS, Android | WebWindowsmacOSLinuxWeb, Windows, macOS, Linux |
| Made by | KDE | Not stated |
| Free plan | Free | Forever free, limited use |
| Pricing model | Open source | Freemium |
| Best for | Free annotation and signing on Linux | Occasional PDF tasks with a desktop option |
| Strengths |
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| Limits |
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| Links | Visit site | Visit site |
Questions about Okular vs Sejda
- Is Sejda better than Okular?
- Sejda ranks higher in our list of PDF editors (#5 against #6, score 85.0 against 79.5). Okular is best for: free annotation and signing on Linux. Sejda is best for: occasional PDF tasks with a desktop option.
- Which is cheaper, Okular or Sejda?
- Okular: Free software under GPLv2 or later. Sejda: Forever free with limited usage and features; paid plans for more.
- Do Okular and Sejda run on the same platforms?
- Okular supports Linux, Windows, macOS, Android. Sejda supports Web, Windows, macOS, Linux.