KillerPDF vs LightPDF
KillerPDF
killerpdf.net
LightPDF
lightpdf.comSide by side
| Figure | KillerPDF | LightPDF |
|---|---|---|
| Price from | Free | $1.33/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 5 |
| Spec score · PDF editors | 7.8 (#58) | 9.2 (#6) |
| Free plan | Yes | Yes |
| Integrations | The app supports signing with a Certum SimplySign cloud certificate. | LightPDF's MCP documentation says its server can be configured in MCP-compatible clients such as Cursor and Claude. |
| PDF tools | Features include inline text editing, annotations, form filling, signatures, page merging and splitting, comparison, printing and flattening. | Its web guide says the AI Agent can perform PDF tasks such as conversion, merging, watermark removal, page numbering, and compression through chat. |
| Support | The maker directs users to a public GitHub issues page to request features or report bugs. | The pricing page says users can contact live chat or submit a support ticket and receive a response within 24 hours. |
Plans
LightPDF
- Free PlanFree
- Monthly Plan$5.99 a month
- Yearly Plan$15.99 a year
- Lifetime Plan$39.99 a month
- Lifetime Plan$39.99, paid once
In their own words
LightPDF
LightPDF is an AI-powered PDF service for editing, converting, annotating, signing, organizing, and chatting with documents. Its AI Agent accepts chat requests for tasks such as merging, conversion, watermark removal, page numbering, and compression. Other listed AI features include translation, image processing, data extraction, invoice generation, and document enhancement. LightPDF offers a conversion API for PDFs and office documents, including Word, Excel, PowerPoint, images, HTML, and text. It is available on the web, Android, iOS, macOS, and Windows, with a Chrome/Edge extension. The free plan is web-only, limits files to 10MB, includes five cloud files for one year, and allows three AI Agent questions per day. Monthly and yearly plans include 1,000 AI credits per month; the lifetime plan includes 40,000 credits valid until used. Monthly costs $5.99 a month, Yearly costs $15.99 a year and includes a 3-day free trial, and Lifetime costs $39.99 a month. Premium features can be used on one device at a time.