The best free alternative to Sejda is Stirling PDF, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Sejda and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Sejda are PDFsam, PDF24 Creator, BentoPDF and Master PDF Editor.
Locally hosted web application offering an interactive GUI to merge, split, reorganize, convert, compress, watermark, secure, sign, flatten, repair, extract images, detect blanks, apply OCR, set permissions, and enable file processing or API integration for PDFs.
Free and open source desktop application to split, merge, extract pages, rotate and mix PDF files.
PDF24 Creator is free and feature-filled PDF creation, merging and conversion tool for Windows. Its unique feature among the free PDF printer tools is an editor, which allows to easily assemble, create and modify PDF files with Drag & Drop.
BentoPDF is a PDF Toolkit that works fully offline with no sign ups. It's fast, secure and forever free. In an era where data is a commodity, we take a different approach. All processing for BentoPDF tools happens locally in your browser.
Master PDF Editor is complete solution for editing PDF and XPS files. You can insert, edit, remove, copy, add images or graphics. Export, import, remove and change page layouts. Also Master PDF Editor provides full functionality for changing PDF information, including author...
Privacy-first PDF utility (Zero-Server Architecture). Merge, split, compress, and edit PDFs 100% locally on your device. No uploads, no servers, no tracking.
Breeze PDF is a powerful, free PDF editor that works entirely offline in your browser. No uploads, 100% privacy guaranteed.
Smallpdf is the first PDF Software you will actually like. The perfect gateway to productive, portable and cost-efficient document management solutions in your everyday life.
Free open-source web software for signing (alone or with others), organizing (merge, sort, rotate, delete, extract pages, ...), editing metadatas or compressing PDFs.
Comprehensive solution for editing, signing, form filling, OCR scanning, commenting, converting, and redacting PDFs, with AI-driven analysis and content extraction, data export to spreadsheets, text-to-speech, seamless use across desktop and mobile, and batch processing.
Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.
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PDFsam is available as a one-off payment (called PDFsam Viusual), in addition to various subscription models. Sejda does not offer such option, as far as I can see.